./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:50:25,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:50:25,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:50:25,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:50:25,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:50:25,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:50:25,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:50:25,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:50:25,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:50:25,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:50:25,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:50:25,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:50:25,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:50:25,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:50:25,646 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:50:25,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:50:25,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:50:25,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:50:25,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:50:25,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:50:25,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:50:25,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:50:25,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:50:25,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:50:25,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:50:25,652 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:50:25,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:50:25,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:50:25,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:50:25,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:50:25,653 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:50:25,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:50:25,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:50:25,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:50:25,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:50:25,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:50:25,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:50:25,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:50:25,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:50:25,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:50:25,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:50:25,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:50:25,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:50:25,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:50:25,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-11-17 07:50:25,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:50:25,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:50:25,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:50:25,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:50:25,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:50:25,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-17 07:50:27,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:50:27,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:50:27,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-17 07:50:27,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828feb3c2/db69a594667c49409949a4a5f035b7d3/FLAG3318eb47b [2024-11-17 07:50:27,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828feb3c2/db69a594667c49409949a4a5f035b7d3 [2024-11-17 07:50:27,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:50:27,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:50:27,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:50:27,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:50:27,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:50:27,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:50:27" (1/1) ... [2024-11-17 07:50:27,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b772eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:27, skipping insertion in model container [2024-11-17 07:50:27,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:50:27" (1/1) ... [2024-11-17 07:50:27,805 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:50:28,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:50:28,037 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:50:28,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:50:28,086 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:50:28,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28 WrapperNode [2024-11-17 07:50:28,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:50:28,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:50:28,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:50:28,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:50:28,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,137 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 326 [2024-11-17 07:50:28,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:50:28,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:50:28,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:50:28,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:50:28,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,181 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-17 07:50:28,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,190 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:50:28,199 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:50:28,199 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:50:28,199 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:50:28,200 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (1/1) ... [2024-11-17 07:50:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:50:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:28,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:50:28,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:50:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:50:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:50:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:50:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:50:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:50:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:50:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:50:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:50:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:50:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:50:28,295 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:50:28,400 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:50:28,403 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:50:29,067 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:50:29,068 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:50:29,353 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:50:29,354 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:50:29,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:29 BoogieIcfgContainer [2024-11-17 07:50:29,354 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:50:29,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:50:29,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:50:29,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:50:29,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:50:27" (1/3) ... [2024-11-17 07:50:29,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db9d96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:29, skipping insertion in model container [2024-11-17 07:50:29,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:28" (2/3) ... [2024-11-17 07:50:29,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db9d96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:29, skipping insertion in model container [2024-11-17 07:50:29,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:29" (3/3) ... [2024-11-17 07:50:29,367 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-11-17 07:50:29,387 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:50:29,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-11-17 07:50:29,388 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:50:29,491 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:50:29,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 143 transitions, 307 flow [2024-11-17 07:50:29,642 INFO L124 PetriNetUnfolderBase]: 21/140 cut-off events. [2024-11-17 07:50:29,644 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:50:29,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 21/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 515 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2024-11-17 07:50:29,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 143 transitions, 307 flow [2024-11-17 07:50:29,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 291 flow [2024-11-17 07:50:29,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:50:29,682 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;@3ba62a38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:50:29,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-11-17 07:50:29,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:50:29,685 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:50:29,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:50:29,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:29,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:50:29,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:29,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 28728271, now seen corresponding path program 1 times [2024-11-17 07:50:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565922422] [2024-11-17 07:50:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:30,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565922422] [2024-11-17 07:50:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565922422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:30,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:30,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:50:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826480452] [2024-11-17 07:50:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:30,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:30,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2024-11-17 07:50:30,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:30,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:30,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2024-11-17 07:50:30,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:32,356 INFO L124 PetriNetUnfolderBase]: 9741/19745 cut-off events. [2024-11-17 07:50:32,356 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-11-17 07:50:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32928 conditions, 19745 events. 9741/19745 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 187906 event pairs, 6275 based on Foata normal form. 741/16617 useless extension candidates. Maximal degree in co-relation 31722. Up to 12800 conditions per place. [2024-11-17 07:50:32,604 INFO L140 encePairwiseOnDemand]: 121/143 looper letters, 59 selfloop transitions, 10 changer transitions 0/141 dead transitions. [2024-11-17 07:50:32,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 141 transitions, 435 flow [2024-11-17 07:50:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2024-11-17 07:50:32,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6713286713286714 [2024-11-17 07:50:32,624 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 291 flow. Second operand 4 states and 384 transitions. [2024-11-17 07:50:32,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 141 transitions, 435 flow [2024-11-17 07:50:32,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 141 transitions, 426 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:50:32,637 INFO L231 Difference]: Finished difference. Result has 128 places, 141 transitions, 358 flow [2024-11-17 07:50:32,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=128, PETRI_TRANSITIONS=141} [2024-11-17 07:50:32,645 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 1 predicate places. [2024-11-17 07:50:32,646 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 141 transitions, 358 flow [2024-11-17 07:50:32,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:32,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:32,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:50:32,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:50:32,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:32,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:32,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1174681462, now seen corresponding path program 1 times [2024-11-17 07:50:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:32,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644326874] [2024-11-17 07:50:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644326874] [2024-11-17 07:50:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644326874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791856678] [2024-11-17 07:50:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:32,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:32,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:32,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:50:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:32,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:32,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:32,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:50:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791856678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:32,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:50:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:50:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216453254] [2024-11-17 07:50:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:50:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:50:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:50:32,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2024-11-17 07:50:32,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:32,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:32,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2024-11-17 07:50:32,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:34,919 INFO L124 PetriNetUnfolderBase]: 9741/19742 cut-off events. [2024-11-17 07:50:34,920 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-17 07:50:34,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32819 conditions, 19742 events. 9741/19742 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 187820 event pairs, 6275 based on Foata normal form. 3/15876 useless extension candidates. Maximal degree in co-relation 32740. Up to 12785 conditions per place. [2024-11-17 07:50:35,182 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 49 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2024-11-17 07:50:35,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 138 transitions, 478 flow [2024-11-17 07:50:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:50:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:50:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2024-11-17 07:50:35,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048951048951049 [2024-11-17 07:50:35,187 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 358 flow. Second operand 6 states and 519 transitions. [2024-11-17 07:50:35,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 138 transitions, 478 flow [2024-11-17 07:50:35,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:50:35,196 INFO L231 Difference]: Finished difference. Result has 130 places, 138 transitions, 380 flow [2024-11-17 07:50:35,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=380, PETRI_PLACES=130, PETRI_TRANSITIONS=138} [2024-11-17 07:50:35,198 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2024-11-17 07:50:35,199 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 138 transitions, 380 flow [2024-11-17 07:50:35,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:35,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:35,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:50:35,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:50:35,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:35,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:35,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2055387800, now seen corresponding path program 1 times [2024-11-17 07:50:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302046045] [2024-11-17 07:50:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302046045] [2024-11-17 07:50:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302046045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094816232] [2024-11-17 07:50:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:35,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:35,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:50:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:35,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:35,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:35,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094816232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:35,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:50:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43880111] [2024-11-17 07:50:35,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:35,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:50:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:50:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:50:35,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2024-11-17 07:50:35,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 138 transitions, 380 flow. Second operand has 12 states, 12 states have (on average 76.08333333333333) internal successors, (913), 12 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:35,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:35,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2024-11-17 07:50:35,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:37,589 INFO L124 PetriNetUnfolderBase]: 9750/19796 cut-off events. [2024-11-17 07:50:37,590 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-17 07:50:37,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32978 conditions, 19796 events. 9750/19796 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 188341 event pairs, 6275 based on Foata normal form. 9/15939 useless extension candidates. Maximal degree in co-relation 32742. Up to 12800 conditions per place. [2024-11-17 07:50:37,742 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 56 selfloop transitions, 37 changer transitions 0/165 dead transitions. [2024-11-17 07:50:37,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 165 transitions, 740 flow [2024-11-17 07:50:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:50:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:50:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 852 transitions. [2024-11-17 07:50:37,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958041958041959 [2024-11-17 07:50:37,745 INFO L175 Difference]: Start difference. First operand has 130 places, 138 transitions, 380 flow. Second operand 10 states and 852 transitions. [2024-11-17 07:50:37,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 165 transitions, 740 flow [2024-11-17 07:50:37,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 165 transitions, 657 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-17 07:50:37,755 INFO L231 Difference]: Finished difference. Result has 137 places, 165 transitions, 595 flow [2024-11-17 07:50:37,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=595, PETRI_PLACES=137, PETRI_TRANSITIONS=165} [2024-11-17 07:50:37,758 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 10 predicate places. [2024-11-17 07:50:37,758 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 165 transitions, 595 flow [2024-11-17 07:50:37,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 76.08333333333333) internal successors, (913), 12 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:37,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:37,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:37,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:50:37,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-17 07:50:37,966 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:37,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -209945007, now seen corresponding path program 1 times [2024-11-17 07:50:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:37,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485800849] [2024-11-17 07:50:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:38,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485800849] [2024-11-17 07:50:38,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485800849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:50:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316268601] [2024-11-17 07:50:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:38,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:50:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:50:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:50:38,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2024-11-17 07:50:38,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 165 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2024-11-17 07:50:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:41,138 INFO L124 PetriNetUnfolderBase]: 21177/42809 cut-off events. [2024-11-17 07:50:41,138 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-11-17 07:50:41,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71314 conditions, 42809 events. 21177/42809 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 450689 event pairs, 13616 based on Foata normal form. 242/34604 useless extension candidates. Maximal degree in co-relation 71175. Up to 14007 conditions per place. [2024-11-17 07:50:41,443 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 147 selfloop transitions, 11 changer transitions 0/228 dead transitions. [2024-11-17 07:50:41,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 228 transitions, 1116 flow [2024-11-17 07:50:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:50:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:50:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2024-11-17 07:50:41,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2024-11-17 07:50:41,446 INFO L175 Difference]: Start difference. First operand has 137 places, 165 transitions, 595 flow. Second operand 7 states and 649 transitions. [2024-11-17 07:50:41,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 228 transitions, 1116 flow [2024-11-17 07:50:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 228 transitions, 1069 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-17 07:50:41,453 INFO L231 Difference]: Finished difference. Result has 145 places, 169 transitions, 621 flow [2024-11-17 07:50:41,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=145, PETRI_TRANSITIONS=169} [2024-11-17 07:50:41,455 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 18 predicate places. [2024-11-17 07:50:41,456 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 169 transitions, 621 flow [2024-11-17 07:50:41,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:41,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:41,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:41,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:50:41,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:41,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2081640260, now seen corresponding path program 1 times [2024-11-17 07:50:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509303744] [2024-11-17 07:50:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509303744] [2024-11-17 07:50:41,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509303744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:41,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:41,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:50:41,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438131654] [2024-11-17 07:50:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:41,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:50:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:50:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:50:41,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2024-11-17 07:50:41,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 169 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:41,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:41,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2024-11-17 07:50:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:47,887 INFO L124 PetriNetUnfolderBase]: 41520/83448 cut-off events. [2024-11-17 07:50:47,888 INFO L125 PetriNetUnfolderBase]: For 3229/3229 co-relation queries the response was YES. [2024-11-17 07:50:48,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140581 conditions, 83448 events. 41520/83448 cut-off events. For 3229/3229 co-relation queries the response was YES. Maximal size of possible extension queue 3377. Compared 951410 event pairs, 26178 based on Foata normal form. 482/68502 useless extension candidates. Maximal degree in co-relation 140346. Up to 26849 conditions per place. [2024-11-17 07:50:48,512 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 204 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2024-11-17 07:50:48,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 279 transitions, 1429 flow [2024-11-17 07:50:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:50:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:50:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 602 transitions. [2024-11-17 07:50:48,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7016317016317016 [2024-11-17 07:50:48,515 INFO L175 Difference]: Start difference. First operand has 145 places, 169 transitions, 621 flow. Second operand 6 states and 602 transitions. [2024-11-17 07:50:48,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 279 transitions, 1429 flow [2024-11-17 07:50:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 279 transitions, 1422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:50:48,524 INFO L231 Difference]: Finished difference. Result has 151 places, 171 transitions, 645 flow [2024-11-17 07:50:48,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=645, PETRI_PLACES=151, PETRI_TRANSITIONS=171} [2024-11-17 07:50:48,525 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 24 predicate places. [2024-11-17 07:50:48,525 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 171 transitions, 645 flow [2024-11-17 07:50:48,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:48,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:48,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:48,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:50:48,527 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:50:48,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash 104978793, now seen corresponding path program 1 times [2024-11-17 07:50:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435952568] [2024-11-17 07:50:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435952568] [2024-11-17 07:50:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435952568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:50:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985593242] [2024-11-17 07:50:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:48,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:50:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:48,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:50:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:50:48,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2024-11-17 07:50:48,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 171 transitions, 645 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:50:48,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:48,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2024-11-17 07:50:48,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:01,887 INFO L124 PetriNetUnfolderBase]: 84860/171246 cut-off events. [2024-11-17 07:51:01,888 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-11-17 07:51:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284990 conditions, 171246 events. 84860/171246 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 6550. Compared 2128468 event pairs, 54608 based on Foata normal form. 1004/138390 useless extension candidates. Maximal degree in co-relation 284752. Up to 56112 conditions per place. [2024-11-17 07:51:03,167 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 129 selfloop transitions, 16 changer transitions 0/217 dead transitions. [2024-11-17 07:51:03,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 217 transitions, 1033 flow [2024-11-17 07:51:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:51:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:51:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2024-11-17 07:51:03,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585081585081585 [2024-11-17 07:51:03,169 INFO L175 Difference]: Start difference. First operand has 151 places, 171 transitions, 645 flow. Second operand 6 states and 565 transitions. [2024-11-17 07:51:03,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 217 transitions, 1033 flow [2024-11-17 07:51:03,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1031 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 07:51:03,175 INFO L231 Difference]: Finished difference. Result has 159 places, 173 transitions, 709 flow [2024-11-17 07:51:03,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=159, PETRI_TRANSITIONS=173} [2024-11-17 07:51:03,176 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 32 predicate places. [2024-11-17 07:51:03,176 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 173 transitions, 709 flow [2024-11-17 07:51:03,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:03,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:03,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:03,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:51:03,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-11-17 07:51:03,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1040623794, now seen corresponding path program 1 times [2024-11-17 07:51:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057729205] [2024-11-17 07:51:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:51:03,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:03,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057729205] [2024-11-17 07:51:03,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057729205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:03,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:03,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:51:03,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113859099] [2024-11-17 07:51:03,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:03,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:51:03,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:51:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:51:03,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2024-11-17 07:51:03,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 173 transitions, 709 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:03,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:03,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2024-11-17 07:51:03,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand