./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:01:45,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:01:45,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:01:45,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:01:45,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:01:45,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:01:45,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:01:45,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:01:45,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:01:45,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:01:45,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:01:45,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:01:45,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:01:45,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:01:45,238 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:01:45,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:01:45,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:01:45,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:01:45,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:01:45,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:01:45,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:01:45,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:01:45,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:01:45,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:01:45,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:01:45,245 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:01:45,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:01:45,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:01:45,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:01:45,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:01:45,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:01:45,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:01:45,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:01:45,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:01:45,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:01:45,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:01:45,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:01:45,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:01:45,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:01:45,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:01:45,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:01:45,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:01:45,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:01:45,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:01:45,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-11-20 22:01:45,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:01:45,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:01:45,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:01:45,537 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:01:45,537 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:01:45,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-11-20 22:01:47,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:01:47,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:01:47,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-11-20 22:01:47,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/735b8e9f0/4965e9dc348f44e3a138d7b32e1dc813/FLAG332118fd1 [2024-11-20 22:01:47,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/735b8e9f0/4965e9dc348f44e3a138d7b32e1dc813 [2024-11-20 22:01:47,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:01:47,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:01:47,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:01:47,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:01:47,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:01:47,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377382b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47, skipping insertion in model container [2024-11-20 22:01:47,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:01:47,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:01:47,524 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:01:47,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:01:47,587 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:01:47,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47 WrapperNode [2024-11-20 22:01:47,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:01:47,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:01:47,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:01:47,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:01:47,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,634 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 359 [2024-11-20 22:01:47,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:01:47,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:01:47,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:01:47,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:01:47,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,682 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]. [2024-11-20 22:01:47,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:01:47,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:01:47,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:01:47,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:01:47,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (1/1) ... [2024-11-20 22:01:47,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:01:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:47,747 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) [2024-11-20 22:01:47,749 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 [2024-11-20 22:01:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:01:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:01:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:01:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:01:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:01:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 22:01:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 22:01:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 22:01:47,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 22:01:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:01:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:01:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:01:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:01:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:01:47,797 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:01:47,902 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:01:47,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:01:48,516 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:01:48,516 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:01:49,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:01:49,051 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 22:01:49,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:01:49 BoogieIcfgContainer [2024-11-20 22:01:49,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:01:49,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:01:49,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:01:49,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:01:49,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:01:47" (1/3) ... [2024-11-20 22:01:49,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500841b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:01:49, skipping insertion in model container [2024-11-20 22:01:49,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:01:47" (2/3) ... [2024-11-20 22:01:49,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500841b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:01:49, skipping insertion in model container [2024-11-20 22:01:49,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:01:49" (3/3) ... [2024-11-20 22:01:49,064 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-11-20 22:01:49,081 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:01:49,081 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-20 22:01:49,081 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:01:49,239 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 22:01:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-20 22:01:49,329 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-20 22:01:49,329 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 22:01:49,334 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. [2024-11-20 22:01:49,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-20 22:01:49,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-20 22:01:49,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:01:49,393 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;@5c360c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:01:49,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-20 22:01:49,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:01:49,404 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 22:01:49,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:01:49,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:49,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 22:01:49,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 22:01:49,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1093182, now seen corresponding path program 1 times [2024-11-20 22:01:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991980711] [2024-11-20 22:01:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:49,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991980711] [2024-11-20 22:01:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991980711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:01:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:01:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:01:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113275630] [2024-11-20 22:01:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:01:49,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:01:49,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:01:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:01:49,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-20 22:01:49,840 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) [2024-11-20 22:01:49,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:49,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-20 22:01:49,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:59,058 INFO L124 PetriNetUnfolderBase]: 50181/66541 cut-off events. [2024-11-20 22:01:59,059 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-11-20 22:01:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130830 conditions, 66541 events. 50181/66541 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 481269 event pairs, 36482 based on Foata normal form. 2/28923 useless extension candidates. Maximal degree in co-relation 124248. Up to 62109 conditions per place. [2024-11-20 22:01:59,592 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-20 22:01:59,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-11-20 22:01:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:01:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:01:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-20 22:01:59,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-20 22:01:59,608 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-20 22:01:59,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-11-20 22:02:00,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-20 22:02:00,153 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-11-20 22:02:00,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-20 22:02:00,159 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-11-20 22:02:00,159 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-11-20 22:02:00,159 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) [2024-11-20 22:02:00,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:00,160 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 22:02:00,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:02:00,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 22:02:00,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1791640043, now seen corresponding path program 1 times [2024-11-20 22:02:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806802143] [2024-11-20 22:02:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806802143] [2024-11-20 22:02:00,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806802143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735827716] [2024-11-20 22:02:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:00,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:00,268 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) [2024-11-20 22:02:00,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:02:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:00,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:00,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:00,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735827716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:00,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 22:02:00,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634151765] [2024-11-20 22:02:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:00,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:00,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:00,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-20 22:02:00,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:00,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:00,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-20 22:02:00,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:07,129 INFO L124 PetriNetUnfolderBase]: 50181/66539 cut-off events. [2024-11-20 22:02:07,130 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-20 22:02:07,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130046 conditions, 66539 events. 50181/66539 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 481029 event pairs, 36482 based on Foata normal form. 2/28924 useless extension candidates. Maximal degree in co-relation 129996. Up to 62099 conditions per place. [2024-11-20 22:02:07,636 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-11-20 22:02:07,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-11-20 22:02:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-20 22:02:07,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-11-20 22:02:07,642 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-11-20 22:02:07,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-11-20 22:02:07,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:02:07,645 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-11-20 22:02:07,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-20 22:02:07,647 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-11-20 22:02:07,648 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-11-20 22:02:07,648 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) [2024-11-20 22:02:07,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:07,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 22:02:07,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:07,850 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 [2024-11-20 22:02:07,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 22:02:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 293734636, now seen corresponding path program 1 times [2024-11-20 22:02:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848364492] [2024-11-20 22:02:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848364492] [2024-11-20 22:02:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848364492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786663272] [2024-11-20 22:02:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:07,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:07,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:07,997 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) [2024-11-20 22:02:07,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:02:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:08,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:08,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:08,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786663272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:08,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-20 22:02:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974305329] [2024-11-20 22:02:08,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:08,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:02:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:02:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:02:08,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-20 22:02:08,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:08,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:08,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-20 22:02:08,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:15,034 INFO L124 PetriNetUnfolderBase]: 50187/66563 cut-off events. [2024-11-20 22:02:15,034 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-20 22:02:15,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130140 conditions, 66563 events. 50187/66563 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 481803 event pairs, 36482 based on Foata normal form. 6/28951 useless extension candidates. Maximal degree in co-relation 129998. Up to 62110 conditions per place. [2024-11-20 22:02:15,433 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-11-20 22:02:15,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-11-20 22:02:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-11-20 22:02:15,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-11-20 22:02:15,436 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-11-20 22:02:15,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-11-20 22:02:15,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-20 22:02:15,441 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-11-20 22:02:15,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-20 22:02:15,442 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-11-20 22:02:15,442 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-11-20 22:02:15,442 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) [2024-11-20 22:02:15,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:15,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:15,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:02:15,643 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 [2024-11-20 22:02:15,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 22:02:15,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1626261758, now seen corresponding path program 1 times [2024-11-20 22:02:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970756327] [2024-11-20 22:02:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970756327] [2024-11-20 22:02:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970756327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:02:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194337551] [2024-11-20 22:02:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:15,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:02:15,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-20 22:02:15,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:15,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:15,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-20 22:02:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand