./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:49:28,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:49:28,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:49:29,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:49:29,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:49:29,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:49:29,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:49:29,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:49:29,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:49:29,043 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:49:29,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:49:29,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:49:29,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:49:29,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:49:29,046 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:49:29,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:49:29,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:49:29,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:49:29,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:49:29,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:49:29,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:49:29,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:49:29,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:49:29,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:49:29,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:49:29,053 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:49:29,053 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:49:29,054 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:49:29,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:49:29,054 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:49:29,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:49:29,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:49:29,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:49:29,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:49:29,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:29,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:49:29,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:49:29,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:49:29,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:49:29,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:49:29,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:49:29,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:49:29,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:49:29,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:49:29,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-10-13 16:49:29,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:49:29,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:49:29,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:49:29,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:49:29,337 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:49:29,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-10-13 16:49:30,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:49:31,021 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:49:31,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-10-13 16:49:31,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15994d855/baf601c3991f4c859ed2ae88326e83f6/FLAG113695c40 [2024-10-13 16:49:31,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15994d855/baf601c3991f4c859ed2ae88326e83f6 [2024-10-13 16:49:31,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:49:31,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:49:31,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:31,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:49:31,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:49:31,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721065aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31, skipping insertion in model container [2024-10-13 16:49:31,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:49:31,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:31,311 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:49:31,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:31,361 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:49:31,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31 WrapperNode [2024-10-13 16:49:31,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:31,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:31,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:49:31,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:49:31,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,415 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 349 [2024-10-13 16:49:31,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:31,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:49:31,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:49:31,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:49:31,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,453 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-13 16:49:31,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:49:31,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:49:31,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:49:31,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:49:31,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (1/1) ... [2024-10-13 16:49:31,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:31,517 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) [2024-10-13 16:49:31,520 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 [2024-10-13 16:49:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:49:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:49:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:49:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:49:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:49:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:49:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:49:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:49:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:49:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:49:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:49:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:49:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:49:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:49:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:49:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:49:31,566 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:49:31,667 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:49:31,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:49:32,293 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:49:32,293 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:49:32,640 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:49:32,641 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 16:49:32,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:32 BoogieIcfgContainer [2024-10-13 16:49:32,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:49:32,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:49:32,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:49:32,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:49:32,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:49:31" (1/3) ... [2024-10-13 16:49:32,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd25dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:32, skipping insertion in model container [2024-10-13 16:49:32,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:31" (2/3) ... [2024-10-13 16:49:32,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd25dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:32, skipping insertion in model container [2024-10-13 16:49:32,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:32" (3/3) ... [2024-10-13 16:49:32,654 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-10-13 16:49:32,673 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:49:32,673 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-10-13 16:49:32,673 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:49:32,749 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:49:32,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 143 transitions, 307 flow [2024-10-13 16:49:32,841 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2024-10-13 16:49:32,844 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:49:32,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 16/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 483 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-10-13 16:49:32,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 143 transitions, 307 flow [2024-10-13 16:49:32,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 296 flow [2024-10-13 16:49:32,868 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:49:32,876 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;@72a12b72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:49:32,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-10-13 16:49:32,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:49:32,879 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:49:32,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:49:32,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:32,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:49:32,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:32,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1085042, now seen corresponding path program 1 times [2024-10-13 16:49:32,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601752298] [2024-10-13 16:49:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601752298] [2024-10-13 16:49:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601752298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:33,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:33,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514108380] [2024-10-13 16:49:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:33,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:33,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:33,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-10-13 16:49:33,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:33,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:33,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:34,817 INFO L124 PetriNetUnfolderBase]: 6001/13087 cut-off events. [2024-10-13 16:49:34,818 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-13 16:49:34,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 13087 events. 6001/13087 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123416 event pairs, 3915 based on Foata normal form. 3/10275 useless extension candidates. Maximal degree in co-relation 20174. Up to 7899 conditions per place. [2024-10-13 16:49:34,999 INFO L140 encePairwiseOnDemand]: 127/143 looper letters, 61 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2024-10-13 16:49:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 456 flow [2024-10-13 16:49:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-10-13 16:49:35,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6940559440559441 [2024-10-13 16:49:35,017 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 296 flow. Second operand 4 states and 397 transitions. [2024-10-13 16:49:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 456 flow [2024-10-13 16:49:35,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 444 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:49:35,028 INFO L231 Difference]: Finished difference. Result has 133 places, 148 transitions, 372 flow [2024-10-13 16:49:35,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=133, PETRI_TRANSITIONS=148} [2024-10-13 16:49:35,036 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2024-10-13 16:49:35,037 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 148 transitions, 372 flow [2024-10-13 16:49:35,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-10-13 16:49:35,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:35,037 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:49:35,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:49:35,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:35,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2034141157, now seen corresponding path program 1 times [2024-10-13 16:49:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:35,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145188850] [2024-10-13 16:49:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145188850] [2024-10-13 16:49:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145188850] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029937791] [2024-10-13 16:49:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:35,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:35,175 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) [2024-10-13 16:49:35,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:49:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:35,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029937791] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:49:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762302612] [2024-10-13 16:49:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:35,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:35,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:35,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:35,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 148 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2024-10-13 16:49:35,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:35,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:36,628 INFO L124 PetriNetUnfolderBase]: 6001/13084 cut-off events. [2024-10-13 16:49:36,628 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-13 16:49:36,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21095 conditions, 13084 events. 6001/13084 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123544 event pairs, 3915 based on Foata normal form. 3/10277 useless extension candidates. Maximal degree in co-relation 21022. Up to 7884 conditions per place. [2024-10-13 16:49:36,723 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 51 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-10-13 16:49:36,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 145 transitions, 496 flow [2024-10-13 16:49:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2024-10-13 16:49:36,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6421911421911422 [2024-10-13 16:49:36,736 INFO L175 Difference]: Start difference. First operand has 133 places, 148 transitions, 372 flow. Second operand 6 states and 551 transitions. [2024-10-13 16:49:36,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 145 transitions, 496 flow [2024-10-13 16:49:36,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:36,742 INFO L231 Difference]: Finished difference. Result has 135 places, 145 transitions, 394 flow [2024-10-13 16:49:36,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=135, PETRI_TRANSITIONS=145} [2024-10-13 16:49:36,747 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2024-10-13 16:49:36,747 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 145 transitions, 394 flow [2024-10-13 16:49:36,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2024-10-13 16:49:36,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:36,748 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:49:36,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:36,953 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 [2024-10-13 16:49:36,954 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:36,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1366134692, now seen corresponding path program 1 times [2024-10-13 16:49:36,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264580788] [2024-10-13 16:49:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264580788] [2024-10-13 16:49:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264580788] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674053728] [2024-10-13 16:49:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:37,083 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) [2024-10-13 16:49:37,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:49:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:37,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:37,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674053728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:37,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:49:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505725456] [2024-10-13 16:49:37,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:37,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:37,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:37,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 145 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2024-10-13 16:49:37,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:37,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:37,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:38,711 INFO L124 PetriNetUnfolderBase]: 6010/13120 cut-off events. [2024-10-13 16:49:38,711 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-10-13 16:49:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21236 conditions, 13120 events. 6010/13120 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123835 event pairs, 3915 based on Foata normal form. 9/10319 useless extension candidates. Maximal degree in co-relation 21024. Up to 7899 conditions per place. [2024-10-13 16:49:38,796 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 58 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-10-13 16:49:38,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 172 transitions, 758 flow [2024-10-13 16:49:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 904 transitions. [2024-10-13 16:49:38,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6321678321678321 [2024-10-13 16:49:38,800 INFO L175 Difference]: Start difference. First operand has 135 places, 145 transitions, 394 flow. Second operand 10 states and 904 transitions. [2024-10-13 16:49:38,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 172 transitions, 758 flow [2024-10-13 16:49:38,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 675 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:38,811 INFO L231 Difference]: Finished difference. Result has 142 places, 172 transitions, 609 flow [2024-10-13 16:49:38,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=142, PETRI_TRANSITIONS=172} [2024-10-13 16:49:38,813 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2024-10-13 16:49:38,813 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 172 transitions, 609 flow [2024-10-13 16:49:38,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2024-10-13 16:49:38,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:38,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:38,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:49:39,018 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 [2024-10-13 16:49:39,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:39,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1124452014, now seen corresponding path program 1 times [2024-10-13 16:49:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059816931] [2024-10-13 16:49:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:39,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:39,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059816931] [2024-10-13 16:49:39,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059816931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:39,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:39,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:39,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654813251] [2024-10-13 16:49:39,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:39,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:39,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:39,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:39,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 172 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-10-13 16:49:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:41,099 INFO L124 PetriNetUnfolderBase]: 12094/21962 cut-off events. [2024-10-13 16:49:41,100 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-10-13 16:49:41,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38238 conditions, 21962 events. 12094/21962 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 191618 event pairs, 3873 based on Foata normal form. 544/18388 useless extension candidates. Maximal degree in co-relation 38140. Up to 7304 conditions per place. [2024-10-13 16:49:41,231 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 152 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2024-10-13 16:49:41,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 231 transitions, 1045 flow [2024-10-13 16:49:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-10-13 16:49:41,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7762237762237763 [2024-10-13 16:49:41,233 INFO L175 Difference]: Start difference. First operand has 142 places, 172 transitions, 609 flow. Second operand 4 states and 444 transitions. [2024-10-13 16:49:41,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 231 transitions, 1045 flow [2024-10-13 16:49:41,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1008 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:41,241 INFO L231 Difference]: Finished difference. Result has 145 places, 174 transitions, 606 flow [2024-10-13 16:49:41,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=145, PETRI_TRANSITIONS=174} [2024-10-13 16:49:41,244 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2024-10-13 16:49:41,244 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 174 transitions, 606 flow [2024-10-13 16:49:41,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-10-13 16:49:41,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:41,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:41,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:49:41,245 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:41,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -498272856, now seen corresponding path program 1 times [2024-10-13 16:49:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775585344] [2024-10-13 16:49:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775585344] [2024-10-13 16:49:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775585344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:41,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636155143] [2024-10-13 16:49:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:41,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:41,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-10-13 16:49:41,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 174 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2024-10-13 16:49:41,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:41,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-10-13 16:49:41,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:42,970 INFO L124 PetriNetUnfolderBase]: 9318/20210 cut-off events. [2024-10-13 16:49:42,970 INFO L125 PetriNetUnfolderBase]: For 3068/3448 co-relation queries the response was YES. [2024-10-13 16:49:43,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34796 conditions, 20210 events. 9318/20210 cut-off events. For 3068/3448 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 196513 event pairs, 5688 based on Foata normal form. 463/16896 useless extension candidates. Maximal degree in co-relation 34643. Up to 9525 conditions per place. [2024-10-13 16:49:43,099 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 167 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-10-13 16:49:43,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 1319 flow [2024-10-13 16:49:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2024-10-13 16:49:43,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7703962703962703 [2024-10-13 16:49:43,102 INFO L175 Difference]: Start difference. First operand has 145 places, 174 transitions, 606 flow. Second operand 6 states and 661 transitions. [2024-10-13 16:49:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 1319 flow [2024-10-13 16:49:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1319 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:43,127 INFO L231 Difference]: Finished difference. Result has 153 places, 184 transitions, 740 flow [2024-10-13 16:49:43,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=153, PETRI_TRANSITIONS=184} [2024-10-13 16:49:43,129 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 20 predicate places. [2024-10-13 16:49:43,130 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 184 transitions, 740 flow [2024-10-13 16:49:43,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2024-10-13 16:49:43,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:43,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:43,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:49:43,131 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:43,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -209031877, now seen corresponding path program 1 times [2024-10-13 16:49:43,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:43,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031003667] [2024-10-13 16:49:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031003667] [2024-10-13 16:49:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031003667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:43,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:43,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:43,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344968101] [2024-10-13 16:49:43,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:43,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:43,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:43,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:43,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:43,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-10-13 16:49:43,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:43,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:45,938 INFO L124 PetriNetUnfolderBase]: 20139/36717 cut-off events. [2024-10-13 16:49:45,938 INFO L125 PetriNetUnfolderBase]: For 10366/10726 co-relation queries the response was YES. [2024-10-13 16:49:46,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72670 conditions, 36717 events. 20139/36717 cut-off events. For 10366/10726 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 334817 event pairs, 6781 based on Foata normal form. 1106/32499 useless extension candidates. Maximal degree in co-relation 72509. Up to 12828 conditions per place. [2024-10-13 16:49:46,452 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 170 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2024-10-13 16:49:46,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 1288 flow [2024-10-13 16:49:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2024-10-13 16:49:46,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-10-13 16:49:46,455 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 740 flow. Second operand 4 states and 442 transitions. [2024-10-13 16:49:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 1288 flow [2024-10-13 16:49:46,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 1284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:46,590 INFO L231 Difference]: Finished difference. Result has 158 places, 186 transitions, 770 flow [2024-10-13 16:49:46,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=158, PETRI_TRANSITIONS=186} [2024-10-13 16:49:46,591 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 25 predicate places. [2024-10-13 16:49:46,591 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 186 transitions, 770 flow [2024-10-13 16:49:46,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-10-13 16:49:46,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:46,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:46,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:49:46,593 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:46,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2109947640, now seen corresponding path program 1 times [2024-10-13 16:49:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:46,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473859680] [2024-10-13 16:49:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:46,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473859680] [2024-10-13 16:49:46,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473859680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:46,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:46,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:46,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187014935] [2024-10-13 16:49:46,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:46,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:46,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-10-13 16:49:46,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 186 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2024-10-13 16:49:46,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:46,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-10-13 16:49:46,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:48,620 INFO L124 PetriNetUnfolderBase]: 9892/21950 cut-off events. [2024-10-13 16:49:48,621 INFO L125 PetriNetUnfolderBase]: For 8580/9475 co-relation queries the response was YES. [2024-10-13 16:49:48,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41847 conditions, 21950 events. 9892/21950 cut-off events. For 8580/9475 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 223926 event pairs, 6612 based on Foata normal form. 569/18805 useless extension candidates. Maximal degree in co-relation 41683. Up to 12297 conditions per place. [2024-10-13 16:49:48,777 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 154 selfloop transitions, 24 changer transitions 0/258 dead transitions. [2024-10-13 16:49:48,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 258 transitions, 1384 flow [2024-10-13 16:49:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2024-10-13 16:49:48,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752913752913753 [2024-10-13 16:49:48,780 INFO L175 Difference]: Start difference. First operand has 158 places, 186 transitions, 770 flow. Second operand 6 states and 646 transitions. [2024-10-13 16:49:48,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 258 transitions, 1384 flow [2024-10-13 16:49:48,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 1384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:48,808 INFO L231 Difference]: Finished difference. Result has 165 places, 188 transitions, 840 flow [2024-10-13 16:49:48,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=165, PETRI_TRANSITIONS=188} [2024-10-13 16:49:48,809 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 32 predicate places. [2024-10-13 16:49:48,809 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 188 transitions, 840 flow [2024-10-13 16:49:48,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2024-10-13 16:49:48,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:48,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:48,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:49:48,810 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:48,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1930119192, now seen corresponding path program 1 times [2024-10-13 16:49:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708113223] [2024-10-13 16:49:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708113223] [2024-10-13 16:49:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708113223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:48,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:48,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365638772] [2024-10-13 16:49:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:48,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:48,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2024-10-13 16:49:48,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 188 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2024-10-13 16:49:48,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:48,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2024-10-13 16:49:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:52,386 INFO L124 PetriNetUnfolderBase]: 22898/41978 cut-off events. [2024-10-13 16:49:52,387 INFO L125 PetriNetUnfolderBase]: For 23550/25323 co-relation queries the response was YES. [2024-10-13 16:49:52,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91427 conditions, 41978 events. 22898/41978 cut-off events. For 23550/25323 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 397977 event pairs, 7161 based on Foata normal form. 2063/38697 useless extension candidates. Maximal degree in co-relation 91256. Up to 13115 conditions per place. [2024-10-13 16:49:52,666 INFO L140 encePairwiseOnDemand]: 128/143 looper letters, 174 selfloop transitions, 10 changer transitions 0/252 dead transitions. [2024-10-13 16:49:52,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 1468 flow [2024-10-13 16:49:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2024-10-13 16:49:52,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-10-13 16:49:52,667 INFO L175 Difference]: Start difference. First operand has 165 places, 188 transitions, 840 flow. Second operand 4 states and 418 transitions. [2024-10-13 16:49:52,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 1468 flow [2024-10-13 16:49:52,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 252 transitions, 1432 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:52,820 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 870 flow [2024-10-13 16:49:52,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=870, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2024-10-13 16:49:52,821 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 33 predicate places. [2024-10-13 16:49:52,821 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 870 flow [2024-10-13 16:49:52,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2024-10-13 16:49:52,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:52,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:52,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:49:52,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:52,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 295848452, now seen corresponding path program 1 times [2024-10-13 16:49:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311636395] [2024-10-13 16:49:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:52,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311636395] [2024-10-13 16:49:52,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311636395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:52,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206002667] [2024-10-13 16:49:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:52,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:52,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-10-13 16:49:52,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2024-10-13 16:49:52,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:52,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-10-13 16:49:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:55,461 INFO L124 PetriNetUnfolderBase]: 13897/29780 cut-off events. [2024-10-13 16:49:55,461 INFO L125 PetriNetUnfolderBase]: For 19440/21032 co-relation queries the response was YES. [2024-10-13 16:49:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65058 conditions, 29780 events. 13897/29780 cut-off events. For 19440/21032 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 314360 event pairs, 9776 based on Foata normal form. 847/27378 useless extension candidates. Maximal degree in co-relation 64888. Up to 17787 conditions per place. [2024-10-13 16:49:55,702 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 133 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-10-13 16:49:55,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 1396 flow [2024-10-13 16:49:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2024-10-13 16:49:55,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7237762237762237 [2024-10-13 16:49:55,705 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 870 flow. Second operand 6 states and 621 transitions. [2024-10-13 16:49:55,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 1396 flow [2024-10-13 16:49:55,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 1396 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:55,866 INFO L231 Difference]: Finished difference. Result has 173 places, 194 transitions, 940 flow [2024-10-13 16:49:55,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=173, PETRI_TRANSITIONS=194} [2024-10-13 16:49:55,867 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 40 predicate places. [2024-10-13 16:49:55,868 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 194 transitions, 940 flow [2024-10-13 16:49:55,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2024-10-13 16:49:55,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:55,868 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:49:55,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:49:55,869 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:49:55,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1375255917, now seen corresponding path program 2 times [2024-10-13 16:49:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274006311] [2024-10-13 16:49:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274006311] [2024-10-13 16:49:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274006311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:56,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55404009] [2024-10-13 16:49:56,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:56,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:56,203 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) [2024-10-13 16:49:56,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:49:56,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:56,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:56,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:49:56,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:56,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55404009] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:56,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:49:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415199056] [2024-10-13 16:49:56,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:56,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:49:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:49:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:49:56,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-10-13 16:49:56,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 194 transitions, 940 flow. Second operand has 14 states, 14 states have (on average 81.14285714285714) internal successors, (1136), 14 states have internal predecessors, (1136), 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) [2024-10-13 16:49:56,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:56,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-10-13 16:49:56,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:59,537 INFO L124 PetriNetUnfolderBase]: 13985/30850 cut-off events. [2024-10-13 16:49:59,538 INFO L125 PetriNetUnfolderBase]: For 20712/22271 co-relation queries the response was YES. [2024-10-13 16:49:59,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67327 conditions, 30850 events. 13985/30850 cut-off events. For 20712/22271 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334609 event pairs, 9883 based on Foata normal form. 827/27922 useless extension candidates. Maximal degree in co-relation 67074. Up to 18145 conditions per place. [2024-10-13 16:49:59,816 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 69 selfloop transitions, 57 changer transitions 0/203 dead transitions. [2024-10-13 16:49:59,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 203 transitions, 1265 flow [2024-10-13 16:49:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:49:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:49:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2027 transitions. [2024-10-13 16:49:59,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906177156177156 [2024-10-13 16:49:59,821 INFO L175 Difference]: Start difference. First operand has 173 places, 194 transitions, 940 flow. Second operand 24 states and 2027 transitions. [2024-10-13 16:49:59,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 203 transitions, 1265 flow [2024-10-13 16:49:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 203 transitions, 1224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:59,955 INFO L231 Difference]: Finished difference. Result has 194 places, 203 transitions, 1111 flow [2024-10-13 16:49:59,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1111, PETRI_PLACES=194, PETRI_TRANSITIONS=203} [2024-10-13 16:49:59,956 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 61 predicate places. [2024-10-13 16:49:59,956 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 203 transitions, 1111 flow [2024-10-13 16:49:59,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.14285714285714) internal successors, (1136), 14 states have internal predecessors, (1136), 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) [2024-10-13 16:49:59,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:59,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:59,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:50:00,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:50:00,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:00,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1529307364, now seen corresponding path program 1 times [2024-10-13 16:50:00,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:00,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882338389] [2024-10-13 16:50:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882338389] [2024-10-13 16:50:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882338389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672579233] [2024-10-13 16:50:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:00,758 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) [2024-10-13 16:50:00,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:50:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 16:50:00,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:00,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:50:00,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:00,971 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-13 16:50:00,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-13 16:50:01,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:50:01,045 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:50:01,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:50:01,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:50:01,129 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 17 treesize of output 9 [2024-10-13 16:50:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:01,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:01,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:01,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-10-13 16:50:01,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:01,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2024-10-13 16:50:01,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 52 [2024-10-13 16:50:01,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 24 [2024-10-13 16:50:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672579233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:01,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:01,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-10-13 16:50:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100611983] [2024-10-13 16:50:01,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:01,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 16:50:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 16:50:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=500, Unknown=6, NotChecked=0, Total=600 [2024-10-13 16:50:05,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:09,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:14,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:18,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:18,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2024-10-13 16:50:18,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 203 transitions, 1111 flow. Second operand has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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) [2024-10-13 16:50:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:18,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2024-10-13 16:50:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:28,058 INFO L124 PetriNetUnfolderBase]: 59475/91845 cut-off events. [2024-10-13 16:50:28,058 INFO L125 PetriNetUnfolderBase]: For 71972/79286 co-relation queries the response was YES. [2024-10-13 16:50:28,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231263 conditions, 91845 events. 59475/91845 cut-off events. For 71972/79286 co-relation queries the response was YES. Maximal size of possible extension queue 2736. Compared 768043 event pairs, 12789 based on Foata normal form. 3751/89068 useless extension candidates. Maximal degree in co-relation 231049. Up to 28504 conditions per place. [2024-10-13 16:50:29,065 INFO L140 encePairwiseOnDemand]: 124/143 looper letters, 297 selfloop transitions, 53 changer transitions 0/420 dead transitions. [2024-10-13 16:50:29,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 420 transitions, 2797 flow [2024-10-13 16:50:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:50:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:50:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1247 transitions. [2024-10-13 16:50:29,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707907477138246 [2024-10-13 16:50:29,070 INFO L175 Difference]: Start difference. First operand has 194 places, 203 transitions, 1111 flow. Second operand 13 states and 1247 transitions. [2024-10-13 16:50:29,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 420 transitions, 2797 flow [2024-10-13 16:50:29,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 420 transitions, 2627 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-10-13 16:50:29,624 INFO L231 Difference]: Finished difference. Result has 200 places, 223 transitions, 1259 flow [2024-10-13 16:50:29,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1259, PETRI_PLACES=200, PETRI_TRANSITIONS=223} [2024-10-13 16:50:29,625 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 67 predicate places. [2024-10-13 16:50:29,625 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 223 transitions, 1259 flow [2024-10-13 16:50:29,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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) [2024-10-13 16:50:29,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:29,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:29,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:50:29,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:29,832 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:50:29,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -163918590, now seen corresponding path program 1 times [2024-10-13 16:50:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:29,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853475119] [2024-10-13 16:50:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:30,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853475119] [2024-10-13 16:50:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853475119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669035513] [2024-10-13 16:50:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:30,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:30,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:30,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:50:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:30,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 16:50:30,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:30,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:50:30,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:30,414 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-13 16:50:30,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-13 16:50:30,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:50:30,490 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:50:30,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:50:30,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:50:30,567 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 15 treesize of output 7 [2024-10-13 16:50:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:30,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:30,659 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_147 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_147) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2024-10-13 16:50:30,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:30,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-10-13 16:50:30,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:30,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2024-10-13 16:50:30,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 [2024-10-13 16:50:30,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-10-13 16:50:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-13 16:50:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669035513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:31,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:31,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-10-13 16:50:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487426398] [2024-10-13 16:50:31,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:31,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 16:50:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 16:50:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=459, Unknown=2, NotChecked=44, Total=600 [2024-10-13 16:50:31,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2024-10-13 16:50:31,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 223 transitions, 1259 flow. Second operand has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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) [2024-10-13 16:50:31,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:31,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2024-10-13 16:50:31,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand