./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.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-bad-buffer-mult-alt.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 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:40:48,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:40:48,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:40:48,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:40:48,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:40:48,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:40:48,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:40:48,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:40:48,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:40:48,456 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:40:48,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:40:48,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:40:48,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:40:48,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:40:48,457 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:40:48,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:40:48,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:40:48,459 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:40:48,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:40:48,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:40:48,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:40:48,460 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 -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2025-03-09 06:40:48,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:40:48,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:40:48,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:40:48,687 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:40:48,687 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:40:48,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-03-09 06:40:49,829 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f1c841/d2e8faed9929492286ebc3f2122c554c/FLAGeb64ab254 [2025-03-09 06:40:50,100 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:40:50,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-03-09 06:40:50,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f1c841/d2e8faed9929492286ebc3f2122c554c/FLAGeb64ab254 [2025-03-09 06:40:50,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c2f1c841/d2e8faed9929492286ebc3f2122c554c [2025-03-09 06:40:50,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:40:50,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:40:50,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:40:50,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:40:50,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:40:50,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f887bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50, skipping insertion in model container [2025-03-09 06:40:50,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:40:50,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:40:50,597 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:40:50,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:40:50,635 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:40:50,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50 WrapperNode [2025-03-09 06:40:50,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:40:50,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:40:50,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:40:50,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:40:50,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,667 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 341 [2025-03-09 06:40:50,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:40:50,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:40:50,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:40:50,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:40:50,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,694 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]. [2025-03-09 06:40:50,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,700 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:40:50,710 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:40:50,710 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:40:50,710 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:40:50,711 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (1/1) ... [2025-03-09 06:40:50,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:40:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:40:50,734 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 06:40:50,736 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 06:40:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:40:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:40:50,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:40:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:40:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:40:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:40:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:40:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:40:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:40:50,758 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 06:40:50,864 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:40:50,865 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:40:51,290 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:40:51,290 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:40:51,643 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:40:51,643 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:40:51,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:40:51 BoogieIcfgContainer [2025-03-09 06:40:51,644 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:40:51,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:40:51,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:40:51,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:40:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:40:50" (1/3) ... [2025-03-09 06:40:51,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d5060e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:40:51, skipping insertion in model container [2025-03-09 06:40:51,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:40:50" (2/3) ... [2025-03-09 06:40:51,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d5060e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:40:51, skipping insertion in model container [2025-03-09 06:40:51,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:40:51" (3/3) ... [2025-03-09 06:40:51,653 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2025-03-09 06:40:51,665 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:40:51,667 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-03-09 06:40:51,667 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:40:51,805 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:40:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2025-03-09 06:40:51,863 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2025-03-09 06:40:51,865 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:40:51,867 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 12. Compared 257 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. [2025-03-09 06:40:51,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2025-03-09 06:40:51,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2025-03-09 06:40:51,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:40:51,884 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;@225f23d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:40:51,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-03-09 06:40:51,891 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:40:51,891 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:40:51,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:40:51,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:51,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:40:51,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:40:51,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash 961507, now seen corresponding path program 1 times [2025-03-09 06:40:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494550475] [2025-03-09 06:40:51,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:51,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:40:51,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:40:51,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:51,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:52,135 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 06:40:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494550475] [2025-03-09 06:40:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494550475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:40:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554716363] [2025-03-09 06:40:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:52,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:52,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:52,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:52,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2025-03-09 06:40:52,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 06:40:52,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:52,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2025-03-09 06:40:52,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:57,791 INFO L124 PetriNetUnfolderBase]: 52622/69081 cut-off events. [2025-03-09 06:40:57,791 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2025-03-09 06:40:57,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139716 conditions, 69081 events. 52622/69081 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 4365. Compared 457095 event pairs, 46020 based on Foata normal form. 2/38285 useless extension candidates. Maximal degree in co-relation 131766. Up to 68107 conditions per place. [2025-03-09 06:40:58,213 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 57 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2025-03-09 06:40:58,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 297 flow [2025-03-09 06:40:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:40:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:40:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-09 06:40:58,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2025-03-09 06:40:58,227 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 132 transitions. [2025-03-09 06:40:58,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 297 flow [2025-03-09 06:40:58,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:40:58,827 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2025-03-09 06:40:58,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2025-03-09 06:40:58,831 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2025-03-09 06:40:58,831 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2025-03-09 06:40:58,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 06:40:58,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:58,831 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:40:58,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:40:58,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:40:58,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1419660238, now seen corresponding path program 1 times [2025-03-09 06:40:58,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:58,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101656045] [2025-03-09 06:40:58,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:58,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:58,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:40:58,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:40:58,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:58,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:58,924 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 06:40:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101656045] [2025-03-09 06:40:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101656045] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:40:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920975049] [2025-03-09 06:40:58,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:58,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:40:58,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:40:58,927 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 06:40:58,929 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 06:40:59,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:40:59,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:40:59,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:59,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:59,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:40:59,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:40:59,060 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 06:40:59,060 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:40:59,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920975049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:59,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:40:59,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:40:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978546961] [2025-03-09 06:40:59,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:59,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:40:59,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:59,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:40:59,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:40:59,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2025-03-09 06:40:59,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 06:40:59,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:59,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2025-03-09 06:40:59,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:04,244 INFO L124 PetriNetUnfolderBase]: 52622/69079 cut-off events. [2025-03-09 06:41:04,244 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2025-03-09 06:41:04,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138744 conditions, 69079 events. 52622/69079 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 4365. Compared 456951 event pairs, 46020 based on Foata normal form. 2/38286 useless extension candidates. Maximal degree in co-relation 138694. Up to 68097 conditions per place. [2025-03-09 06:41:04,580 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 50 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2025-03-09 06:41:04,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 320 flow [2025-03-09 06:41:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2025-03-09 06:41:04,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3008130081300813 [2025-03-09 06:41:04,583 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 148 transitions. [2025-03-09 06:41:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 320 flow [2025-03-09 06:41:04,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:04,585 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2025-03-09 06:41:04,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2025-03-09 06:41:04,587 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2025-03-09 06:41:04,587 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2025-03-09 06:41:04,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 06:41:04,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:04,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:41:04,595 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 06:41:04,792 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 06:41:04,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:04,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1059793560, now seen corresponding path program 1 times [2025-03-09 06:41:04,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:04,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728451511] [2025-03-09 06:41:04,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:04,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:04,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:04,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:04,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:04,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:04,925 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 06:41:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728451511] [2025-03-09 06:41:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728451511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689342523] [2025-03-09 06:41:04,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:04,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:04,928 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 06:41:04,930 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 06:41:05,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:05,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:05,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:05,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:05,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:05,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:05,041 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 06:41:05,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:05,074 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 06:41:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689342523] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:05,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:41:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69692683] [2025-03-09 06:41:05,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:05,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:05,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:05,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:05,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2025-03-09 06:41:05,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 06:41:05,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:05,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2025-03-09 06:41:05,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:10,634 INFO L124 PetriNetUnfolderBase]: 52628/69103 cut-off events. [2025-03-09 06:41:10,635 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-09 06:41:10,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138838 conditions, 69103 events. 52628/69103 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 4365. Compared 457465 event pairs, 46020 based on Foata normal form. 6/38313 useless extension candidates. Maximal degree in co-relation 138696. Up to 68108 conditions per place. [2025-03-09 06:41:11,032 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 55 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2025-03-09 06:41:11,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 494 flow [2025-03-09 06:41:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2025-03-09 06:41:11,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.275609756097561 [2025-03-09 06:41:11,034 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 226 transitions. [2025-03-09 06:41:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 494 flow [2025-03-09 06:41:11,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 436 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:11,037 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2025-03-09 06:41:11,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2025-03-09 06:41:11,037 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2025-03-09 06:41:11,037 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2025-03-09 06:41:11,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 06:41:11,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:11,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:11,043 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 06:41:11,238 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 06:41:11,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:11,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1357584763, now seen corresponding path program 1 times [2025-03-09 06:41:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:11,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905267986] [2025-03-09 06:41:11,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:11,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:41:11,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:41:11,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:11,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:11,430 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 06:41:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905267986] [2025-03-09 06:41:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905267986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481502509] [2025-03-09 06:41:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:11,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:11,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:11,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:11,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 82 [2025-03-09 06:41:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 06:41:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 82 [2025-03-09 06:41:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand