./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:42:41,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:42:41,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:42:41,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:42:41,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:42:41,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:42:41,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:42:41,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:42:41,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:42:41,111 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:42:41,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:42:41,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:42:41,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:42:41,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:42:41,113 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:42:41,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:42:41,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:42:41,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:42:41,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:42:41,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:42:41,115 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/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 -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2025-03-09 06:42:41,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:42:41,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:42:41,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:42:41,391 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:42:41,391 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:42:41,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2025-03-09 06:42:42,638 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9725c1753/ed369f14274c463d92b6e7a79a199d83/FLAG9c68055fb [2025-03-09 06:42:42,890 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:42:42,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2025-03-09 06:42:42,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9725c1753/ed369f14274c463d92b6e7a79a199d83/FLAG9c68055fb [2025-03-09 06:42:43,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9725c1753/ed369f14274c463d92b6e7a79a199d83 [2025-03-09 06:42:43,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:42:43,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:42:43,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:43,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:42:43,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:42:43,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48182303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43, skipping insertion in model container [2025-03-09 06:42:43,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:42:43,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:43,366 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:42:43,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:43,405 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:42:43,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43 WrapperNode [2025-03-09 06:42:43,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:43,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:43,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:42:43,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:42:43,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,444 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 365 [2025-03-09 06:42:43,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:43,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:42:43,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:42:43,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:42:43,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,489 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-09 06:42:43,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:42:43,509 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:42:43,509 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:42:43,510 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:42:43,511 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (1/1) ... [2025-03-09 06:42:43,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:42:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:43,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:42:43,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:42:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:42:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:42:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:42:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:42:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:42:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:42:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:42:43,566 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:42:43,673 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:42:43,675 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:42:44,151 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:42:44,151 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:42:44,586 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:42:44,586 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:42:44,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:44 BoogieIcfgContainer [2025-03-09 06:42:44,590 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:42:44,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:42:44,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:42:44,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:42:44,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:42:43" (1/3) ... [2025-03-09 06:42:44,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb7ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:44, skipping insertion in model container [2025-03-09 06:42:44,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:43" (2/3) ... [2025-03-09 06:42:44,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb7ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:44, skipping insertion in model container [2025-03-09 06:42:44,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:44" (3/3) ... [2025-03-09 06:42:44,600 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2025-03-09 06:42:44,615 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:42:44,617 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series2.wvr.c that has 5 procedures, 80 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2025-03-09 06:42:44,617 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:42:44,752 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:42:44,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 86 transitions, 200 flow [2025-03-09 06:42:44,813 INFO L124 PetriNetUnfolderBase]: 7/82 cut-off events. [2025-03-09 06:42:44,816 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:42:44,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 82 events. 7/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 278 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2025-03-09 06:42:44,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 86 transitions, 200 flow [2025-03-09 06:42:44,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 80 transitions, 181 flow [2025-03-09 06:42:44,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:42:44,839 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;@2e756b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:42:44,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2025-03-09 06:42:44,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:42:44,842 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:42:44,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:42:44,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:44,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:42:44,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:42:44,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1084191, now seen corresponding path program 1 times [2025-03-09 06:42:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:44,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970654073] [2025-03-09 06:42:44,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:44,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:42:44,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:42:44,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:44,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:45,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970654073] [2025-03-09 06:42:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970654073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:45,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:42:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77751158] [2025-03-09 06:42:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:45,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:45,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:45,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:45,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:45,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 86 [2025-03-09 06:42:45,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-09 06:42:45,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:45,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 86 [2025-03-09 06:42:45,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:49,337 INFO L124 PetriNetUnfolderBase]: 28141/37235 cut-off events. [2025-03-09 06:42:49,338 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2025-03-09 06:42:49,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75225 conditions, 37235 events. 28141/37235 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 2348. Compared 231081 event pairs, 23945 based on Foata normal form. 3/21977 useless extension candidates. Maximal degree in co-relation 69444. Up to 36466 conditions per place. [2025-03-09 06:42:49,626 INFO L140 encePairwiseOnDemand]: 59/86 looper letters, 57 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2025-03-09 06:42:49,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 311 flow [2025-03-09 06:42:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2025-03-09 06:42:49,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2025-03-09 06:42:49,642 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 181 flow. Second operand 4 states and 144 transitions. [2025-03-09 06:42:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 311 flow [2025-03-09 06:42:49,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 298 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:42:49,697 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 234 flow [2025-03-09 06:42:49,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2025-03-09 06:42:49,704 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2025-03-09 06:42:49,704 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 234 flow [2025-03-09 06:42:49,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-09 06:42:49,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:49,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:42:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:42:49,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:42:49,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2059594093, now seen corresponding path program 1 times [2025-03-09 06:42:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155149695] [2025-03-09 06:42:49,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:49,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:42:49,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:42:49,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:49,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:49,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155149695] [2025-03-09 06:42:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155149695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686831002] [2025-03-09 06:42:49,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:49,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:49,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:49,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:42:49,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:42:49,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:42:49,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:49,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:49,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:49,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:49,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:42:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686831002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:49,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:42:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:42:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062828472] [2025-03-09 06:42:49,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:49,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:42:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:49,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:42:49,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:42:49,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 86 [2025-03-09 06:42:49,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2025-03-09 06:42:49,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:49,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 86 [2025-03-09 06:42:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:53,231 INFO L124 PetriNetUnfolderBase]: 28141/37232 cut-off events. [2025-03-09 06:42:53,231 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-09 06:42:53,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74544 conditions, 37232 events. 28141/37232 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 2348. Compared 230821 event pairs, 23945 based on Foata normal form. 3/21979 useless extension candidates. Maximal degree in co-relation 74471. Up to 36451 conditions per place. [2025-03-09 06:42:53,463 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 47 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2025-03-09 06:42:53,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 350 flow [2025-03-09 06:42:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:42:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:42:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2025-03-09 06:42:53,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30426356589147285 [2025-03-09 06:42:53,465 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 234 flow. Second operand 6 states and 157 transitions. [2025-03-09 06:42:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 350 flow [2025-03-09 06:42:53,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:42:53,467 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 256 flow [2025-03-09 06:42:53,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2025-03-09 06:42:53,467 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2025-03-09 06:42:53,467 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 256 flow [2025-03-09 06:42:53,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2025-03-09 06:42:53,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:53,468 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:42:53,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:53,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:53,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:42:53,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 577093573, now seen corresponding path program 1 times [2025-03-09 06:42:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797863511] [2025-03-09 06:42:53,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:53,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:42:53,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:42:53,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:53,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:53,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797863511] [2025-03-09 06:42:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797863511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:53,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58406838] [2025-03-09 06:42:53,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:53,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:53,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:53,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:53,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:42:53,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:42:53,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:42:53,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:53,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:53,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:53,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:53,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:53,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58406838] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:53,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-09 06:42:53,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578625522] [2025-03-09 06:42:53,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:53,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:42:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:53,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:42:53,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:42:53,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 86 [2025-03-09 06:42:53,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2025-03-09 06:42:53,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:53,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 86 [2025-03-09 06:42:53,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:56,712 INFO L124 PetriNetUnfolderBase]: 28150/37268 cut-off events. [2025-03-09 06:42:56,715 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-03-09 06:42:56,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74685 conditions, 37268 events. 28150/37268 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 2348. Compared 231038 event pairs, 23945 based on Foata normal form. 9/22021 useless extension candidates. Maximal degree in co-relation 74473. Up to 36466 conditions per place. [2025-03-09 06:42:56,912 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 54 selfloop transitions, 37 changer transitions 0/102 dead transitions. [2025-03-09 06:42:56,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 612 flow [2025-03-09 06:42:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:42:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:42:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2025-03-09 06:42:56,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29069767441860467 [2025-03-09 06:42:56,915 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 256 flow. Second operand 10 states and 250 transitions. [2025-03-09 06:42:56,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 612 flow [2025-03-09 06:42:56,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 529 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:56,918 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 471 flow [2025-03-09 06:42:56,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2025-03-09 06:42:56,919 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2025-03-09 06:42:56,919 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 471 flow [2025-03-09 06:42:56,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2025-03-09 06:42:56,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:56,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:56,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:42:57,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-09 06:42:57,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:42:57,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1004356685, now seen corresponding path program 1 times [2025-03-09 06:42:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765739863] [2025-03-09 06:42:57,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:57,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:57,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:57,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:57,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:57,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765739863] [2025-03-09 06:42:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765739863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:57,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:57,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:42:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763424256] [2025-03-09 06:42:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:57,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:57,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:57,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:57,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 86 [2025-03-09 06:42:57,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:42:57,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:57,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 86 [2025-03-09 06:42:57,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:00,205 INFO L124 PetriNetUnfolderBase]: 23773/31489 cut-off events. [2025-03-09 06:43:00,206 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2025-03-09 06:43:00,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63138 conditions, 31489 events. 23773/31489 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 191361 event pairs, 20016 based on Foata normal form. 0/19465 useless extension candidates. Maximal degree in co-relation 63040. Up to 30841 conditions per place. [2025-03-09 06:43:00,452 INFO L140 encePairwiseOnDemand]: 84/86 looper letters, 86 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2025-03-09 06:43:00,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 643 flow [2025-03-09 06:43:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-03-09 06:43:00,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2025-03-09 06:43:00,454 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 471 flow. Second operand 3 states and 115 transitions. [2025-03-09 06:43:00,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 643 flow [2025-03-09 06:43:00,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 606 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:00,459 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 434 flow [2025-03-09 06:43:00,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2025-03-09 06:43:00,460 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2025-03-09 06:43:00,460 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 434 flow [2025-03-09 06:43:00,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:43:00,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:00,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:00,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:43:00,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:43:00,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1004356684, now seen corresponding path program 1 times [2025-03-09 06:43:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:00,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735912915] [2025-03-09 06:43:00,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:00,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:00,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:00,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:00,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735912915] [2025-03-09 06:43:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735912915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074177802] [2025-03-09 06:43:00,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:00,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:00,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:00,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:00,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 86 [2025-03-09 06:43:00,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:43:00,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:00,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 86 [2025-03-09 06:43:00,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:03,864 INFO L124 PetriNetUnfolderBase]: 34399/46348 cut-off events. [2025-03-09 06:43:03,865 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2025-03-09 06:43:03,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92081 conditions, 46348 events. 34399/46348 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 2606. Compared 304228 event pairs, 12158 based on Foata normal form. 0/29762 useless extension candidates. Maximal degree in co-relation 92068. Up to 26418 conditions per place. [2025-03-09 06:43:04,104 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 122 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2025-03-09 06:43:04,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 138 transitions, 763 flow [2025-03-09 06:43:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2025-03-09 06:43:04,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5891472868217055 [2025-03-09 06:43:04,108 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 434 flow. Second operand 3 states and 152 transitions. [2025-03-09 06:43:04,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 138 transitions, 763 flow [2025-03-09 06:43:04,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 138 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:04,113 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 445 flow [2025-03-09 06:43:04,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2025-03-09 06:43:04,114 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2025-03-09 06:43:04,114 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 445 flow [2025-03-09 06:43:04,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:43:04,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:04,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:04,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:43:04,114 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:43:04,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash 683367196, now seen corresponding path program 1 times [2025-03-09 06:43:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:04,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245973991] [2025-03-09 06:43:04,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:04,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:43:04,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:43:04,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:04,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:04,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245973991] [2025-03-09 06:43:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245973991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554380650] [2025-03-09 06:43:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:04,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:04,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:04,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:04,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 86 [2025-03-09 06:43:04,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:43:04,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:04,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 86 [2025-03-09 06:43:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:10,054 INFO L124 PetriNetUnfolderBase]: 50760/67621 cut-off events. [2025-03-09 06:43:10,054 INFO L125 PetriNetUnfolderBase]: For 4618/4618 co-relation queries the response was YES. [2025-03-09 06:43:10,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141892 conditions, 67621 events. 50760/67621 cut-off events. For 4618/4618 co-relation queries the response was YES. Maximal size of possible extension queue 3353. Compared 445646 event pairs, 20766 based on Foata normal form. 0/42747 useless extension candidates. Maximal degree in co-relation 141877. Up to 33444 conditions per place. [2025-03-09 06:43:10,520 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 121 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-03-09 06:43:10,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 778 flow [2025-03-09 06:43:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2025-03-09 06:43:10,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2025-03-09 06:43:10,716 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 445 flow. Second operand 3 states and 150 transitions. [2025-03-09 06:43:10,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 778 flow [2025-03-09 06:43:10,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:10,734 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 465 flow [2025-03-09 06:43:10,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2025-03-09 06:43:10,735 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2025-03-09 06:43:10,736 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 465 flow [2025-03-09 06:43:10,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:43:10,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:10,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:10,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:43:10,736 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2025-03-09 06:43:10,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash 683367191, now seen corresponding path program 1 times [2025-03-09 06:43:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113168435] [2025-03-09 06:43:10,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:10,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:43:10,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:43:10,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:10,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113168435] [2025-03-09 06:43:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113168435] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271891329] [2025-03-09 06:43:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:10,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:10,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:10,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:10,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:10,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 86 [2025-03-09 06:43:10,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2025-03-09 06:43:10,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:10,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 86 [2025-03-09 06:43:10,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand