./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-commit-1.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-commit-1.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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:49:31,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:49:31,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:49:31,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:49:31,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:49:31,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:49:31,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:49:31,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:49:31,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:49:31,661 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:49:31,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:49:31,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:49:31,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:49:31,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:49:31,663 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:49:31,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:49:31,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:49:31,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:49:31,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:49:31,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:49:31,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:49:31,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:49:31,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:49:31,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:49:31,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:49:31,668 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:49:31,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:49:31,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:49:31,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:49:31,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:49:31,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:49:31,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:49:31,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:49:31,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:49:31,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:31,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:49:31,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:49:31,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:49:31,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:49:31,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:49:31,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:49:31,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:49:31,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:49:31,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:49:31,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-10-13 16:49:31,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:49:31,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:49:31,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:49:31,987 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:49:31,988 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:49:31,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-13 16:49:33,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:49:33,671 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:49:33,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-13 16:49:33,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a9c42b6/122da37c2fa341239a0b38b6dea292f1/FLAGa67f2c77d [2024-10-13 16:49:33,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a9c42b6/122da37c2fa341239a0b38b6dea292f1 [2024-10-13 16:49:33,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:49:33,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:49:33,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:33,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:49:33,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:49:33,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c36bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33, skipping insertion in model container [2024-10-13 16:49:33,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:49:33,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:33,995 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:49:34,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:34,046 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:49:34,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34 WrapperNode [2024-10-13 16:49:34,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:34,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:34,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:49:34,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:49:34,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,101 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 361 [2024-10-13 16:49:34,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:34,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:49:34,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:49:34,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:49:34,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,124 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,146 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 16:49:34,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:49:34,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:49:34,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:49:34,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:49:34,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (1/1) ... [2024-10-13 16:49:34,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:34,212 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 16:49:34,216 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 16:49:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:49:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:49:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:49:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:49:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:49:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:49:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:49:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:49:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:49:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:49:34,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:49:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:49:34,261 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 16:49:34,377 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:49:34,380 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:49:34,875 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:49:34,875 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:49:35,385 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:49:35,387 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 16:49:35,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:35 BoogieIcfgContainer [2024-10-13 16:49:35,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:49:35,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:49:35,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:49:35,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:49:35,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:49:33" (1/3) ... [2024-10-13 16:49:35,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13314d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:35, skipping insertion in model container [2024-10-13 16:49:35,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:34" (2/3) ... [2024-10-13 16:49:35,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13314d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:35, skipping insertion in model container [2024-10-13 16:49:35,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:35" (3/3) ... [2024-10-13 16:49:35,401 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-10-13 16:49:35,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:49:35,420 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-13 16:49:35,420 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:49:35,522 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:49:35,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 169 flow [2024-10-13 16:49:35,609 INFO L124 PetriNetUnfolderBase]: 9/71 cut-off events. [2024-10-13 16:49:35,610 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:49:35,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 9/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-13 16:49:35,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 169 flow [2024-10-13 16:49:35,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 153 flow [2024-10-13 16:49:35,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:49:35,638 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;@1c08b143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:49:35,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-13 16:49:35,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:49:35,643 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:49:35,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:49:35,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:35,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:49:35,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:35,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1069047, now seen corresponding path program 1 times [2024-10-13 16:49:35,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:35,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320128216] [2024-10-13 16:49:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,940 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 16:49:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320128216] [2024-10-13 16:49:35,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320128216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:35,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:35,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:35,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289366861] [2024-10-13 16:49:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:35,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:36,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2024-10-13 16:49:36,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 16:49:36,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:36,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2024-10-13 16:49:36,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:37,287 INFO L124 PetriNetUnfolderBase]: 5880/8361 cut-off events. [2024-10-13 16:49:37,288 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-10-13 16:49:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17056 conditions, 8361 events. 5880/8361 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 43340 event pairs, 5179 based on Foata normal form. 3/5898 useless extension candidates. Maximal degree in co-relation 16379. Up to 8331 conditions per place. [2024-10-13 16:49:37,346 INFO L140 encePairwiseOnDemand]: 47/74 looper letters, 51 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-10-13 16:49:37,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 271 flow [2024-10-13 16:49:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-13 16:49:37,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38513513513513514 [2024-10-13 16:49:37,359 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 153 flow. Second operand 4 states and 114 transitions. [2024-10-13 16:49:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 271 flow [2024-10-13 16:49:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:37,371 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 210 flow [2024-10-13 16:49:37,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2024-10-13 16:49:37,376 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2024-10-13 16:49:37,377 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 210 flow [2024-10-13 16:49:37,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 16:49:37,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:37,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:49:37,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:49:37,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:37,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1784279074, now seen corresponding path program 1 times [2024-10-13 16:49:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:37,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070370939] [2024-10-13 16:49:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,559 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 16:49:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070370939] [2024-10-13 16:49:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070370939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474428348] [2024-10-13 16:49:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:37,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:37,563 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 16:49:37,565 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 16:49:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:37,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:37,728 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 16:49:37,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:37,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474428348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:37,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:37,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:49:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890846564] [2024-10-13 16:49:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:37,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:37,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2024-10-13 16:49:37,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 16:49:37,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:37,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2024-10-13 16:49:37,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:38,713 INFO L124 PetriNetUnfolderBase]: 5880/8358 cut-off events. [2024-10-13 16:49:38,713 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-13 16:49:38,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16978 conditions, 8358 events. 5880/8358 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 43380 event pairs, 5179 based on Foata normal form. 3/5900 useless extension candidates. Maximal degree in co-relation 16905. Up to 8316 conditions per place. [2024-10-13 16:49:38,766 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 41 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-10-13 16:49:38,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 314 flow [2024-10-13 16:49:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-10-13 16:49:38,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25900900900900903 [2024-10-13 16:49:38,769 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 210 flow. Second operand 6 states and 115 transitions. [2024-10-13 16:49:38,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 314 flow [2024-10-13 16:49:38,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:38,774 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 232 flow [2024-10-13 16:49:38,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-10-13 16:49:38,775 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2024-10-13 16:49:38,775 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 232 flow [2024-10-13 16:49:38,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 16:49:38,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:38,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:49:38,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:49:38,980 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 16:49:38,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:38,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash -521922476, now seen corresponding path program 1 times [2024-10-13 16:49:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:38,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800231969] [2024-10-13 16:49:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:39,053 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 16:49:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800231969] [2024-10-13 16:49:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800231969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691983636] [2024-10-13 16:49:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:39,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:39,057 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 16:49:39,059 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 16:49:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:39,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:39,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:39,171 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 16:49:39,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:39,210 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 16:49:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691983636] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:39,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:49:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259973401] [2024-10-13 16:49:39,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:39,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:39,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2024-10-13 16:49:39,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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 16:49:39,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:39,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2024-10-13 16:49:39,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:40,390 INFO L124 PetriNetUnfolderBase]: 5889/8394 cut-off events. [2024-10-13 16:49:40,390 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-10-13 16:49:40,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17119 conditions, 8394 events. 5889/8394 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 43759 event pairs, 5179 based on Foata normal form. 9/5942 useless extension candidates. Maximal degree in co-relation 16907. Up to 8331 conditions per place. [2024-10-13 16:49:40,449 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 48 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2024-10-13 16:49:40,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 576 flow [2024-10-13 16:49:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-10-13 16:49:40,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24864864864864866 [2024-10-13 16:49:40,452 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 232 flow. Second operand 10 states and 184 transitions. [2024-10-13 16:49:40,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 576 flow [2024-10-13 16:49:40,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 493 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:40,459 INFO L231 Difference]: Finished difference. Result has 72 places, 91 transitions, 447 flow [2024-10-13 16:49:40,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=72, PETRI_TRANSITIONS=91} [2024-10-13 16:49:40,461 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-10-13 16:49:40,461 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 91 transitions, 447 flow [2024-10-13 16:49:40,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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 16:49:40,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:40,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:40,479 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 16:49:40,663 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 16:49:40,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:40,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1810309931, now seen corresponding path program 1 times [2024-10-13 16:49:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377071089] [2024-10-13 16:49:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:40,762 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 16:49:40,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377071089] [2024-10-13 16:49:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377071089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:49:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383508807] [2024-10-13 16:49:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:40,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:40,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:40,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 91 transitions, 447 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 16:49:40,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:40,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:40,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:41,639 INFO L124 PetriNetUnfolderBase]: 7159/10222 cut-off events. [2024-10-13 16:49:41,640 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-10-13 16:49:41,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 10222 events. 7159/10222 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 54687 event pairs, 2362 based on Foata normal form. 114/7380 useless extension candidates. Maximal degree in co-relation 20746. Up to 8328 conditions per place. [2024-10-13 16:49:41,686 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 102 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2024-10-13 16:49:41,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 114 transitions, 707 flow [2024-10-13 16:49:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-13 16:49:41,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-10-13 16:49:41,688 INFO L175 Difference]: Start difference. First operand has 72 places, 91 transitions, 447 flow. Second operand 3 states and 116 transitions. [2024-10-13 16:49:41,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 114 transitions, 707 flow [2024-10-13 16:49:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 114 transitions, 670 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:41,692 INFO L231 Difference]: Finished difference. Result has 73 places, 93 transitions, 431 flow [2024-10-13 16:49:41,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=73, PETRI_TRANSITIONS=93} [2024-10-13 16:49:41,693 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2024-10-13 16:49:41,693 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 93 transitions, 431 flow [2024-10-13 16:49:41,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 16:49:41,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:41,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:41,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:49:41,694 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:41,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash 30420227, now seen corresponding path program 1 times [2024-10-13 16:49:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:41,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570797507] [2024-10-13 16:49:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:41,759 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 16:49:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570797507] [2024-10-13 16:49:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570797507] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:41,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:41,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193003309] [2024-10-13 16:49:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:41,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:41,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:41,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 93 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 16:49:41,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:41,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:41,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:42,754 INFO L124 PetriNetUnfolderBase]: 6818/9772 cut-off events. [2024-10-13 16:49:42,755 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-10-13 16:49:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20760 conditions, 9772 events. 6818/9772 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 48998 event pairs, 2901 based on Foata normal form. 212/7643 useless extension candidates. Maximal degree in co-relation 20665. Up to 6361 conditions per place. [2024-10-13 16:49:42,820 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 104 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-10-13 16:49:42,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 692 flow [2024-10-13 16:49:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-13 16:49:42,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-10-13 16:49:42,822 INFO L175 Difference]: Start difference. First operand has 73 places, 93 transitions, 431 flow. Second operand 3 states and 116 transitions. [2024-10-13 16:49:42,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 692 flow [2024-10-13 16:49:42,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:42,826 INFO L231 Difference]: Finished difference. Result has 75 places, 93 transitions, 438 flow [2024-10-13 16:49:42,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=75, PETRI_TRANSITIONS=93} [2024-10-13 16:49:42,827 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2024-10-13 16:49:42,828 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 93 transitions, 438 flow [2024-10-13 16:49:42,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 16:49:42,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:42,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:42,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:49:42,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:42,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1252452778, now seen corresponding path program 1 times [2024-10-13 16:49:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772930780] [2024-10-13 16:49:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:42,928 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 16:49:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772930780] [2024-10-13 16:49:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772930780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670596094] [2024-10-13 16:49:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:42,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:42,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:42,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 16:49:42,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:42,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:42,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:43,969 INFO L124 PetriNetUnfolderBase]: 7435/10775 cut-off events. [2024-10-13 16:49:43,970 INFO L125 PetriNetUnfolderBase]: For 781/781 co-relation queries the response was YES. [2024-10-13 16:49:43,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23517 conditions, 10775 events. 7435/10775 cut-off events. For 781/781 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 55906 event pairs, 6755 based on Foata normal form. 112/8585 useless extension candidates. Maximal degree in co-relation 23364. Up to 9739 conditions per place. [2024-10-13 16:49:44,029 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 100 selfloop transitions, 9 changer transitions 25/143 dead transitions. [2024-10-13 16:49:44,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 941 flow [2024-10-13 16:49:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-10-13 16:49:44,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-10-13 16:49:44,031 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 438 flow. Second operand 5 states and 158 transitions. [2024-10-13 16:49:44,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 941 flow [2024-10-13 16:49:44,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:44,039 INFO L231 Difference]: Finished difference. Result has 80 places, 99 transitions, 523 flow [2024-10-13 16:49:44,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=80, PETRI_TRANSITIONS=99} [2024-10-13 16:49:44,041 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-10-13 16:49:44,041 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 99 transitions, 523 flow [2024-10-13 16:49:44,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 16:49:44,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:44,043 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:49:44,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:49:44,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:44,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -178504993, now seen corresponding path program 2 times [2024-10-13 16:49:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944854857] [2024-10-13 16:49:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:44,214 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 16:49:44,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:44,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944854857] [2024-10-13 16:49:44,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944854857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:44,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868264400] [2024-10-13 16:49:44,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:44,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:44,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:44,218 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 16:49:44,219 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 16:49:44,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:44,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:44,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:49:44,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:44,345 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 16:49:44,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:44,376 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 16:49:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868264400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:44,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:44,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:49:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542391421] [2024-10-13 16:49:44,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:44,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:49:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:49:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:49:44,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2024-10-13 16:49:44,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 99 transitions, 523 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 16:49:44,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:44,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2024-10-13 16:49:44,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:45,465 INFO L124 PetriNetUnfolderBase]: 7439/10789 cut-off events. [2024-10-13 16:49:45,465 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-10-13 16:49:45,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23928 conditions, 10789 events. 7439/10789 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 57040 event pairs, 6755 based on Foata normal form. 10/8482 useless extension candidates. Maximal degree in co-relation 23724. Up to 10655 conditions per place. [2024-10-13 16:49:45,519 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 39 selfloop transitions, 53 changer transitions 8/106 dead transitions. [2024-10-13 16:49:45,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 764 flow [2024-10-13 16:49:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2024-10-13 16:49:45,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.21525096525096524 [2024-10-13 16:49:45,521 INFO L175 Difference]: Start difference. First operand has 80 places, 99 transitions, 523 flow. Second operand 14 states and 223 transitions. [2024-10-13 16:49:45,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 764 flow [2024-10-13 16:49:45,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 722 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:45,527 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 553 flow [2024-10-13 16:49:45,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=553, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2024-10-13 16:49:45,528 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2024-10-13 16:49:45,528 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 553 flow [2024-10-13 16:49:45,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 16:49:45,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:45,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:45,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:45,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:45,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:45,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:45,735 INFO L85 PathProgramCache]: Analyzing trace with hash 533893141, now seen corresponding path program 1 times [2024-10-13 16:49:45,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483940256] [2024-10-13 16:49:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:45,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483940256] [2024-10-13 16:49:45,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483940256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468068116] [2024-10-13 16:49:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:45,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:45,868 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 16:49:45,869 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 16:49:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:45,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:45,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:46,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468068116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:46,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:46,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-13 16:49:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332574077] [2024-10-13 16:49:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:46,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:49:46,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:49:46,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:46,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:46,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:46,448 INFO L124 PetriNetUnfolderBase]: 4797/6920 cut-off events. [2024-10-13 16:49:46,448 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2024-10-13 16:49:46,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15197 conditions, 6920 events. 4797/6920 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 34094 event pairs, 4276 based on Foata normal form. 448/5978 useless extension candidates. Maximal degree in co-relation 14901. Up to 6889 conditions per place. [2024-10-13 16:49:46,478 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 87 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2024-10-13 16:49:46,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 94 transitions, 717 flow [2024-10-13 16:49:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-13 16:49:46,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-10-13 16:49:46,479 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 553 flow. Second operand 3 states and 91 transitions. [2024-10-13 16:49:46,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 94 transitions, 717 flow [2024-10-13 16:49:46,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 508 flow, removed 23 selfloop flow, removed 14 redundant places. [2024-10-13 16:49:46,485 INFO L231 Difference]: Finished difference. Result has 67 places, 94 transitions, 334 flow [2024-10-13 16:49:46,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=67, PETRI_TRANSITIONS=94} [2024-10-13 16:49:46,486 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-10-13 16:49:46,487 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 94 transitions, 334 flow [2024-10-13 16:49:46,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:49:46,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:46,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:46,504 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 16:49:46,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:46,688 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:46,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -629180654, now seen corresponding path program 1 times [2024-10-13 16:49:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:46,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551257033] [2024-10-13 16:49:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:46,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:46,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551257033] [2024-10-13 16:49:46,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551257033] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:46,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:46,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:46,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641661742] [2024-10-13 16:49:46,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:46,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:46,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:46,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:46,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 94 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 16:49:46,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:46,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:46,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:47,169 INFO L124 PetriNetUnfolderBase]: 3767/5482 cut-off events. [2024-10-13 16:49:47,169 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2024-10-13 16:49:47,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11985 conditions, 5482 events. 3767/5482 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25268 event pairs, 1727 based on Foata normal form. 124/4485 useless extension candidates. Maximal degree in co-relation 11972. Up to 4119 conditions per place. [2024-10-13 16:49:47,188 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 103 selfloop transitions, 2 changer transitions 6/117 dead transitions. [2024-10-13 16:49:47,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 612 flow [2024-10-13 16:49:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-13 16:49:47,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-10-13 16:49:47,190 INFO L175 Difference]: Start difference. First operand has 67 places, 94 transitions, 334 flow. Second operand 3 states and 114 transitions. [2024-10-13 16:49:47,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 612 flow [2024-10-13 16:49:47,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 611 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:47,193 INFO L231 Difference]: Finished difference. Result has 69 places, 95 transitions, 347 flow [2024-10-13 16:49:47,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=69, PETRI_TRANSITIONS=95} [2024-10-13 16:49:47,194 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-10-13 16:49:47,194 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 95 transitions, 347 flow [2024-10-13 16:49:47,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 16:49:47,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:47,194 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, 1] [2024-10-13 16:49:47,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:49:47,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:47,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1603211847, now seen corresponding path program 1 times [2024-10-13 16:49:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:47,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597169984] [2024-10-13 16:49:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:47,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597169984] [2024-10-13 16:49:47,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597169984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:47,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:47,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156113132] [2024-10-13 16:49:47,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:47,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:47,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:47,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:47,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 95 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 16:49:47,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:47,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:47,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:47,797 INFO L124 PetriNetUnfolderBase]: 4502/6637 cut-off events. [2024-10-13 16:49:47,797 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-10-13 16:49:47,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14888 conditions, 6637 events. 4502/6637 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 32295 event pairs, 4052 based on Foata normal form. 20/5458 useless extension candidates. Maximal degree in co-relation 14873. Up to 5414 conditions per place. [2024-10-13 16:49:47,819 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 80 selfloop transitions, 8 changer transitions 23/117 dead transitions. [2024-10-13 16:49:47,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 623 flow [2024-10-13 16:49:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-13 16:49:47,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-10-13 16:49:47,820 INFO L175 Difference]: Start difference. First operand has 69 places, 95 transitions, 347 flow. Second operand 4 states and 129 transitions. [2024-10-13 16:49:47,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 623 flow [2024-10-13 16:49:47,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:47,823 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 368 flow [2024-10-13 16:49:47,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2024-10-13 16:49:47,824 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-10-13 16:49:47,824 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 368 flow [2024-10-13 16:49:47,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 16:49:47,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:47,824 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, 1, 1, 1, 1] [2024-10-13 16:49:47,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:49:47,825 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:47,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 210344465, now seen corresponding path program 1 times [2024-10-13 16:49:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850198902] [2024-10-13 16:49:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850198902] [2024-10-13 16:49:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850198902] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820375926] [2024-10-13 16:49:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:48,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:48,031 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 16:49:48,032 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 16:49:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:48,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:48,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:48,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:48,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820375926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:48,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 16:49:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8790091] [2024-10-13 16:49:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:48,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:49:48,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:48,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 16:49:48,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:48,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:48,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:48,470 INFO L124 PetriNetUnfolderBase]: 3135/4589 cut-off events. [2024-10-13 16:49:48,471 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2024-10-13 16:49:48,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 4589 events. 3135/4589 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 20896 event pairs, 2748 based on Foata normal form. 108/3962 useless extension candidates. Maximal degree in co-relation 10345. Up to 4558 conditions per place. [2024-10-13 16:49:48,483 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 85 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2024-10-13 16:49:48,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 532 flow [2024-10-13 16:49:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-13 16:49:48,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-10-13 16:49:48,484 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 368 flow. Second operand 3 states and 87 transitions. [2024-10-13 16:49:48,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 532 flow [2024-10-13 16:49:48,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 514 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:48,487 INFO L231 Difference]: Finished difference. Result has 69 places, 92 transitions, 344 flow [2024-10-13 16:49:48,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=69, PETRI_TRANSITIONS=92} [2024-10-13 16:49:48,487 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-10-13 16:49:48,488 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 92 transitions, 344 flow [2024-10-13 16:49:48,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 16:49:48,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:48,488 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, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:48,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:49:48,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 16:49:48,693 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:48,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 277604180, now seen corresponding path program 1 times [2024-10-13 16:49:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:48,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107471101] [2024-10-13 16:49:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107471101] [2024-10-13 16:49:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107471101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:48,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223521131] [2024-10-13 16:49:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:48,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:48,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:48,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 92 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:49:48,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:48,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:48,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:49,205 INFO L124 PetriNetUnfolderBase]: 3913/5833 cut-off events. [2024-10-13 16:49:49,206 INFO L125 PetriNetUnfolderBase]: For 653/653 co-relation queries the response was YES. [2024-10-13 16:49:49,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12965 conditions, 5833 events. 3913/5833 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 28022 event pairs, 3518 based on Foata normal form. 28/4906 useless extension candidates. Maximal degree in co-relation 12949. Up to 4539 conditions per place. [2024-10-13 16:49:49,222 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 78 selfloop transitions, 7 changer transitions 44/135 dead transitions. [2024-10-13 16:49:49,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 135 transitions, 735 flow [2024-10-13 16:49:49,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-13 16:49:49,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-10-13 16:49:49,223 INFO L175 Difference]: Start difference. First operand has 69 places, 92 transitions, 344 flow. Second operand 4 states and 134 transitions. [2024-10-13 16:49:49,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 135 transitions, 735 flow [2024-10-13 16:49:49,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 135 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:49,227 INFO L231 Difference]: Finished difference. Result has 72 places, 91 transitions, 362 flow [2024-10-13 16:49:49,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=72, PETRI_TRANSITIONS=91} [2024-10-13 16:49:49,228 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-10-13 16:49:49,228 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 91 transitions, 362 flow [2024-10-13 16:49:49,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:49:49,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:49,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:49,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:49:49,229 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:49,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1779050688, now seen corresponding path program 1 times [2024-10-13 16:49:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49451384] [2024-10-13 16:49:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49451384] [2024-10-13 16:49:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49451384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214922658] [2024-10-13 16:49:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:49,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:49,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:49,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:49:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:49,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:49,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:49:49,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:49,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214922658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:49,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:49,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-10-13 16:49:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821446290] [2024-10-13 16:49:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:49,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:49,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:49,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:49,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 91 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 16:49:49,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:49,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:49,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:50,399 INFO L124 PetriNetUnfolderBase]: 6686/9683 cut-off events. [2024-10-13 16:49:50,399 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2024-10-13 16:49:50,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22456 conditions, 9683 events. 6686/9683 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 45848 event pairs, 3481 based on Foata normal form. 180/8274 useless extension candidates. Maximal degree in co-relation 22438. Up to 3655 conditions per place. [2024-10-13 16:49:50,435 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 127 selfloop transitions, 8 changer transitions 0/141 dead transitions. [2024-10-13 16:49:50,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 141 transitions, 778 flow [2024-10-13 16:49:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-13 16:49:50,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-10-13 16:49:50,437 INFO L175 Difference]: Start difference. First operand has 72 places, 91 transitions, 362 flow. Second operand 4 states and 150 transitions. [2024-10-13 16:49:50,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 141 transitions, 778 flow [2024-10-13 16:49:50,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 738 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-13 16:49:50,444 INFO L231 Difference]: Finished difference. Result has 73 places, 97 transitions, 393 flow [2024-10-13 16:49:50,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=73, PETRI_TRANSITIONS=97} [2024-10-13 16:49:50,445 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2024-10-13 16:49:50,445 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 97 transitions, 393 flow [2024-10-13 16:49:50,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 16:49:50,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:50,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:50,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:50,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:50,647 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:50,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1136147884, now seen corresponding path program 1 times [2024-10-13 16:49:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:50,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679680547] [2024-10-13 16:49:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679680547] [2024-10-13 16:49:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679680547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572247898] [2024-10-13 16:49:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:50,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:50,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:50,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:50,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:49:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:51,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:49:51,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:51,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:49:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572247898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:51,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-10-13 16:49:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613376143] [2024-10-13 16:49:51,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:51,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:49:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:49:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:49:51,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2024-10-13 16:49:51,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 97 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 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 16:49:51,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:51,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2024-10-13 16:49:51,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:52,929 INFO L124 PetriNetUnfolderBase]: 9471/14205 cut-off events. [2024-10-13 16:49:52,929 INFO L125 PetriNetUnfolderBase]: For 6067/6067 co-relation queries the response was YES. [2024-10-13 16:49:52,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34580 conditions, 14205 events. 9471/14205 cut-off events. For 6067/6067 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 75915 event pairs, 8206 based on Foata normal form. 385/12255 useless extension candidates. Maximal degree in co-relation 34562. Up to 9621 conditions per place. [2024-10-13 16:49:52,985 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 49 selfloop transitions, 40 changer transitions 173/268 dead transitions. [2024-10-13 16:49:52,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 268 transitions, 1494 flow [2024-10-13 16:49:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:49:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:49:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 360 transitions. [2024-10-13 16:49:52,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23166023166023167 [2024-10-13 16:49:52,987 INFO L175 Difference]: Start difference. First operand has 73 places, 97 transitions, 393 flow. Second operand 21 states and 360 transitions. [2024-10-13 16:49:52,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 268 transitions, 1494 flow [2024-10-13 16:49:52,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 268 transitions, 1480 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:52,996 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 484 flow [2024-10-13 16:49:52,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=484, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-10-13 16:49:52,997 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2024-10-13 16:49:52,997 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 484 flow [2024-10-13 16:49:52,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 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 16:49:52,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:52,998 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:53,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:53,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:53,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-13 16:49:53,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2104612733, now seen corresponding path program 2 times [2024-10-13 16:49:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791363804] [2024-10-13 16:49:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:53,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:49:53,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791363804] [2024-10-13 16:49:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791363804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806604299] [2024-10-13 16:49:53,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:53,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:53,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:53,492 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:53,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:49:53,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:53,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:53,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:53,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:49:53,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806604299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:53,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-10-13 16:49:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100494176] [2024-10-13 16:49:53,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:53,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:53,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:49:53,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 74 [2024-10-13 16:49:53,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 16:49:53,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:53,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 74 [2024-10-13 16:49:53,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:54,124 INFO L124 PetriNetUnfolderBase]: 5265/7665 cut-off events. [2024-10-13 16:49:54,125 INFO L125 PetriNetUnfolderBase]: For 5314/5314 co-relation queries the response was YES. [2024-10-13 16:49:54,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19562 conditions, 7665 events. 5265/7665 cut-off events. For 5314/5314 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 35864 event pairs, 4517 based on Foata normal form. 252/6850 useless extension candidates. Maximal degree in co-relation 19537. Up to 7634 conditions per place. [2024-10-13 16:49:54,145 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2024-10-13 16:49:54,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 648 flow [2024-10-13 16:49:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-13 16:49:54,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38288288288288286 [2024-10-13 16:49:54,147 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 484 flow. Second operand 3 states and 85 transitions. [2024-10-13 16:49:54,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 648 flow [2024-10-13 16:49:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 618 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-10-13 16:49:54,158 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2024-10-13 16:49:54,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2024-10-13 16:49:54,158 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2024-10-13 16:49:54,158 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2024-10-13 16:49:54,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-10-13 16:49:54,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-10-13 16:49:54,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-10-13 16:49:54,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-10-13 16:49:54,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-10-13 16:49:54,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-10-13 16:49:54,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-10-13 16:49:54,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-10-13 16:49:54,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-10-13 16:49:54,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-10-13 16:49:54,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:54,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:49:54,366 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:54,372 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:49:54,372 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:49:54,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:49:54 BasicIcfg [2024-10-13 16:49:54,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:49:54,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:49:54,379 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:49:54,379 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:49:54,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:35" (3/4) ... [2024-10-13 16:49:54,381 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:49:54,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:49:54,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:49:54,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-13 16:49:54,395 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 186 nodes and edges [2024-10-13 16:49:54,395 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-10-13 16:49:54,396 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-13 16:49:54,396 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 16:49:54,508 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:49:54,508 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:49:54,508 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:49:54,509 INFO L158 Benchmark]: Toolchain (without parser) took 20802.86ms. Allocated memory was 172.0MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 113.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 606.7MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,509 INFO L158 Benchmark]: CDTParser took 0.93ms. Allocated memory is still 172.0MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:49:54,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.29ms. Allocated memory is still 172.0MB. Free memory was 113.6MB in the beginning and 99.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.12ms. Allocated memory is still 172.0MB. Free memory was 99.5MB in the beginning and 96.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,510 INFO L158 Benchmark]: Boogie Preprocessor took 76.69ms. Allocated memory is still 172.0MB. Free memory was 96.8MB in the beginning and 93.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,510 INFO L158 Benchmark]: RCFGBuilder took 1208.67ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 93.3MB in the beginning and 164.2MB in the end (delta: -70.9MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,511 INFO L158 Benchmark]: TraceAbstraction took 18987.01ms. Allocated memory was 264.2MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 163.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 550.6MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,511 INFO L158 Benchmark]: Witness Printer took 130.07ms. Allocated memory is still 2.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 16:49:54,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93ms. Allocated memory is still 172.0MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.29ms. Allocated memory is still 172.0MB. Free memory was 113.6MB in the beginning and 99.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.12ms. Allocated memory is still 172.0MB. Free memory was 99.5MB in the beginning and 96.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.69ms. Allocated memory is still 172.0MB. Free memory was 96.8MB in the beginning and 93.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1208.67ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 93.3MB in the beginning and 164.2MB in the end (delta: -70.9MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18987.01ms. Allocated memory was 264.2MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 163.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 550.6MB. Max. memory is 16.1GB. * Witness Printer took 130.07ms. Allocated memory is still 2.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 552 mSDsluCounter, 336 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2705 IncrementalHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 39 mSDtfsCounter, 2705 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=553occurred in iteration=7, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 444 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 1505 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1605 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 82/150 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:49:54,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE