./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-bad-dot-product.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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:58:25,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:58:26,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:58:26,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:58:26,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:58:26,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:58:26,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:58:26,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:58:26,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:58:26,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:58:26,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:58:26,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:58:26,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:58:26,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:58:26,047 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:58:26,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:58:26,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:58:26,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:58:26,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:58:26,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:58:26,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:58:26,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:58:26,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:58:26,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:58:26,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:58:26,050 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:58:26,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:58:26,050 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:58:26,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:58:26,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:58:26,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:58:26,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:58:26,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:58:26,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:58:26,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:26,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:58:26,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:58:26,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:58:26,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:58:26,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:58:26,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:58:26,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:58:26,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:58:26,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:58:26,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-23 01:58:26,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:58:26,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:58:26,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:58:26,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:58:26,315 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:58:26,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-23 01:58:27,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:58:27,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:58:27,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-23 01:58:27,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b453d733/0f271015638d4107a964ff0078b37727/FLAG82bfe525f [2024-11-23 01:58:27,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b453d733/0f271015638d4107a964ff0078b37727 [2024-11-23 01:58:27,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:58:27,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:58:27,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:27,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:58:27,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:58:27,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:27" (1/1) ... [2024-11-23 01:58:27,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1df2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:27, skipping insertion in model container [2024-11-23 01:58:27,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:27" (1/1) ... [2024-11-23 01:58:27,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:58:28,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:28,184 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:58:28,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:28,282 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:58:28,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28 WrapperNode [2024-11-23 01:58:28,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:28,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:28,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:58:28,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:58:28,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,332 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 332 [2024-11-23 01:58:28,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:28,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:58:28,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:58:28,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:58:28,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,364 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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]. [2024-11-23 01:58:28,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:58:28,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:58:28,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:58:28,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:58:28,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (1/1) ... [2024-11-23 01:58:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:28,440 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) [2024-11-23 01:58:28,443 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 [2024-11-23 01:58:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:58:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:58:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:58:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:58:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:58:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:58:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:58:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:58:28,489 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:58:28,586 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:58:28,588 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:58:29,082 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:58:29,083 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:58:29,375 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:58:29,376 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-23 01:58:29,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:29 BoogieIcfgContainer [2024-11-23 01:58:29,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:58:29,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:58:29,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:58:29,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:58:29,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:27" (1/3) ... [2024-11-23 01:58:29,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0ea7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:29, skipping insertion in model container [2024-11-23 01:58:29,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:28" (2/3) ... [2024-11-23 01:58:29,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0ea7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:29, skipping insertion in model container [2024-11-23 01:58:29,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:29" (3/3) ... [2024-11-23 01:58:29,390 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-23 01:58:29,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:58:29,420 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-23 01:58:29,421 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:58:29,513 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 01:58:29,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-11-23 01:58:29,643 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-11-23 01:58:29,647 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 01:58:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-11-23 01:58:29,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-11-23 01:58:29,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-11-23 01:58:29,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:58:29,711 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;@10db2e14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:58:29,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-11-23 01:58:29,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:58:29,717 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:58:29,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:58:29,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:29,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:58:29,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:29,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1091473, now seen corresponding path program 1 times [2024-11-23 01:58:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:29,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940947673] [2024-11-23 01:58:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:29,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940947673] [2024-11-23 01:58:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940947673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:29,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:58:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226053883] [2024-11-23 01:58:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:29,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:29,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:30,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-23 01:58:30,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-23 01:58:30,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:30,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-23 01:58:30,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:31,995 INFO L124 PetriNetUnfolderBase]: 10484/18132 cut-off events. [2024-11-23 01:58:31,995 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2024-11-23 01:58:32,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33028 conditions, 18132 events. 10484/18132 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148660 event pairs, 8602 based on Foata normal form. 941/12136 useless extension candidates. Maximal degree in co-relation 31779. Up to 14417 conditions per place. [2024-11-23 01:58:32,098 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-23 01:58:32,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2024-11-23 01:58:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-11-23 01:58:32,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-11-23 01:58:32,113 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2024-11-23 01:58:32,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2024-11-23 01:58:32,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:58:32,122 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2024-11-23 01:58:32,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-11-23 01:58:32,127 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-11-23 01:58:32,128 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2024-11-23 01:58:32,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-23 01:58:32,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:32,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:58:32,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:58:32,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:32,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:32,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1842604543, now seen corresponding path program 1 times [2024-11-23 01:58:32,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:32,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617275358] [2024-11-23 01:58:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617275358] [2024-11-23 01:58:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617275358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349493010] [2024-11-23 01:58:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:32,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:32,250 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) [2024-11-23 01:58:32,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:58:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:32,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:32,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:32,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:58:32,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349493010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:32,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:58:32,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:58:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390914720] [2024-11-23 01:58:32,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:32,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:58:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:58:32,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:58:32,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-23 01:58:32,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-23 01:58:32,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:32,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-23 01:58:32,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:34,161 INFO L124 PetriNetUnfolderBase]: 10484/18130 cut-off events. [2024-11-23 01:58:34,161 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-23 01:58:34,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32877 conditions, 18130 events. 10484/18130 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148872 event pairs, 8602 based on Foata normal form. 2/11198 useless extension candidates. Maximal degree in co-relation 32827. Up to 14407 conditions per place. [2024-11-23 01:58:34,258 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-23 01:58:34,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2024-11-23 01:58:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-11-23 01:58:34,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-23 01:58:34,268 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2024-11-23 01:58:34,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2024-11-23 01:58:34,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:34,273 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2024-11-23 01:58:34,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-11-23 01:58:34,275 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2024-11-23 01:58:34,275 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2024-11-23 01:58:34,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-23 01:58:34,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:34,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:58:34,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 01:58:34,476 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 [2024-11-23 01:58:34,477 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:34,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1286164917, now seen corresponding path program 1 times [2024-11-23 01:58:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81478745] [2024-11-23 01:58:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81478745] [2024-11-23 01:58:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81478745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799194419] [2024-11-23 01:58:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:34,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:34,584 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) [2024-11-23 01:58:34,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:58:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:34,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:34,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:34,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:58:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799194419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:58:34,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:58:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:58:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760783077] [2024-11-23 01:58:34,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:58:34,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:58:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:34,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:58:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:58:34,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-23 01:58:34,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-11-23 01:58:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-23 01:58:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:37,134 INFO L124 PetriNetUnfolderBase]: 10490/18154 cut-off events. [2024-11-23 01:58:37,134 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-23 01:58:37,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32971 conditions, 18154 events. 10490/18154 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149062 event pairs, 8602 based on Foata normal form. 6/11225 useless extension candidates. Maximal degree in co-relation 32829. Up to 14418 conditions per place. [2024-11-23 01:58:37,381 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-23 01:58:37,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2024-11-23 01:58:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:58:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:58:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-11-23 01:58:37,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-11-23 01:58:37,384 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2024-11-23 01:58:37,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2024-11-23 01:58:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-23 01:58:37,581 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2024-11-23 01:58:37,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-23 01:58:37,582 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-11-23 01:58:37,586 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2024-11-23 01:58:37,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-11-23 01:58:37,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:37,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:37,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:58:37,787 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 [2024-11-23 01:58:37,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:37,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898327, now seen corresponding path program 1 times [2024-11-23 01:58:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531970314] [2024-11-23 01:58:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:37,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531970314] [2024-11-23 01:58:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531970314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997860764] [2024-11-23 01:58:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:37,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:37,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-23 01:58:37,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-23 01:58:37,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:37,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-23 01:58:37,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:39,102 INFO L124 PetriNetUnfolderBase]: 10490/18170 cut-off events. [2024-11-23 01:58:39,103 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-23 01:58:39,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33040 conditions, 18170 events. 10490/18170 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149066 event pairs, 8602 based on Foata normal form. 4/11241 useless extension candidates. Maximal degree in co-relation 32947. Up to 14433 conditions per place. [2024-11-23 01:58:39,200 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-23 01:58:39,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2024-11-23 01:58:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:58:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:58:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-23 01:58:39,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-11-23 01:58:39,203 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2024-11-23 01:58:39,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2024-11-23 01:58:39,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 01:58:39,206 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2024-11-23 01:58:39,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-23 01:58:39,207 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-11-23 01:58:39,207 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2024-11-23 01:58:39,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-23 01:58:39,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:39,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:58:39,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:39,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash -329465447, now seen corresponding path program 1 times [2024-11-23 01:58:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621624167] [2024-11-23 01:58:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:58:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621624167] [2024-11-23 01:58:39,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621624167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 01:58:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588601891] [2024-11-23 01:58:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:39,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:58:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:58:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:58:39,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-11-23 01:58:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-11-23 01:58:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-11-23 01:58:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:41,738 INFO L124 PetriNetUnfolderBase]: 17375/29213 cut-off events. [2024-11-23 01:58:41,739 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-11-23 01:58:41,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53835 conditions, 29213 events. 17375/29213 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 241275 event pairs, 12164 based on Foata normal form. 0/18959 useless extension candidates. Maximal degree in co-relation 53750. Up to 15572 conditions per place. [2024-11-23 01:58:41,905 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 171 selfloop transitions, 12 changer transitions 0/210 dead transitions. [2024-11-23 01:58:41,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 980 flow [2024-11-23 01:58:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-11-23 01:58:41,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-23 01:58:41,908 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 6 states and 354 transitions. [2024-11-23 01:58:41,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 980 flow [2024-11-23 01:58:41,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 976 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 01:58:41,914 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 443 flow [2024-11-23 01:58:41,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-11-23 01:58:41,915 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-11-23 01:58:41,916 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 443 flow [2024-11-23 01:58:41,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-11-23 01:58:41,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:41,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:41,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:58:41,916 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:41,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1623494332, now seen corresponding path program 1 times [2024-11-23 01:58:41,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:41,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090128965] [2024-11-23 01:58:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:58:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090128965] [2024-11-23 01:58:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090128965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:41,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370399376] [2024-11-23 01:58:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:41,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:42,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-11-23 01:58:42,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-11-23 01:58:42,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:42,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-11-23 01:58:42,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:46,500 INFO L124 PetriNetUnfolderBase]: 31437/51477 cut-off events. [2024-11-23 01:58:46,500 INFO L125 PetriNetUnfolderBase]: For 6035/6451 co-relation queries the response was YES. [2024-11-23 01:58:46,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102654 conditions, 51477 events. 31437/51477 cut-off events. For 6035/6451 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 430220 event pairs, 17008 based on Foata normal form. 1044/35531 useless extension candidates. Maximal degree in co-relation 102557. Up to 26896 conditions per place. [2024-11-23 01:58:46,845 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-11-23 01:58:46,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 945 flow [2024-11-23 01:58:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-11-23 01:58:46,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-23 01:58:46,846 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 443 flow. Second operand 4 states and 256 transitions. [2024-11-23 01:58:46,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 945 flow [2024-11-23 01:58:46,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 929 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:58:46,869 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 470 flow [2024-11-23 01:58:46,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-23 01:58:46,870 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 19 predicate places. [2024-11-23 01:58:46,870 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 470 flow [2024-11-23 01:58:46,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-11-23 01:58:46,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:46,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:46,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:58:46,871 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:46,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977136, now seen corresponding path program 1 times [2024-11-23 01:58:46,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:46,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560050181] [2024-11-23 01:58:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:58:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560050181] [2024-11-23 01:58:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560050181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:58:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63133640] [2024-11-23 01:58:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:47,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:58:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:58:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:58:47,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-23 01:58:47,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-23 01:58:47,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:47,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-23 01:58:47,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:53,833 INFO L124 PetriNetUnfolderBase]: 44277/74188 cut-off events. [2024-11-23 01:58:53,833 INFO L125 PetriNetUnfolderBase]: For 26446/28463 co-relation queries the response was YES. [2024-11-23 01:58:54,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156664 conditions, 74188 events. 44277/74188 cut-off events. For 26446/28463 co-relation queries the response was YES. Maximal size of possible extension queue 2602. Compared 668413 event pairs, 13958 based on Foata normal form. 937/51487 useless extension candidates. Maximal degree in co-relation 156566. Up to 39187 conditions per place. [2024-11-23 01:58:54,466 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 128 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-11-23 01:58:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 877 flow [2024-11-23 01:58:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:58:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:58:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-11-23 01:58:54,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-11-23 01:58:54,468 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 470 flow. Second operand 3 states and 195 transitions. [2024-11-23 01:58:54,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 877 flow [2024-11-23 01:58:54,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:58:54,504 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 492 flow [2024-11-23 01:58:54,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-11-23 01:58:54,505 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-11-23 01:58:54,505 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 492 flow [2024-11-23 01:58:54,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-23 01:58:54,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:54,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:54,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:58:54,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:58:54,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977132, now seen corresponding path program 1 times [2024-11-23 01:58:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802021268] [2024-11-23 01:58:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:54,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802021268] [2024-11-23 01:58:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802021268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845103214] [2024-11-23 01:58:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:54,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:54,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:58:54,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:58:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:54,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 01:58:54,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:54,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:58:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845103214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:58:55,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:58:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-23 01:58:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336977583] [2024-11-23 01:58:55,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:58:55,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 01:58:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 01:58:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-23 01:58:55,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-23 01:58:55,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 492 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2024-11-23 01:58:55,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:55,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-23 01:58:55,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:03,333 INFO L124 PetriNetUnfolderBase]: 54138/91002 cut-off events. [2024-11-23 01:59:03,334 INFO L125 PetriNetUnfolderBase]: For 32550/34026 co-relation queries the response was YES. [2024-11-23 01:59:03,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200359 conditions, 91002 events. 54138/91002 cut-off events. For 32550/34026 co-relation queries the response was YES. Maximal size of possible extension queue 3045. Compared 839518 event pairs, 39554 based on Foata normal form. 1188/68022 useless extension candidates. Maximal degree in co-relation 200227. Up to 60456 conditions per place. [2024-11-23 01:59:04,129 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 150 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-11-23 01:59:04,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1297 flow [2024-11-23 01:59:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 01:59:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 01:59:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2024-11-23 01:59:04,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2024-11-23 01:59:04,132 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 492 flow. Second operand 13 states and 516 transitions. [2024-11-23 01:59:04,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1297 flow [2024-11-23 01:59:04,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:59:04,202 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 755 flow [2024-11-23 01:59:04,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=755, PETRI_PLACES=128, PETRI_TRANSITIONS=137} [2024-11-23 01:59:04,203 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2024-11-23 01:59:04,203 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 755 flow [2024-11-23 01:59:04,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2024-11-23 01:59:04,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:04,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:04,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 01:59:04,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:04,404 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-23 01:59:04,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -377384081, now seen corresponding path program 1 times [2024-11-23 01:59:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622932124] [2024-11-23 01:59:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:04,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:59:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622932124] [2024-11-23 01:59:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622932124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456126958] [2024-11-23 01:59:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:04,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:04,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:59:04,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:59:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:04,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 01:59:04,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:04,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-23 01:59:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:59:04,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:59:04,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-23 01:59:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:59:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456126958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:59:04,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:59:04,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-23 01:59:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975312531] [2024-11-23 01:59:04,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:59:04,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:59:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:59:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:59:05,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2024-11-23 01:59:05,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 137 transitions, 755 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 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) [2024-11-23 01:59:05,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:05,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2024-11-23 01:59:05,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand