./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:54:27,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:54:27,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:54:27,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:54:27,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:54:27,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:54:27,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:54:27,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:54:27,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:54:27,229 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:54:27,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:54:27,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:54:27,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:54:27,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:54:27,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:54:27,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:54:27,232 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:54:27,232 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:27,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:27,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:54:27,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:54:27,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:54:27,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:54:27,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:54:27,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:54:27,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2025-01-10 06:54:27,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:54:27,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:54:27,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:54:27,542 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:54:27,543 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:54:27,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-01-10 06:54:28,760 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50fe2209f/2ed2eae18ca343cdb58026d28376514b/FLAG33799fc11 [2025-01-10 06:54:29,090 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:54:29,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-01-10 06:54:29,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50fe2209f/2ed2eae18ca343cdb58026d28376514b/FLAG33799fc11 [2025-01-10 06:54:29,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50fe2209f/2ed2eae18ca343cdb58026d28376514b [2025-01-10 06:54:29,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:54:29,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:54:29,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:29,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:54:29,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:54:29,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d336c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29, skipping insertion in model container [2025-01-10 06:54:29,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:54:29,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:29,569 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:54:29,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:29,616 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:54:29,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29 WrapperNode [2025-01-10 06:54:29,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:29,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:29,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:54:29,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:54:29,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,656 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 326 [2025-01-10 06:54:29,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:29,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:54:29,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:54:29,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:54:29,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,681 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-10 06:54:29,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:54:29,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:54:29,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:54:29,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:54:29,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (1/1) ... [2025-01-10 06:54:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:29,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:54:29,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:54:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:54:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:54:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:54:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:54:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:54:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:54:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:54:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 06:54:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:54:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:54:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:54:29,744 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:54:29,817 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:54:29,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:54:30,224 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:54:30,225 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:54:30,686 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:54:30,686 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:54:30,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:30 BoogieIcfgContainer [2025-01-10 06:54:30,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:54:30,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:54:30,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:54:30,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:54:30,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:54:29" (1/3) ... [2025-01-10 06:54:30,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f94aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:30, skipping insertion in model container [2025-01-10 06:54:30,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:29" (2/3) ... [2025-01-10 06:54:30,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f94aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:30, skipping insertion in model container [2025-01-10 06:54:30,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:30" (3/3) ... [2025-01-10 06:54:30,694 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2025-01-10 06:54:30,705 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:54:30,706 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-01-10 06:54:30,706 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:54:30,920 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 06:54:30,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2025-01-10 06:54:31,017 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2025-01-10 06:54:31,019 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 06:54:31,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 281 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-01-10 06:54:31,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2025-01-10 06:54:31,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2025-01-10 06:54:31,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:54:31,053 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;@54ee4af3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:54:31,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-01-10 06:54:31,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:54:31,057 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:54:31,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:54:31,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:31,057 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:54:31,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:54:31,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1022102, now seen corresponding path program 1 times [2025-01-10 06:54:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165869766] [2025-01-10 06:54:31,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:31,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:54:31,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:54:31,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:31,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:31,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165869766] [2025-01-10 06:54:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165869766] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:31,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:31,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:54:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462423538] [2025-01-10 06:54:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:31,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:31,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:31,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:54:31,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-01-10 06:54:31,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:31,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:54:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:37,189 INFO L124 PetriNetUnfolderBase]: 50181/65629 cut-off events. [2025-01-10 06:54:37,190 INFO L125 PetriNetUnfolderBase]: For 1120/1120 co-relation queries the response was YES. [2025-01-10 06:54:37,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129918 conditions, 65629 events. 50181/65629 cut-off events. For 1120/1120 co-relation queries the response was YES. Maximal size of possible extension queue 6911. Compared 464128 event pairs, 36482 based on Foata normal form. 2/26885 useless extension candidates. Maximal degree in co-relation 123336. Up to 62109 conditions per place. [2025-01-10 06:54:37,734 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2025-01-10 06:54:37,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2025-01-10 06:54:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-01-10 06:54:37,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2025-01-10 06:54:37,746 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2025-01-10 06:54:37,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2025-01-10 06:54:38,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-10 06:54:38,244 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2025-01-10 06:54:38,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2025-01-10 06:54:38,249 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2025-01-10 06:54:38,251 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2025-01-10 06:54:38,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-01-10 06:54:38,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:38,252 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:54:38,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:54:38,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:54:38,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 385654233, now seen corresponding path program 1 times [2025-01-10 06:54:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548168650] [2025-01-10 06:54:38,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:38,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:38,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:38,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:38,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:38,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548168650] [2025-01-10 06:54:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548168650] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083954238] [2025-01-10 06:54:38,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:38,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:38,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:38,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:38,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:54:38,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:38,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:38,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:38,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:38,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:38,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:38,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:54:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083954238] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:38,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:54:38,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:54:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134329739] [2025-01-10 06:54:38,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:38,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:54:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:38,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:54:38,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:54:38,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:54:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2025-01-10 06:54:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:54:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:43,425 INFO L124 PetriNetUnfolderBase]: 50181/65627 cut-off events. [2025-01-10 06:54:43,426 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-01-10 06:54:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129134 conditions, 65627 events. 50181/65627 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6911. Compared 464545 event pairs, 36482 based on Foata normal form. 2/26886 useless extension candidates. Maximal degree in co-relation 129084. Up to 62099 conditions per place. [2025-01-10 06:54:44,089 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2025-01-10 06:54:44,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2025-01-10 06:54:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:54:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:54:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2025-01-10 06:54:44,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2025-01-10 06:54:44,091 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2025-01-10 06:54:44,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2025-01-10 06:54:44,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:54:44,093 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2025-01-10 06:54:44,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2025-01-10 06:54:44,094 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2025-01-10 06:54:44,094 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2025-01-10 06:54:44,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2025-01-10 06:54:44,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:44,094 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:54:44,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:44,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:44,300 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:54:44,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -929619675, now seen corresponding path program 1 times [2025-01-10 06:54:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331749485] [2025-01-10 06:54:44,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:44,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:44,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:44,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:44,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331749485] [2025-01-10 06:54:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331749485] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119311136] [2025-01-10 06:54:44,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:44,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:44,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:44,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:44,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:54:44,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:44,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:44,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:44,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:44,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:44,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:44,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119311136] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:44,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:44,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:54:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97316734] [2025-01-10 06:54:44,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:44,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:54:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:44,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:54:44,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:44,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:54:44,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2025-01-10 06:54:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:44,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:54:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:49,712 INFO L124 PetriNetUnfolderBase]: 50187/65651 cut-off events. [2025-01-10 06:54:49,713 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-01-10 06:54:49,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129228 conditions, 65651 events. 50187/65651 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 6911. Compared 464355 event pairs, 36482 based on Foata normal form. 6/26913 useless extension candidates. Maximal degree in co-relation 129086. Up to 62110 conditions per place. [2025-01-10 06:54:50,176 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2025-01-10 06:54:50,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2025-01-10 06:54:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:54:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:54:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2025-01-10 06:54:50,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2025-01-10 06:54:50,182 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2025-01-10 06:54:50,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2025-01-10 06:54:50,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-01-10 06:54:50,188 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2025-01-10 06:54:50,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2025-01-10 06:54:50,188 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2025-01-10 06:54:50,189 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2025-01-10 06:54:50,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2025-01-10 06:54:50,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:50,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:50,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:50,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:50,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:54:50,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1703156676, now seen corresponding path program 1 times [2025-01-10 06:54:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361251365] [2025-01-10 06:54:50,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:50,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:54:50,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:54:50,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361251365] [2025-01-10 06:54:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361251365] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:54:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928432628] [2025-01-10 06:54:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:50,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:54:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:50,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:54:50,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:54:50,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2025-01-10 06:54:50,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-01-10 06:54:50,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:50,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2025-01-10 06:54:50,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand