./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-12 00:08:50,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:08:50,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:08:50,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:08:50,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:08:50,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:08:50,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:08:50,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:08:50,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:08:50,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:08:50,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:08:50,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:08:50,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:08:50,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:08:50,299 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:08:50,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:08:50,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:08:50,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:08:50,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:08:50,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:08:50,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:08:50,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:08:50,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:08:50,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:08:50,308 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:08:50,308 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:08:50,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:08:50,309 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:08:50,309 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:08:50,309 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:08:50,310 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:08:50,310 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:08:50,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:08:50,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:08:50,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:50,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:08:50,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:08:50,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:08:50,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:08:50,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:08:50,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:08:50,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:08:50,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:08:50,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:08:50,326 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-10-12 00:08:50,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:08:50,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:08:50,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:08:50,632 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:08:50,632 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:08:50,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-12 00:08:52,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:08:52,395 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:08:52,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-12 00:08:52,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/40aaed7ac/f01b4f265c974aa7915269a99a9e8572/FLAG2bdff73f8 [2024-10-12 00:08:52,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/40aaed7ac/f01b4f265c974aa7915269a99a9e8572 [2024-10-12 00:08:52,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:08:52,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:08:52,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:52,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:08:52,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:08:52,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3259ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52, skipping insertion in model container [2024-10-12 00:08:52,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:08:52,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:52,695 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:08:52,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:52,736 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:08:52,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52 WrapperNode [2024-10-12 00:08:52,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:52,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:52,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:08:52,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:08:52,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,774 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 133 [2024-10-12 00:08:52,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:52,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:08:52,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:08:52,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:08:52,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,816 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]. [2024-10-12 00:08:52,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:08:52,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:08:52,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:08:52,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:08:52,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (1/1) ... [2024-10-12 00:08:52,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:52,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:08:52,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:08:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:08:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:08:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:08:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:08:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:08:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:08:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:08:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:08:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:08:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:08:52,940 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:08:53,062 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:08:53,065 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:08:53,292 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:08:53,293 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:08:53,534 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:08:53,535 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:08:53,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:53 BoogieIcfgContainer [2024-10-12 00:08:53,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:08:53,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:08:53,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:08:53,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:08:53,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:08:52" (1/3) ... [2024-10-12 00:08:53,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af022a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:53, skipping insertion in model container [2024-10-12 00:08:53,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:52" (2/3) ... [2024-10-12 00:08:53,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af022a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:53, skipping insertion in model container [2024-10-12 00:08:53,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:53" (3/3) ... [2024-10-12 00:08:53,552 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-10-12 00:08:53,574 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:08:53,574 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-12 00:08:53,575 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:08:53,630 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:08:53,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow [2024-10-12 00:08:53,697 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-12 00:08:53,697 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:08:53,701 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. [2024-10-12 00:08:53,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow [2024-10-12 00:08:53,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow [2024-10-12 00:08:53,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:08:53,723 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;@6d9d54db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:08:53,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-12 00:08:53,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:08:53,728 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:08:53,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:08:53,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:53,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:08:53,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:53,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash 410261, now seen corresponding path program 1 times [2024-10-12 00:08:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628052305] [2024-10-12 00:08:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628052305] [2024-10-12 00:08:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628052305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126137929] [2024-10-12 00:08:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:54,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:54,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-12 00:08:54,123 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) [2024-10-12 00:08:54,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:54,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-12 00:08:54,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:54,389 INFO L124 PetriNetUnfolderBase]: 165/293 cut-off events. [2024-10-12 00:08:54,389 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-12 00:08:54,393 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. [2024-10-12 00:08:54,400 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-10-12 00:08:54,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 119 flow [2024-10-12 00:08:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-10-12 00:08:54,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-10-12 00:08:54,416 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 52 transitions. [2024-10-12 00:08:54,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 119 flow [2024-10-12 00:08:54,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:54,422 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 85 flow [2024-10-12 00:08:54,424 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} [2024-10-12 00:08:54,433 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-10-12 00:08:54,433 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 85 flow [2024-10-12 00:08:54,434 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) [2024-10-12 00:08:54,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:54,434 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:08:54,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:08:54,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:54,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash -662433084, now seen corresponding path program 1 times [2024-10-12 00:08:54,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:54,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420261415] [2024-10-12 00:08:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:54,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420261415] [2024-10-12 00:08:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420261415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571201771] [2024-10-12 00:08:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:54,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:54,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:54,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:08:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:54,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:54,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:54,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:54,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571201771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:54,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:54,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:08:54,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333927605] [2024-10-12 00:08:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:54,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:08:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:08:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:08:54,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-12 00:08:54,876 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) [2024-10-12 00:08:54,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:54,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-12 00:08:54,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:55,036 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-10-12 00:08:55,037 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-12 00:08:55,038 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. [2024-10-12 00:08:55,040 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2024-10-12 00:08:55,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 131 flow [2024-10-12 00:08:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:08:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:08:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-10-12 00:08:55,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2024-10-12 00:08:55,043 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 85 flow. Second operand 6 states and 56 transitions. [2024-10-12 00:08:55,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 131 flow [2024-10-12 00:08:55,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:55,049 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 92 flow [2024-10-12 00:08:55,049 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} [2024-10-12 00:08:55,050 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-10-12 00:08:55,050 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 92 flow [2024-10-12 00:08:55,051 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) [2024-10-12 00:08:55,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:55,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:55,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:08:55,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:55,257 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:55,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 993006643, now seen corresponding path program 1 times [2024-10-12 00:08:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077348004] [2024-10-12 00:08:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:55,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:55,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077348004] [2024-10-12 00:08:55,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077348004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:55,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:55,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727943306] [2024-10-12 00:08:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:55,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:55,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:55,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:55,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-12 00:08:55,432 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) [2024-10-12 00:08:55,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:55,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-12 00:08:55,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:55,579 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-10-12 00:08:55,580 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-12 00:08:55,581 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. [2024-10-12 00:08:55,585 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 2 changer transitions 14/41 dead transitions. [2024-10-12 00:08:55,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 196 flow [2024-10-12 00:08:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-12 00:08:55,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-10-12 00:08:55,588 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 92 flow. Second operand 4 states and 69 transitions. [2024-10-12 00:08:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 196 flow [2024-10-12 00:08:55,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 174 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-12 00:08:55,593 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 80 flow [2024-10-12 00:08:55,593 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} [2024-10-12 00:08:55,594 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-10-12 00:08:55,594 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 80 flow [2024-10-12 00:08:55,594 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) [2024-10-12 00:08:55,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:55,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:08:55,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:08:55,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:55,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash 939411262, now seen corresponding path program 1 times [2024-10-12 00:08:55,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:55,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151627497] [2024-10-12 00:08:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151627497] [2024-10-12 00:08:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151627497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:55,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984690178] [2024-10-12 00:08:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:55,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:55,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:08:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:55,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:55,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:55,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984690178] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:55,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:55,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:08:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712521589] [2024-10-12 00:08:55,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:55,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:08:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:08:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:08:55,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-12 00:08:55,899 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) [2024-10-12 00:08:55,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:55,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-12 00:08:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:56,056 INFO L124 PetriNetUnfolderBase]: 167/303 cut-off events. [2024-10-12 00:08:56,056 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-12 00:08:56,059 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. [2024-10-12 00:08:56,063 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 21 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2024-10-12 00:08:56,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 176 flow [2024-10-12 00:08:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-10-12 00:08:56,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2529411764705882 [2024-10-12 00:08:56,065 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 80 flow. Second operand 10 states and 86 transitions. [2024-10-12 00:08:56,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 176 flow [2024-10-12 00:08:56,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:56,067 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 148 flow [2024-10-12 00:08:56,067 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} [2024-10-12 00:08:56,070 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-10-12 00:08:56,071 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 148 flow [2024-10-12 00:08:56,071 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) [2024-10-12 00:08:56,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:56,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:56,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:56,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:56,272 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:56,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 47985890, now seen corresponding path program 1 times [2024-10-12 00:08:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168393183] [2024-10-12 00:08:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:56,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:56,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168393183] [2024-10-12 00:08:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168393183] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834293377] [2024-10-12 00:08:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:56,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:56,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:56,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:08:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:56,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:56,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:56,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834293377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:56,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-12 00:08:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933765986] [2024-10-12 00:08:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:56,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:08:56,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-12 00:08:56,563 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) [2024-10-12 00:08:56,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:56,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-12 00:08:56,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:56,623 INFO L124 PetriNetUnfolderBase]: 125/232 cut-off events. [2024-10-12 00:08:56,624 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-12 00:08:56,624 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. [2024-10-12 00:08:56,625 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 10 selfloop transitions, 1 changer transitions 21/34 dead transitions. [2024-10-12 00:08:56,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 200 flow [2024-10-12 00:08:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-12 00:08:56,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-10-12 00:08:56,627 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 148 flow. Second operand 3 states and 42 transitions. [2024-10-12 00:08:56,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 200 flow [2024-10-12 00:08:56,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 190 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:56,632 INFO L231 Difference]: Finished difference. Result has 41 places, 13 transitions, 74 flow [2024-10-12 00:08:56,632 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} [2024-10-12 00:08:56,633 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-10-12 00:08:56,633 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 13 transitions, 74 flow [2024-10-12 00:08:56,633 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) [2024-10-12 00:08:56,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:56,633 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:08:56,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:56,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:56,835 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-12 00:08:56,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1590720077, now seen corresponding path program 2 times [2024-10-12 00:08:56,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275710835] [2024-10-12 00:08:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275710835] [2024-10-12 00:08:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275710835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144440964] [2024-10-12 00:08:57,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:57,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:57,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:57,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:08:57,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:57,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:57,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:57,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:57,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144440964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:57,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:08:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950099956] [2024-10-12 00:08:57,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:57,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:08:57,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:08:57,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:08:57,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-12 00:08:57,247 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) [2024-10-12 00:08:57,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:57,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-12 00:08:57,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:57,379 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-12 00:08:57,379 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-12 00:08:57,379 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. [2024-10-12 00:08:57,379 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2024-10-12 00:08:57,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 14 transitions, 102 flow [2024-10-12 00:08:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:08:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:08:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 85 transitions. [2024-10-12 00:08:57,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.17857142857142858 [2024-10-12 00:08:57,381 INFO L175 Difference]: Start difference. First operand has 41 places, 13 transitions, 74 flow. Second operand 14 states and 85 transitions. [2024-10-12 00:08:57,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 14 transitions, 102 flow [2024-10-12 00:08:57,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 89 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-12 00:08:57,382 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-10-12 00:08:57,382 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} [2024-10-12 00:08:57,383 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-10-12 00:08:57,383 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-10-12 00:08:57,383 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) [2024-10-12 00:08:57,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-10-12 00:08:57,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-10-12 00:08:57,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-10-12 00:08:57,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-10-12 00:08:57,388 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-10-12 00:08:57,388 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-10-12 00:08:57,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:57,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 00:08:57,589 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-10-12 00:08:57,595 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-12 00:08:57,595 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 00:08:57,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 12:08:57 BasicIcfg [2024-10-12 00:08:57,601 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 00:08:57,602 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:08:57,602 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:08:57,602 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:08:57,602 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:53" (3/4) ... [2024-10-12 00:08:57,604 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 00:08:57,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-12 00:08:57,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-12 00:08:57,611 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2024-10-12 00:08:57,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-12 00:08:57,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-12 00:08:57,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-12 00:08:57,699 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 00:08:57,699 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 00:08:57,700 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:08:57,700 INFO L158 Benchmark]: Toolchain (without parser) took 5279.62ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 112.4MB in the beginning and 97.8MB in the end (delta: 14.7MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,701 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 146.8MB. Free memory was 116.9MB in the beginning and 116.8MB in the end (delta: 105.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:08:57,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.29ms. Allocated memory is still 146.8MB. Free memory was 111.8MB in the beginning and 99.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.26ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,701 INFO L158 Benchmark]: Boogie Preprocessor took 60.48ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,702 INFO L158 Benchmark]: RCFGBuilder took 694.87ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 85.8MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,702 INFO L158 Benchmark]: TraceAbstraction took 4063.40ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 85.8MB in the beginning and 103.0MB in the end (delta: -17.2MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,702 INFO L158 Benchmark]: Witness Printer took 98.08ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 97.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 00:08:57,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 146.8MB. Free memory was 116.9MB in the beginning and 116.8MB in the end (delta: 105.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.29ms. Allocated memory is still 146.8MB. Free memory was 111.8MB in the beginning and 99.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.26ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.48ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 694.87ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 85.8MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4063.40ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 85.8MB in the beginning and 103.0MB in the end (delta: -17.2MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 98.08ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 97.8MB in the end (delta: 5.2MB). 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: 3.9s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.5s 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, 1.2s 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! [2024-10-12 00:08:57,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE