./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:05:38,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:05:38,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:05:38,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:05:38,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:05:38,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:05:38,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:05:38,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:05:38,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:05:38,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:05:38,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:05:38,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:05:38,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:05:38,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:05:38,558 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:05:38,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:05:38,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:05:38,559 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:05:38,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:05:38,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:05:38,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:05:38,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:05:38,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:05:38,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:05:38,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:05:38,565 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:05:38,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:05:38,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:05:38,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:05:38,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:05:38,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:05:38,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:05:38,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:05:38,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:05:38,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:38,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:05:38,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:05:38,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:05:38,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:05:38,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:05:38,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:05:38,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:05:38,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:05:38,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:05:38,572 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2024-11-19 14:05:38,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:05:38,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:05:38,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:05:38,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:05:38,860 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:05:38,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-11-19 14:05:40,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:05:40,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:05:40,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-11-19 14:05:40,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/232b7fdcd/f50ff13935504320b2fad9bcf0f541ba/FLAGf097199ac [2024-11-19 14:05:40,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/232b7fdcd/f50ff13935504320b2fad9bcf0f541ba [2024-11-19 14:05:40,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:05:40,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:05:40,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:40,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:05:40,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:05:40,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c20656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40, skipping insertion in model container [2024-11-19 14:05:40,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:05:40,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:40,833 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:05:40,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:40,886 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:05:40,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40 WrapperNode [2024-11-19 14:05:40,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:40,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:40,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:05:40,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:05:40,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,942 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 359 [2024-11-19 14:05:40,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:40,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:05:40,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:05:40,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:05:40,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,990 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]. [2024-11-19 14:05:40,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:40,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:05:41,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:05:41,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:05:41,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:05:41,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (1/1) ... [2024-11-19 14:05:41,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:41,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:05:41,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:05:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:05:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:05:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:05:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:05:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:05:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:05:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:05:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:05:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:05:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:05:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:05:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:05:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:05:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:05:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:05:41,151 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:05:41,271 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:05:41,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:05:41,826 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:05:41,826 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:05:42,414 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:05:42,414 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:05:42,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:42 BoogieIcfgContainer [2024-11-19 14:05:42,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:05:42,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:05:42,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:05:42,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:05:42,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:05:40" (1/3) ... [2024-11-19 14:05:42,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a210f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:42, skipping insertion in model container [2024-11-19 14:05:42,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:40" (2/3) ... [2024-11-19 14:05:42,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a210f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:42, skipping insertion in model container [2024-11-19 14:05:42,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:42" (3/3) ... [2024-11-19 14:05:42,426 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2024-11-19 14:05:42,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:05:42,469 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 14:05:42,469 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:05:42,639 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:05:42,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:05:42,734 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-19 14:05:42,735 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:05:42,739 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 265 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. [2024-11-19 14:05:42,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:05:42,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-19 14:05:42,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:05:42,761 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;@21ec6060, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:05:42,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 14:05:42,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:05:42,767 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:05:42,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:05:42,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:42,768 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:05:42,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:05:42,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1093182, now seen corresponding path program 1 times [2024-11-19 14:05:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802441817] [2024-11-19 14:05:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802441817] [2024-11-19 14:05:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802441817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:43,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:43,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:05:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433293063] [2024-11-19 14:05:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:43,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:43,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:43,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:05:43,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:43,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:43,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:05:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:50,822 INFO L124 PetriNetUnfolderBase]: 38398/51528 cut-off events. [2024-11-19 14:05:50,822 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-11-19 14:05:50,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101238 conditions, 51528 events. 38398/51528 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 373715 event pairs, 28674 based on Foata normal form. 2/24393 useless extension candidates. Maximal degree in co-relation 95328. Up to 47902 conditions per place. [2024-11-19 14:05:51,284 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 49 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-19 14:05:51,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 281 flow [2024-11-19 14:05:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-19 14:05:51,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-19 14:05:51,302 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-19 14:05:51,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 281 flow [2024-11-19 14:05:51,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:05:51,437 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2024-11-19 14:05:51,439 INFO L260 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} [2024-11-19 14:05:51,443 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2024-11-19 14:05:51,445 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2024-11-19 14:05:51,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:51,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:51,447 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:05:51,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:05:51,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:05:51,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1791640043, now seen corresponding path program 1 times [2024-11-19 14:05:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441804687] [2024-11-19 14:05:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441804687] [2024-11-19 14:05:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441804687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624493301] [2024-11-19 14:05:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:51,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:05:51,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:05:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:51,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:51,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:51,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:05:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624493301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:51,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:05:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:05:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430818820] [2024-11-19 14:05:51,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:51,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:05:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:05:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:05:51,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:05:51,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:51,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:51,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:05:51,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:57,286 INFO L124 PetriNetUnfolderBase]: 38398/51526 cut-off events. [2024-11-19 14:05:57,287 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-19 14:05:57,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100536 conditions, 51526 events. 38398/51526 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 373739 event pairs, 28674 based on Foata normal form. 2/24394 useless extension candidates. Maximal degree in co-relation 100486. Up to 47892 conditions per place. [2024-11-19 14:05:57,868 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 42 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-19 14:05:57,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2024-11-19 14:05:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:05:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:05:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-19 14:05:57,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-11-19 14:05:57,871 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 188 transitions. [2024-11-19 14:05:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2024-11-19 14:05:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:57,873 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2024-11-19 14:05:57,874 INFO L260 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} [2024-11-19 14:05:57,874 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2024-11-19 14:05:57,875 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2024-11-19 14:05:57,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:57,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:57,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:05:57,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:05:58,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:58,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:05:58,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash 293734636, now seen corresponding path program 1 times [2024-11-19 14:05:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601538966] [2024-11-19 14:05:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601538966] [2024-11-19 14:05:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601538966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872102599] [2024-11-19 14:05:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:58,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:05:58,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:05:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:58,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872102599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:58,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:58,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:05:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246764438] [2024-11-19 14:05:58,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:58,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:05:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:05:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:05:58,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:05:58,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:58,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:58,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:05:58,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:03,743 INFO L124 PetriNetUnfolderBase]: 38404/51550 cut-off events. [2024-11-19 14:06:03,743 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-19 14:06:03,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100630 conditions, 51550 events. 38404/51550 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 374339 event pairs, 28674 based on Foata normal form. 6/24421 useless extension candidates. Maximal degree in co-relation 100488. Up to 47903 conditions per place. [2024-11-19 14:06:04,310 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-19 14:06:04,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2024-11-19 14:06:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-19 14:06:04,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2024-11-19 14:06:04,316 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 298 transitions. [2024-11-19 14:06:04,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2024-11-19 14:06:04,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:04,322 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2024-11-19 14:06:04,322 INFO L260 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} [2024-11-19 14:06:04,324 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2024-11-19 14:06:04,324 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2024-11-19 14:06:04,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:04,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:04,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:04,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:04,526 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 [2024-11-19 14:06:04,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:06:04,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1626261757, now seen corresponding path program 1 times [2024-11-19 14:06:04,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480968321] [2024-11-19 14:06:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:04,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:04,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480968321] [2024-11-19 14:06:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480968321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:04,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584769837] [2024-11-19 14:06:04,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:04,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:04,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-19 14:06:04,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:04,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:04,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-19 14:06:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:10,442 INFO L124 PetriNetUnfolderBase]: 40732/54120 cut-off events. [2024-11-19 14:06:10,442 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-19 14:06:10,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106510 conditions, 54120 events. 40732/54120 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5324. Compared 387345 event pairs, 30522 based on Foata normal form. 710/26044 useless extension candidates. Maximal degree in co-relation 106414. Up to 47918 conditions per place. [2024-11-19 14:06:10,809 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 108 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-19 14:06:10,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 753 flow [2024-11-19 14:06:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-19 14:06:10,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390243902439025 [2024-11-19 14:06:10,811 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 360 flow. Second operand 5 states and 221 transitions. [2024-11-19 14:06:10,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 753 flow [2024-11-19 14:06:10,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 719 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:10,816 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 383 flow [2024-11-19 14:06:10,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-11-19 14:06:10,818 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-19 14:06:10,818 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 383 flow [2024-11-19 14:06:10,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:10,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:10,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:10,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:10,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:06:10,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash 92185320, now seen corresponding path program 1 times [2024-11-19 14:06:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:10,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97446635] [2024-11-19 14:06:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:10,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:10,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97446635] [2024-11-19 14:06:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97446635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548721183] [2024-11-19 14:06:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:10,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-19 14:06:10,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-19 14:06:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand