./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:04:40,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:04:40,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:04:40,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:04:40,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:04:40,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:04:40,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:04:40,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:04:40,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:04:40,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:04:40,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:04:40,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:04:40,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:04:40,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:04:40,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:04:40,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:04:40,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:04:40,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:04:40,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:04:40,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:04:40,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:04:40,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:04:40,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:04:40,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:04:40,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:04:40,697 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:04:40,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:04:40,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:04:40,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:04:40,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:04:40,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:04:40,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:04:40,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:04:40,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:04:40,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:40,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:04:40,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:04:40,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:04:40,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:04:40,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:04:40,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:04:40,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:04:40,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:04:40,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:04:40,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-11-19 14:04:40,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:04:40,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:04:40,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:04:40,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:04:40,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:04:40,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-19 14:04:42,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:04:42,676 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:04:42,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-19 14:04:42,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15586e4d0/72df90f4d6a449dd8ce3524298b7cfea/FLAGfe9a29674 [2024-11-19 14:04:42,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15586e4d0/72df90f4d6a449dd8ce3524298b7cfea [2024-11-19 14:04:42,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:04:42,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:04:42,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:42,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:04:42,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:04:42,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:42" (1/1) ... [2024-11-19 14:04:42,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4108392a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:42, skipping insertion in model container [2024-11-19 14:04:42,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:42" (1/1) ... [2024-11-19 14:04:42,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:04:42,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:43,005 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:04:43,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:43,060 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:04:43,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43 WrapperNode [2024-11-19 14:04:43,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:43,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:43,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:04:43,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:04:43,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,123 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 397 [2024-11-19 14:04:43,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:43,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:04:43,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:04:43,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:04:43,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,194 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:04:43,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:04:43,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:04:43,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:04:43,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:04:43,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (1/1) ... [2024-11-19 14:04:43,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:43,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:43,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:04:43,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:04:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:04:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:04:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:04:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:04:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:04:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:04:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:04:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:04:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:04:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:04:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:04:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:04:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:04:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:04:43,347 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:04:43,501 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:04:43,506 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:04:44,269 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:04:44,269 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:04:44,629 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:04:44,630 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:04:44,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:44 BoogieIcfgContainer [2024-11-19 14:04:44,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:04:44,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:04:44,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:04:44,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:04:44,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:04:42" (1/3) ... [2024-11-19 14:04:44,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1f3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:44, skipping insertion in model container [2024-11-19 14:04:44,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:43" (2/3) ... [2024-11-19 14:04:44,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1f3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:44, skipping insertion in model container [2024-11-19 14:04:44,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:44" (3/3) ... [2024-11-19 14:04:44,645 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-11-19 14:04:44,660 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:04:44,660 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-11-19 14:04:44,661 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:04:44,774 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:04:44,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2024-11-19 14:04:44,921 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2024-11-19 14:04:44,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:04:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 838 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2024-11-19 14:04:44,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2024-11-19 14:04:44,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2024-11-19 14:04:44,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:04:44,961 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;@9b3ac99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:04:44,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2024-11-19 14:04:44,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:04:44,965 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:04:44,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:04:44,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:44,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:04:44,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:44,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1245782, now seen corresponding path program 1 times [2024-11-19 14:04:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876992559] [2024-11-19 14:04:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876992559] [2024-11-19 14:04:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876992559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:04:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879850125] [2024-11-19 14:04:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:45,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:45,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-19 14:04:45,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:45,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:45,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-19 14:04:45,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:46,180 INFO L124 PetriNetUnfolderBase]: 2273/5775 cut-off events. [2024-11-19 14:04:46,180 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-19 14:04:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 5775 events. 2273/5775 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53618 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 8938. Up to 3254 conditions per place. [2024-11-19 14:04:46,231 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 60 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-19 14:04:46,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 495 flow [2024-11-19 14:04:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2024-11-19 14:04:46,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-11-19 14:04:46,256 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 534 transitions. [2024-11-19 14:04:46,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 495 flow [2024-11-19 14:04:46,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:04:46,273 INFO L231 Difference]: Finished difference. Result has 164 places, 179 transitions, 385 flow [2024-11-19 14:04:46,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=164, PETRI_TRANSITIONS=179} [2024-11-19 14:04:46,282 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2024-11-19 14:04:46,282 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 179 transitions, 385 flow [2024-11-19 14:04:46,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:46,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:46,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:04:46,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:04:46,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1540361593, now seen corresponding path program 1 times [2024-11-19 14:04:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310040186] [2024-11-19 14:04:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:46,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310040186] [2024-11-19 14:04:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310040186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901576228] [2024-11-19 14:04:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:46,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:46,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:46,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:46,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:04:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:46,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:46,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:46,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:04:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901576228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:04:46,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:04:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535039387] [2024-11-19 14:04:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:46,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:04:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:04:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:04:46,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-19 14:04:46,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 179 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:46,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:46,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-19 14:04:46,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:47,357 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2024-11-19 14:04:47,358 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 14:04:47,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53604 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 9060. Up to 3249 conditions per place. [2024-11-19 14:04:47,403 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-19 14:04:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 507 flow [2024-11-19 14:04:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:04:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:04:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2024-11-19 14:04:47,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092592592592593 [2024-11-19 14:04:47,410 INFO L175 Difference]: Start difference. First operand has 164 places, 179 transitions, 385 flow. Second operand 6 states and 766 transitions. [2024-11-19 14:04:47,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 507 flow [2024-11-19 14:04:47,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 178 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:47,416 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 392 flow [2024-11-19 14:04:47,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2024-11-19 14:04:47,418 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-19 14:04:47,418 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 392 flow [2024-11-19 14:04:47,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:47,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:47,420 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:04:47,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:04:47,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:47,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:47,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash -506567868, now seen corresponding path program 1 times [2024-11-19 14:04:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:47,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886124948] [2024-11-19 14:04:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:47,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886124948] [2024-11-19 14:04:47,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886124948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197740098] [2024-11-19 14:04:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:47,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:47,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:04:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:47,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:47,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:47,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197740098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:47,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:47,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:04:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942470530] [2024-11-19 14:04:47,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:47,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:04:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:04:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:04:47,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-19 14:04:47,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:47,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:47,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-19 14:04:47,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:48,576 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2024-11-19 14:04:48,577 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-19 14:04:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 5786 events. 2276/5786 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53709 event pairs, 1252 based on Foata normal form. 3/4406 useless extension candidates. Maximal degree in co-relation 9061. Up to 3256 conditions per place. [2024-11-19 14:04:48,617 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-11-19 14:04:48,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 187 transitions, 590 flow [2024-11-19 14:04:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:04:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:04:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2024-11-19 14:04:48,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-19 14:04:48,621 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 392 flow. Second operand 10 states and 1245 transitions. [2024-11-19 14:04:48,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 187 transitions, 590 flow [2024-11-19 14:04:48,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 544 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 14:04:48,627 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 444 flow [2024-11-19 14:04:48,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2024-11-19 14:04:48,629 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-19 14:04:48,630 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 444 flow [2024-11-19 14:04:48,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:48,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:48,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:48,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:04:48,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:04:48,832 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:48,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -168260666, now seen corresponding path program 1 times [2024-11-19 14:04:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987032902] [2024-11-19 14:04:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987032902] [2024-11-19 14:04:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987032902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:48,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:48,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590325589] [2024-11-19 14:04:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:48,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:48,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:48,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:48,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-19 14:04:48,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:48,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:48,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-19 14:04:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:50,147 INFO L124 PetriNetUnfolderBase]: 5324/11288 cut-off events. [2024-11-19 14:04:50,147 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 14:04:50,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19267 conditions, 11288 events. 5324/11288 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 104859 event pairs, 1055 based on Foata normal form. 416/9336 useless extension candidates. Maximal degree in co-relation 19233. Up to 3742 conditions per place. [2024-11-19 14:04:50,211 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2024-11-19 14:04:50,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 910 flow [2024-11-19 14:04:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2024-11-19 14:04:50,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2024-11-19 14:04:50,214 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 444 flow. Second operand 4 states and 543 transitions. [2024-11-19 14:04:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 910 flow [2024-11-19 14:04:50,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 255 transitions, 899 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:04:50,221 INFO L231 Difference]: Finished difference. Result has 174 places, 195 transitions, 569 flow [2024-11-19 14:04:50,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=174, PETRI_TRANSITIONS=195} [2024-11-19 14:04:50,223 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-19 14:04:50,223 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 195 transitions, 569 flow [2024-11-19 14:04:50,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:50,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:50,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:50,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:04:50,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:50,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash -921111943, now seen corresponding path program 1 times [2024-11-19 14:04:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897816063] [2024-11-19 14:04:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897816063] [2024-11-19 14:04:50,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897816063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:50,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674075512] [2024-11-19 14:04:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:50,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:50,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-19 14:04:50,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 195 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:50,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:50,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-19 14:04:50,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:51,067 INFO L124 PetriNetUnfolderBase]: 3212/8400 cut-off events. [2024-11-19 14:04:51,068 INFO L125 PetriNetUnfolderBase]: For 2038/2248 co-relation queries the response was YES. [2024-11-19 14:04:51,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15296 conditions, 8400 events. 3212/8400 cut-off events. For 2038/2248 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 83385 event pairs, 1877 based on Foata normal form. 114/6783 useless extension candidates. Maximal degree in co-relation 15260. Up to 3379 conditions per place. [2024-11-19 14:04:51,121 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 105 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-19 14:04:51,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 225 transitions, 854 flow [2024-11-19 14:04:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2024-11-19 14:04:51,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2024-11-19 14:04:51,123 INFO L175 Difference]: Start difference. First operand has 174 places, 195 transitions, 569 flow. Second operand 4 states and 569 transitions. [2024-11-19 14:04:51,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 225 transitions, 854 flow [2024-11-19 14:04:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 225 transitions, 854 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:04:51,138 INFO L231 Difference]: Finished difference. Result has 179 places, 196 transitions, 592 flow [2024-11-19 14:04:51,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=179, PETRI_TRANSITIONS=196} [2024-11-19 14:04:51,139 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2024-11-19 14:04:51,140 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 196 transitions, 592 flow [2024-11-19 14:04:51,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:51,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:51,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:51,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:04:51,140 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:51,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -921080133, now seen corresponding path program 1 times [2024-11-19 14:04:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454331687] [2024-11-19 14:04:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:51,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454331687] [2024-11-19 14:04:51,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454331687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:51,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:51,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264781934] [2024-11-19 14:04:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:51,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:51,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-19 14:04:51,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:51,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:51,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-19 14:04:51,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:53,065 INFO L124 PetriNetUnfolderBase]: 9582/21426 cut-off events. [2024-11-19 14:04:53,065 INFO L125 PetriNetUnfolderBase]: For 7184/7268 co-relation queries the response was YES. [2024-11-19 14:04:53,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41950 conditions, 21426 events. 9582/21426 cut-off events. For 7184/7268 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 210412 event pairs, 1409 based on Foata normal form. 292/18493 useless extension candidates. Maximal degree in co-relation 41912. Up to 6372 conditions per place. [2024-11-19 14:04:53,226 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 32 changer transitions 0/335 dead transitions. [2024-11-19 14:04:53,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 335 transitions, 1457 flow [2024-11-19 14:04:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:04:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:04:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2024-11-19 14:04:53,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2024-11-19 14:04:53,229 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 592 flow. Second operand 5 states and 719 transitions. [2024-11-19 14:04:53,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 335 transitions, 1457 flow [2024-11-19 14:04:53,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 335 transitions, 1454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:53,257 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 859 flow [2024-11-19 14:04:53,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2024-11-19 14:04:53,260 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2024-11-19 14:04:53,261 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 859 flow [2024-11-19 14:04:53,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:53,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:53,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:53,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:04:53,262 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:53,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash -910619801, now seen corresponding path program 1 times [2024-11-19 14:04:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910235884] [2024-11-19 14:04:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910235884] [2024-11-19 14:04:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910235884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:53,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:53,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288882822] [2024-11-19 14:04:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:53,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:53,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-19 14:04:53,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:53,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:53,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-19 14:04:53,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:56,297 INFO L124 PetriNetUnfolderBase]: 15194/33042 cut-off events. [2024-11-19 14:04:56,297 INFO L125 PetriNetUnfolderBase]: For 31170/32790 co-relation queries the response was YES. [2024-11-19 14:04:56,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72989 conditions, 33042 events. 15194/33042 cut-off events. For 31170/32790 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 340809 event pairs, 4101 based on Foata normal form. 1830/29665 useless extension candidates. Maximal degree in co-relation 72945. Up to 9920 conditions per place. [2024-11-19 14:04:56,552 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2024-11-19 14:04:56,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2069 flow [2024-11-19 14:04:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2024-11-19 14:04:56,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2024-11-19 14:04:56,555 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 859 flow. Second operand 4 states and 541 transitions. [2024-11-19 14:04:56,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2069 flow [2024-11-19 14:04:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 338 transitions, 2045 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-19 14:04:56,664 INFO L231 Difference]: Finished difference. Result has 188 places, 226 transitions, 987 flow [2024-11-19 14:04:56,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=188, PETRI_TRANSITIONS=226} [2024-11-19 14:04:56,666 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2024-11-19 14:04:56,666 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 226 transitions, 987 flow [2024-11-19 14:04:56,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:56,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:56,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:56,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:04:56,667 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:56,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1511256591, now seen corresponding path program 1 times [2024-11-19 14:04:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:56,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312784259] [2024-11-19 14:04:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:56,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:56,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312784259] [2024-11-19 14:04:56,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312784259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:56,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:56,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452870164] [2024-11-19 14:04:56,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:56,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:56,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:56,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-19 14:04:56,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 226 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:56,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:56,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-19 14:04:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:59,360 INFO L124 PetriNetUnfolderBase]: 12097/28436 cut-off events. [2024-11-19 14:04:59,360 INFO L125 PetriNetUnfolderBase]: For 29869/31183 co-relation queries the response was YES. [2024-11-19 14:04:59,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67007 conditions, 28436 events. 12097/28436 cut-off events. For 29869/31183 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301801 event pairs, 2267 based on Foata normal form. 880/25474 useless extension candidates. Maximal degree in co-relation 66960. Up to 8600 conditions per place. [2024-11-19 14:04:59,616 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-11-19 14:04:59,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 359 transitions, 2042 flow [2024-11-19 14:04:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:04:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:04:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2024-11-19 14:04:59,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2024-11-19 14:04:59,618 INFO L175 Difference]: Start difference. First operand has 188 places, 226 transitions, 987 flow. Second operand 5 states and 703 transitions. [2024-11-19 14:04:59,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 359 transitions, 2042 flow [2024-11-19 14:04:59,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 359 transitions, 2042 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:04:59,791 INFO L231 Difference]: Finished difference. Result has 192 places, 230 transitions, 1065 flow [2024-11-19 14:04:59,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1065, PETRI_PLACES=192, PETRI_TRANSITIONS=230} [2024-11-19 14:04:59,793 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 30 predicate places. [2024-11-19 14:04:59,793 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 230 transitions, 1065 flow [2024-11-19 14:04:59,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:59,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:59,794 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:59,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:04:59,795 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:04:59,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1835558730, now seen corresponding path program 1 times [2024-11-19 14:04:59,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:59,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036199372] [2024-11-19 14:04:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:59,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:59,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036199372] [2024-11-19 14:04:59,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036199372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:59,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:59,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818847008] [2024-11-19 14:04:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:59,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:00,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-19 14:05:00,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 230 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:00,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:00,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-19 14:05:00,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:02,097 INFO L124 PetriNetUnfolderBase]: 9581/24590 cut-off events. [2024-11-19 14:05:02,098 INFO L125 PetriNetUnfolderBase]: For 27547/28564 co-relation queries the response was YES. [2024-11-19 14:05:02,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 24590 events. 9581/24590 cut-off events. For 27547/28564 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 269098 event pairs, 5519 based on Foata normal form. 600/21624 useless extension candidates. Maximal degree in co-relation 57225. Up to 10295 conditions per place. [2024-11-19 14:05:02,464 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 159 selfloop transitions, 4 changer transitions 0/287 dead transitions. [2024-11-19 14:05:02,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 287 transitions, 1755 flow [2024-11-19 14:05:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2024-11-19 14:05:02,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-19 14:05:02,466 INFO L175 Difference]: Start difference. First operand has 192 places, 230 transitions, 1065 flow. Second operand 4 states and 570 transitions. [2024-11-19 14:05:02,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 287 transitions, 1755 flow [2024-11-19 14:05:02,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 287 transitions, 1755 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:02,578 INFO L231 Difference]: Finished difference. Result has 197 places, 231 transitions, 1088 flow [2024-11-19 14:05:02,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1088, PETRI_PLACES=197, PETRI_TRANSITIONS=231} [2024-11-19 14:05:02,579 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2024-11-19 14:05:02,579 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 231 transitions, 1088 flow [2024-11-19 14:05:02,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:02,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:02,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:02,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:05:02,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:05:02,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1835590540, now seen corresponding path program 1 times [2024-11-19 14:05:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111635292] [2024-11-19 14:05:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111635292] [2024-11-19 14:05:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111635292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:02,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:05:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712241546] [2024-11-19 14:05:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:02,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:02,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-19 14:05:02,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 231 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:02,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:02,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-19 14:05:02,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:07,900 INFO L124 PetriNetUnfolderBase]: 25043/59161 cut-off events. [2024-11-19 14:05:07,901 INFO L125 PetriNetUnfolderBase]: For 75297/78088 co-relation queries the response was YES. [2024-11-19 14:05:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141350 conditions, 59161 events. 25043/59161 cut-off events. For 75297/78088 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 677683 event pairs, 3944 based on Foata normal form. 2224/54096 useless extension candidates. Maximal degree in co-relation 141299. Up to 16392 conditions per place. [2024-11-19 14:05:08,682 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 305 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-11-19 14:05:08,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 445 transitions, 3041 flow [2024-11-19 14:05:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:05:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:05:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2024-11-19 14:05:08,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2024-11-19 14:05:08,685 INFO L175 Difference]: Start difference. First operand has 197 places, 231 transitions, 1088 flow. Second operand 5 states and 715 transitions. [2024-11-19 14:05:08,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 445 transitions, 3041 flow [2024-11-19 14:05:08,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 445 transitions, 3038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:05:08,876 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1355 flow [2024-11-19 14:05:08,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1355, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2024-11-19 14:05:08,878 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2024-11-19 14:05:08,879 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1355 flow [2024-11-19 14:05:08,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:08,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:08,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:08,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:05:08,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:05:08,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -395685535, now seen corresponding path program 1 times [2024-11-19 14:05:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693495296] [2024-11-19 14:05:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693495296] [2024-11-19 14:05:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693495296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:08,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:05:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480930814] [2024-11-19 14:05:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:08,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:05:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:05:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:05:09,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-19 14:05:09,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1355 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:09,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:09,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-19 14:05:09,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:20,374 INFO L124 PetriNetUnfolderBase]: 51809/110459 cut-off events. [2024-11-19 14:05:20,374 INFO L125 PetriNetUnfolderBase]: For 172070/177923 co-relation queries the response was YES. [2024-11-19 14:05:20,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291099 conditions, 110459 events. 51809/110459 cut-off events. For 172070/177923 co-relation queries the response was YES. Maximal size of possible extension queue 2715. Compared 1276583 event pairs, 14578 based on Foata normal form. 3649/107487 useless extension candidates. Maximal degree in co-relation 291042. Up to 29192 conditions per place. [2024-11-19 14:05:21,441 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 428 selfloop transitions, 44 changer transitions 0/584 dead transitions. [2024-11-19 14:05:21,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 584 transitions, 4308 flow [2024-11-19 14:05:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:05:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:05:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2024-11-19 14:05:21,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2024-11-19 14:05:21,444 INFO L175 Difference]: Start difference. First operand has 204 places, 253 transitions, 1355 flow. Second operand 7 states and 988 transitions. [2024-11-19 14:05:21,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 584 transitions, 4308 flow [2024-11-19 14:05:22,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 584 transitions, 4260 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:22,567 INFO L231 Difference]: Finished difference. Result has 214 places, 277 transitions, 1651 flow [2024-11-19 14:05:22,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1651, PETRI_PLACES=214, PETRI_TRANSITIONS=277} [2024-11-19 14:05:22,568 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 52 predicate places. [2024-11-19 14:05:22,569 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 277 transitions, 1651 flow [2024-11-19 14:05:22,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:22,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:22,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:22,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:05:22,570 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-19 14:05:22,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 892303592, now seen corresponding path program 1 times [2024-11-19 14:05:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490313610] [2024-11-19 14:05:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490313610] [2024-11-19 14:05:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490313610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660752186] [2024-11-19 14:05:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:22,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:05:22,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:05:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:22,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 14:05:22,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:22,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:05:23,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 14:05:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:23,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:23,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 14:05:23,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 14:05:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660752186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:23,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:05:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361587424] [2024-11-19 14:05:23,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:23,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:05:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:05:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:05:23,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2024-11-19 14:05:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 277 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:23,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2024-11-19 14:05:23,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand