./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.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-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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:05:46,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:05:47,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:05:47,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:05:47,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:05:47,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:05:47,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:05:47,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:05:47,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:05:47,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:05:47,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:05:47,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:05:47,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:05:47,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:05:47,096 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:05:47,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:05:47,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:05:47,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:05:47,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:05:47,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:05:47,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:05:47,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:05:47,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:05:47,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:05:47,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:05:47,101 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:05:47,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:05:47,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:05:47,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:05:47,102 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:05:47,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:05:47,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:05:47,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:05:47,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:05:47,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:47,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:05:47,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:05:47,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:05:47,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:05:47,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:05:47,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:05:47,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:05:47,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:05:47,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:05:47,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-11-19 14:05:47,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:05:47,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:05:47,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:05:47,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:05:47,384 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:05:47,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-11-19 14:05:48,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:05:49,047 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:05:49,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-11-19 14:05:49,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60bb2753/c35930d781854905becd49766e5e2ed1/FLAG7ad259340 [2024-11-19 14:05:49,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60bb2753/c35930d781854905becd49766e5e2ed1 [2024-11-19 14:05:49,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:05:49,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:05:49,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:49,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:05:49,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:05:49,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6688fda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49, skipping insertion in model container [2024-11-19 14:05:49,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:05:49,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:49,368 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:05:49,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:49,423 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:05:49,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49 WrapperNode [2024-11-19 14:05:49,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:49,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:49,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:05:49,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:05:49,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,496 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 359 [2024-11-19 14:05:49,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:49,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:05:49,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:05:49,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:05:49,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,521 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,554 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 14:05:49,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:05:49,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:05:49,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:05:49,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:05:49,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (1/1) ... [2024-11-19 14:05:49,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:49,628 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 14:05:49,634 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 14:05:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:05:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:05:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:05:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:05:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:05:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:05:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:05:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:05:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:05:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:05:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:05:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:05:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:05:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:05:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:05:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:05:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:05:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:05:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:05:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:05:49,689 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 14:05:49,845 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:05:49,847 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:05:50,405 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:05:50,405 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:05:50,982 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:05:50,983 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:05:50,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:50 BoogieIcfgContainer [2024-11-19 14:05:50,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:05:50,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:05:50,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:05:50,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:05:50,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:05:49" (1/3) ... [2024-11-19 14:05:50,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d57b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:50, skipping insertion in model container [2024-11-19 14:05:50,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:49" (2/3) ... [2024-11-19 14:05:50,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d57b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:50, skipping insertion in model container [2024-11-19 14:05:50,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:50" (3/3) ... [2024-11-19 14:05:50,995 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-11-19 14:05:51,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:05:51,014 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 14:05:51,014 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:05:51,149 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:05:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:05:51,247 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-19 14:05:51,248 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:05:51,254 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 14:05:51,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:05:51,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-19 14:05:51,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:05:51,275 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;@44973051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:05:51,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 14:05:51,279 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:05:51,279 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:05:51,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:05:51,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:51,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:05:51,281 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 14:05:51,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1093182, now seen corresponding path program 1 times [2024-11-19 14:05:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:51,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842402131] [2024-11-19 14:05:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:51,602 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 14:05:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842402131] [2024-11-19 14:05:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842402131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:05:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737432274] [2024-11-19 14:05:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:51,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:51,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:05:51,667 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 14:05:51,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:51,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:05:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:00,698 INFO L124 PetriNetUnfolderBase]: 50181/66541 cut-off events. [2024-11-19 14:06:00,698 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-11-19 14:06:00,877 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. [2024-11-19 14:06:01,314 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-19 14:06:01,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-11-19 14:06:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-19 14:06:01,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-19 14:06:01,329 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-19 14:06:01,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-11-19 14:06:01,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:01,452 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-11-19 14:06:01,454 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} [2024-11-19 14:06:01,458 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-11-19 14:06:01,459 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-11-19 14:06:01,459 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 14:06:01,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:01,460 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:06:01,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:01,461 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 14:06:01,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:01,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1791640043, now seen corresponding path program 1 times [2024-11-19 14:06:01,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:01,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57398595] [2024-11-19 14:06:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:01,654 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 14:06:01,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57398595] [2024-11-19 14:06:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57398595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053725796] [2024-11-19 14:06:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:01,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:01,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:01,682 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 14:06:01,687 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 14:06:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:01,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:01,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:01,886 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 14:06:01,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053725796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:06:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252315295] [2024-11-19 14:06:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:01,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:01,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:06:01,913 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) [2024-11-19 14:06:01,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:01,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:06:01,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:08,942 INFO L124 PetriNetUnfolderBase]: 50181/66539 cut-off events. [2024-11-19 14:06:08,943 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-19 14:06:09,090 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. [2024-11-19 14:06:09,388 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-11-19 14:06:09,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-11-19 14:06:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-19 14:06:09,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-11-19 14:06:09,391 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-11-19 14:06:09,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-11-19 14:06:09,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:09,394 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-11-19 14:06:09,394 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} [2024-11-19 14:06:09,395 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-11-19 14:06:09,395 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-11-19 14:06:09,396 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 14:06:09,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:09,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:06:09,413 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 14:06:09,597 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 14:06:09,597 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 14:06:09,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash 293734636, now seen corresponding path program 1 times [2024-11-19 14:06:09,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:09,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731573908] [2024-11-19 14:06:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:09,692 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 14:06:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731573908] [2024-11-19 14:06:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731573908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579756097] [2024-11-19 14:06:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:09,696 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 14:06:09,698 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 14:06:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:09,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:09,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:09,841 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 14:06:09,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:09,884 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 14:06:09,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579756097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:09,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:09,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:06:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476598275] [2024-11-19 14:06:09,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:09,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:09,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:06:09,913 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) [2024-11-19 14:06:09,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:09,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:06:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:16,829 INFO L124 PetriNetUnfolderBase]: 50187/66563 cut-off events. [2024-11-19 14:06:16,830 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-19 14:06:16,985 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. [2024-11-19 14:06:17,294 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-11-19 14:06:17,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-11-19 14:06:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-11-19 14:06:17,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-11-19 14:06:17,301 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-11-19 14:06:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-11-19 14:06:17,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:17,307 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-11-19 14:06:17,307 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} [2024-11-19 14:06:17,309 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-11-19 14:06:17,309 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-11-19 14:06:17,309 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 14:06:17,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:17,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:17,329 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 14:06:17,514 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 14:06:17,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:06:17,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1626261758, now seen corresponding path program 1 times [2024-11-19 14:06:17,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:17,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273799666] [2024-11-19 14:06:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,576 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 14:06:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273799666] [2024-11-19 14:06:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273799666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683441190] [2024-11-19 14:06:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:17,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:17,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:17,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-19 14:06:17,586 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) [2024-11-19 14:06:17,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-19 14:06:17,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand