./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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/popl20-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:13:48,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:13:48,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:13:48,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:13:48,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:13:48,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:13:48,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:13:48,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:13:48,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:13:48,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:13:48,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:13:48,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:13:48,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:13:48,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:13:48,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:13:48,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:13:48,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:13:48,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:13:48,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:13:48,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:13:48,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:13:48,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:13:48,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:13:48,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:13:48,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:13:48,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:13:48,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:13:48,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:13:48,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:48,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:13:48,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:13:48,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:13:48,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:13:48,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:13:48,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-11-09 15:13:49,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:13:49,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:13:49,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:13:49,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:13:49,073 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:13:49,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-11-09 15:13:50,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:13:50,411 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:13:50,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-11-09 15:13:50,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3341fef47/edfca178c6794f2b80b89f11a94fb638/FLAG42220154a [2024-11-09 15:13:50,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3341fef47/edfca178c6794f2b80b89f11a94fb638 [2024-11-09 15:13:50,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:13:50,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:13:50,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:50,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:13:50,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:13:50,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbfc0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50, skipping insertion in model container [2024-11-09 15:13:50,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:13:50,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:50,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:13:50,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:50,705 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:13:50,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50 WrapperNode [2024-11-09 15:13:50,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:50,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:50,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:13:50,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:13:50,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,741 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 195 [2024-11-09 15:13:50,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:50,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:13:50,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:13:50,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:13:50,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,797 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-09 15:13:50,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:13:50,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:13:50,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:13:50,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:13:50,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (1/1) ... [2024-11-09 15:13:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:50,859 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) [2024-11-09 15:13:50,860 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 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:13:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:13:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:13:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:13:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:13:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:13:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:13:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:13:50,894 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:13:50,971 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:13:50,973 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:13:51,253 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:13:51,254 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:13:51,461 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:13:51,461 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-09 15:13:51,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:51 BoogieIcfgContainer [2024-11-09 15:13:51,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:13:51,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:13:51,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:13:51,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:13:51,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:13:50" (1/3) ... [2024-11-09 15:13:51,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ba2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:51, skipping insertion in model container [2024-11-09 15:13:51,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:50" (2/3) ... [2024-11-09 15:13:51,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ba2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:51, skipping insertion in model container [2024-11-09 15:13:51,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:51" (3/3) ... [2024-11-09 15:13:51,471 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-11-09 15:13:51,484 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:13:51,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 15:13:51,484 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:13:51,529 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:13:51,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2024-11-09 15:13:51,583 INFO L124 PetriNetUnfolderBase]: 7/56 cut-off events. [2024-11-09 15:13:51,583 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:13:51,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 7/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-09 15:13:51,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 59 transitions, 139 flow [2024-11-09 15:13:51,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 54 transitions, 123 flow [2024-11-09 15:13:51,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:13:51,606 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;@4db48802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:13:51,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-09 15:13:51,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:13:51,609 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:13:51,609 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:13:51,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:51,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:13:51,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:51,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 749884, now seen corresponding path program 1 times [2024-11-09 15:13:51,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357615468] [2024-11-09 15:13:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357615468] [2024-11-09 15:13:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357615468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740293186] [2024-11-09 15:13:51,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:51,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:51,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:51,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:13:51,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:51,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:51,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:52,114 INFO L124 PetriNetUnfolderBase]: 433/779 cut-off events. [2024-11-09 15:13:52,114 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-09 15:13:52,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 779 events. 433/779 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3526 event pairs, 306 based on Foata normal form. 4/595 useless extension candidates. Maximal degree in co-relation 1301. Up to 619 conditions per place. [2024-11-09 15:13:52,120 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 27 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-11-09 15:13:52,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 189 flow [2024-11-09 15:13:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-09 15:13:52,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4449152542372881 [2024-11-09 15:13:52,131 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 123 flow. Second operand 4 states and 105 transitions. [2024-11-09 15:13:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 189 flow [2024-11-09 15:13:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:52,137 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 126 flow [2024-11-09 15:13:52,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-09 15:13:52,141 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2024-11-09 15:13:52,141 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 126 flow [2024-11-09 15:13:52,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:13:52,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:13:52,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:13:52,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:52,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 23247138, now seen corresponding path program 1 times [2024-11-09 15:13:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276349026] [2024-11-09 15:13:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276349026] [2024-11-09 15:13:52,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276349026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:52,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:52,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639917893] [2024-11-09 15:13:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:52,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:52,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:52,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:13:52,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:52,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:52,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:52,362 INFO L124 PetriNetUnfolderBase]: 437/795 cut-off events. [2024-11-09 15:13:52,362 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:13:52,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 795 events. 437/795 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3624 event pairs, 306 based on Foata normal form. 4/617 useless extension candidates. Maximal degree in co-relation 1412. Up to 636 conditions per place. [2024-11-09 15:13:52,368 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 36 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-11-09 15:13:52,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 266 flow [2024-11-09 15:13:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-09 15:13:52,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4957627118644068 [2024-11-09 15:13:52,370 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 126 flow. Second operand 4 states and 117 transitions. [2024-11-09 15:13:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 266 flow [2024-11-09 15:13:52,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:13:52,392 INFO L231 Difference]: Finished difference. Result has 54 places, 62 transitions, 214 flow [2024-11-09 15:13:52,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2024-11-09 15:13:52,393 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-11-09 15:13:52,393 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 214 flow [2024-11-09 15:13:52,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:13:52,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:52,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:13:52,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:52,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1066508435, now seen corresponding path program 1 times [2024-11-09 15:13:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774646811] [2024-11-09 15:13:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:52,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774646811] [2024-11-09 15:13:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774646811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977678472] [2024-11-09 15:13:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:52,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:52,502 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) [2024-11-09 15:13:52,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:13:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:52,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:52,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977678472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:52,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:52,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:13:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473103700] [2024-11-09 15:13:52,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:52,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:13:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:13:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:13:52,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:52,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 214 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-11-09 15:13:52,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:52,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:52,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:52,920 INFO L124 PetriNetUnfolderBase]: 449/843 cut-off events. [2024-11-09 15:13:52,920 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-09 15:13:52,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 843 events. 449/843 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4057 event pairs, 306 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1429. Up to 639 conditions per place. [2024-11-09 15:13:52,925 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 36 selfloop transitions, 49 changer transitions 0/98 dead transitions. [2024-11-09 15:13:52,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 546 flow [2024-11-09 15:13:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-11-09 15:13:52,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43559322033898307 [2024-11-09 15:13:52,927 INFO L175 Difference]: Start difference. First operand has 54 places, 62 transitions, 214 flow. Second operand 10 states and 257 transitions. [2024-11-09 15:13:52,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 546 flow [2024-11-09 15:13:52,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:52,932 INFO L231 Difference]: Finished difference. Result has 66 places, 98 transitions, 540 flow [2024-11-09 15:13:52,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=66, PETRI_TRANSITIONS=98} [2024-11-09 15:13:52,933 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-11-09 15:13:52,933 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 98 transitions, 540 flow [2024-11-09 15:13:52,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-11-09 15:13:52,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:52,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:13:53,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:53,135 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:53,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1119142498, now seen corresponding path program 1 times [2024-11-09 15:13:53,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022677312] [2024-11-09 15:13:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022677312] [2024-11-09 15:13:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022677312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656169066] [2024-11-09 15:13:53,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:53,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:53,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:53,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:13:53,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 98 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-09 15:13:53,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:53,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:13:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:53,458 INFO L124 PetriNetUnfolderBase]: 883/1519 cut-off events. [2024-11-09 15:13:53,459 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-09 15:13:53,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 1519 events. 883/1519 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7597 event pairs, 466 based on Foata normal form. 42/1218 useless extension candidates. Maximal degree in co-relation 2926. Up to 1001 conditions per place. [2024-11-09 15:13:53,468 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 108 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-09 15:13:53,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 127 transitions, 828 flow [2024-11-09 15:13:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-09 15:13:53,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-09 15:13:53,471 INFO L175 Difference]: Start difference. First operand has 66 places, 98 transitions, 540 flow. Second operand 4 states and 154 transitions. [2024-11-09 15:13:53,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 127 transitions, 828 flow [2024-11-09 15:13:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 702 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-09 15:13:53,478 INFO L231 Difference]: Finished difference. Result has 67 places, 101 transitions, 443 flow [2024-11-09 15:13:53,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=67, PETRI_TRANSITIONS=101} [2024-11-09 15:13:53,479 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-11-09 15:13:53,481 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 101 transitions, 443 flow [2024-11-09 15:13:53,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-09 15:13:53,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:53,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:53,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:53,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:53,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1725337039, now seen corresponding path program 1 times [2024-11-09 15:13:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155063531] [2024-11-09 15:13:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155063531] [2024-11-09 15:13:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155063531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:53,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:53,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508763996] [2024-11-09 15:13:53,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:53,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:53,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:53,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:13:53,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 101 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-09 15:13:53,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:53,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:13:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:53,753 INFO L124 PetriNetUnfolderBase]: 1399/2287 cut-off events. [2024-11-09 15:13:53,753 INFO L125 PetriNetUnfolderBase]: For 896/968 co-relation queries the response was YES. [2024-11-09 15:13:53,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 2287 events. 1399/2287 cut-off events. For 896/968 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11834 event pairs, 724 based on Foata normal form. 64/1931 useless extension candidates. Maximal degree in co-relation 5229. Up to 1517 conditions per place. [2024-11-09 15:13:53,764 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 115 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-09 15:13:53,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 791 flow [2024-11-09 15:13:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-09 15:13:53,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-11-09 15:13:53,767 INFO L175 Difference]: Start difference. First operand has 67 places, 101 transitions, 443 flow. Second operand 4 states and 152 transitions. [2024-11-09 15:13:53,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 791 flow [2024-11-09 15:13:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:53,771 INFO L231 Difference]: Finished difference. Result has 71 places, 104 transitions, 469 flow [2024-11-09 15:13:53,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=71, PETRI_TRANSITIONS=104} [2024-11-09 15:13:53,771 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-11-09 15:13:53,772 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 104 transitions, 469 flow [2024-11-09 15:13:53,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-09 15:13:53,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:53,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:53,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:13:53,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:53,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1456172645, now seen corresponding path program 1 times [2024-11-09 15:13:53,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866041346] [2024-11-09 15:13:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866041346] [2024-11-09 15:13:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866041346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:53,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:53,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:13:53,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86663936] [2024-11-09 15:13:53,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:53,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:53,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:53,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:53,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:53,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-09 15:13:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 104 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2024-11-09 15:13:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-09 15:13:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:54,131 INFO L124 PetriNetUnfolderBase]: 1552/2873 cut-off events. [2024-11-09 15:13:54,132 INFO L125 PetriNetUnfolderBase]: For 1611/1629 co-relation queries the response was YES. [2024-11-09 15:13:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 2873 events. 1552/2873 cut-off events. For 1611/1629 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16105 event pairs, 952 based on Foata normal form. 62/2558 useless extension candidates. Maximal degree in co-relation 7071. Up to 1496 conditions per place. [2024-11-09 15:13:54,146 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 110 selfloop transitions, 59 changer transitions 0/186 dead transitions. [2024-11-09 15:13:54,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1154 flow [2024-11-09 15:13:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-11-09 15:13:54,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:13:54,148 INFO L175 Difference]: Start difference. First operand has 71 places, 104 transitions, 469 flow. Second operand 6 states and 236 transitions. [2024-11-09 15:13:54,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1154 flow [2024-11-09 15:13:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 186 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:54,154 INFO L231 Difference]: Finished difference. Result has 79 places, 144 transitions, 942 flow [2024-11-09 15:13:54,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=942, PETRI_PLACES=79, PETRI_TRANSITIONS=144} [2024-11-09 15:13:54,154 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-11-09 15:13:54,154 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 144 transitions, 942 flow [2024-11-09 15:13:54,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2024-11-09 15:13:54,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:54,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:54,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:13:54,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:54,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 182728669, now seen corresponding path program 1 times [2024-11-09 15:13:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694203215] [2024-11-09 15:13:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:54,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694203215] [2024-11-09 15:13:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694203215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:54,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:54,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:13:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244357489] [2024-11-09 15:13:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:54,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:54,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:54,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:13:54,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 144 transitions, 942 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-11-09 15:13:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:13:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:54,483 INFO L124 PetriNetUnfolderBase]: 1868/3072 cut-off events. [2024-11-09 15:13:54,484 INFO L125 PetriNetUnfolderBase]: For 2860/3058 co-relation queries the response was YES. [2024-11-09 15:13:54,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8526 conditions, 3072 events. 1868/3072 cut-off events. For 2860/3058 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 15245 event pairs, 572 based on Foata normal form. 122/2752 useless extension candidates. Maximal degree in co-relation 8294. Up to 1144 conditions per place. [2024-11-09 15:13:54,501 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 156 selfloop transitions, 10 changer transitions 0/181 dead transitions. [2024-11-09 15:13:54,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1452 flow [2024-11-09 15:13:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-09 15:13:54,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5661016949152542 [2024-11-09 15:13:54,503 INFO L175 Difference]: Start difference. First operand has 79 places, 144 transitions, 942 flow. Second operand 5 states and 167 transitions. [2024-11-09 15:13:54,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1452 flow [2024-11-09 15:13:54,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 181 transitions, 1446 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:54,512 INFO L231 Difference]: Finished difference. Result has 82 places, 143 transitions, 954 flow [2024-11-09 15:13:54,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=954, PETRI_PLACES=82, PETRI_TRANSITIONS=143} [2024-11-09 15:13:54,512 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-11-09 15:13:54,513 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 143 transitions, 954 flow [2024-11-09 15:13:54,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-11-09 15:13:54,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:54,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:54,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:13:54,513 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:54,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1642892853, now seen corresponding path program 1 times [2024-11-09 15:13:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:54,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834747482] [2024-11-09 15:13:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834747482] [2024-11-09 15:13:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834747482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:54,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:54,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:13:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355857923] [2024-11-09 15:13:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:54,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:13:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:13:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:13:54,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-09 15:13:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 143 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-09 15:13:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-09 15:13:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:54,857 INFO L124 PetriNetUnfolderBase]: 1274/2333 cut-off events. [2024-11-09 15:13:54,857 INFO L125 PetriNetUnfolderBase]: For 2317/2331 co-relation queries the response was YES. [2024-11-09 15:13:54,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 2333 events. 1274/2333 cut-off events. For 2317/2331 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12509 event pairs, 824 based on Foata normal form. 34/2131 useless extension candidates. Maximal degree in co-relation 6440. Up to 1496 conditions per place. [2024-11-09 15:13:54,872 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 93 selfloop transitions, 63 changer transitions 2/174 dead transitions. [2024-11-09 15:13:54,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 174 transitions, 1398 flow [2024-11-09 15:13:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:13:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:13:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-11-09 15:13:54,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6174334140435835 [2024-11-09 15:13:54,873 INFO L175 Difference]: Start difference. First operand has 82 places, 143 transitions, 954 flow. Second operand 7 states and 255 transitions. [2024-11-09 15:13:54,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 174 transitions, 1398 flow [2024-11-09 15:13:54,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 174 transitions, 1354 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:13:54,880 INFO L231 Difference]: Finished difference. Result has 87 places, 149 transitions, 1147 flow [2024-11-09 15:13:54,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1147, PETRI_PLACES=87, PETRI_TRANSITIONS=149} [2024-11-09 15:13:54,881 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-11-09 15:13:54,881 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 149 transitions, 1147 flow [2024-11-09 15:13:54,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-09 15:13:54,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:54,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:54,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:13:54,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:54,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1369622251, now seen corresponding path program 1 times [2024-11-09 15:13:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:54,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25162766] [2024-11-09 15:13:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:54,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25162766] [2024-11-09 15:13:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25162766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104679758] [2024-11-09 15:13:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:54,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:54,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:13:54,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 149 transitions, 1147 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-11-09 15:13:54,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:54,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:13:54,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:55,209 INFO L124 PetriNetUnfolderBase]: 1492/2609 cut-off events. [2024-11-09 15:13:55,209 INFO L125 PetriNetUnfolderBase]: For 3354/3392 co-relation queries the response was YES. [2024-11-09 15:13:55,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 2609 events. 1492/2609 cut-off events. For 3354/3392 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13590 event pairs, 1016 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 7289. Up to 1793 conditions per place. [2024-11-09 15:13:55,225 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 72 selfloop transitions, 55 changer transitions 29/171 dead transitions. [2024-11-09 15:13:55,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 171 transitions, 1544 flow [2024-11-09 15:13:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-09 15:13:55,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-09 15:13:55,227 INFO L175 Difference]: Start difference. First operand has 87 places, 149 transitions, 1147 flow. Second operand 6 states and 217 transitions. [2024-11-09 15:13:55,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 171 transitions, 1544 flow [2024-11-09 15:13:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 171 transitions, 1467 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:13:55,262 INFO L231 Difference]: Finished difference. Result has 91 places, 139 transitions, 1135 flow [2024-11-09 15:13:55,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1135, PETRI_PLACES=91, PETRI_TRANSITIONS=139} [2024-11-09 15:13:55,263 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-11-09 15:13:55,263 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 139 transitions, 1135 flow [2024-11-09 15:13:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-11-09 15:13:55,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:55,264 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:13:55,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:13:55,264 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:55,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -5345822, now seen corresponding path program 2 times [2024-11-09 15:13:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312478173] [2024-11-09 15:13:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312478173] [2024-11-09 15:13:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312478173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999657063] [2024-11-09 15:13:55,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:55,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:55,380 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) [2024-11-09 15:13:55,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:55,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:13:55,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:55,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:13:55,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:55,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999657063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:55,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:13:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850981732] [2024-11-09 15:13:55,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:55,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:13:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:13:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:13:55,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:55,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 139 transitions, 1135 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-11-09 15:13:55,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:55,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:55,983 INFO L124 PetriNetUnfolderBase]: 1090/2037 cut-off events. [2024-11-09 15:13:55,983 INFO L125 PetriNetUnfolderBase]: For 2658/2674 co-relation queries the response was YES. [2024-11-09 15:13:55,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 2037 events. 1090/2037 cut-off events. For 2658/2674 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11331 event pairs, 724 based on Foata normal form. 8/1903 useless extension candidates. Maximal degree in co-relation 5624. Up to 1485 conditions per place. [2024-11-09 15:13:55,991 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 46 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-11-09 15:13:55,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 158 transitions, 1617 flow [2024-11-09 15:13:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:13:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:13:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 484 transitions. [2024-11-09 15:13:55,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3418079096045198 [2024-11-09 15:13:55,993 INFO L175 Difference]: Start difference. First operand has 91 places, 139 transitions, 1135 flow. Second operand 24 states and 484 transitions. [2024-11-09 15:13:55,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 158 transitions, 1617 flow [2024-11-09 15:13:55,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 158 transitions, 1381 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-09 15:13:55,999 INFO L231 Difference]: Finished difference. Result has 101 places, 158 transitions, 1350 flow [2024-11-09 15:13:56,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1350, PETRI_PLACES=101, PETRI_TRANSITIONS=158} [2024-11-09 15:13:56,000 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-11-09 15:13:56,000 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 158 transitions, 1350 flow [2024-11-09 15:13:56,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-11-09 15:13:56,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:56,001 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:13:56,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:13:56,201 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,SelfDestructingSolverStorable9 [2024-11-09 15:13:56,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:56,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash -914863449, now seen corresponding path program 1 times [2024-11-09 15:13:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:56,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620235096] [2024-11-09 15:13:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:56,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:13:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620235096] [2024-11-09 15:13:56,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620235096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:56,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:56,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:56,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999057661] [2024-11-09 15:13:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:56,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:56,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-09 15:13:56,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 158 transitions, 1350 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-09 15:13:56,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:56,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-09 15:13:56,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:56,433 INFO L124 PetriNetUnfolderBase]: 1077/1965 cut-off events. [2024-11-09 15:13:56,433 INFO L125 PetriNetUnfolderBase]: For 1230/1244 co-relation queries the response was YES. [2024-11-09 15:13:56,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 1965 events. 1077/1965 cut-off events. For 1230/1244 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10908 event pairs, 724 based on Foata normal form. 3/1744 useless extension candidates. Maximal degree in co-relation 4924. Up to 1505 conditions per place. [2024-11-09 15:13:56,443 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 75 selfloop transitions, 20 changer transitions 5/115 dead transitions. [2024-11-09 15:13:56,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 1017 flow [2024-11-09 15:13:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-09 15:13:56,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614406779661017 [2024-11-09 15:13:56,444 INFO L175 Difference]: Start difference. First operand has 101 places, 158 transitions, 1350 flow. Second operand 4 states and 145 transitions. [2024-11-09 15:13:56,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 1017 flow [2024-11-09 15:13:56,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 785 flow, removed 51 selfloop flow, removed 13 redundant places. [2024-11-09 15:13:56,449 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 603 flow [2024-11-09 15:13:56,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=603, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2024-11-09 15:13:56,450 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-11-09 15:13:56,450 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 603 flow [2024-11-09 15:13:56,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-09 15:13:56,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:56,451 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:56,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:13:56,451 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:56,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -839634920, now seen corresponding path program 1 times [2024-11-09 15:13:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833907624] [2024-11-09 15:13:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:13:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833907624] [2024-11-09 15:13:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833907624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989337391] [2024-11-09 15:13:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:56,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:56,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:56,572 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) [2024-11-09 15:13:56,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:13:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:56,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 15:13:56,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:13:56,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:13:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989337391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:56,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-09 15:13:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200438991] [2024-11-09 15:13:56,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:56,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:13:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:13:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:13:56,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:56,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 603 flow. Second operand has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 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) [2024-11-09 15:13:56,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:56,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:56,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:57,364 INFO L124 PetriNetUnfolderBase]: 2129/3791 cut-off events. [2024-11-09 15:13:57,364 INFO L125 PetriNetUnfolderBase]: For 2139/2234 co-relation queries the response was YES. [2024-11-09 15:13:57,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 3791 events. 2129/3791 cut-off events. For 2139/2234 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 21270 event pairs, 1448 based on Foata normal form. 3/3364 useless extension candidates. Maximal degree in co-relation 9406. Up to 1480 conditions per place. [2024-11-09 15:13:57,380 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 63 selfloop transitions, 70 changer transitions 0/145 dead transitions. [2024-11-09 15:13:57,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 1033 flow [2024-11-09 15:13:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-11-09 15:13:57,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42033898305084744 [2024-11-09 15:13:57,381 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 603 flow. Second operand 10 states and 248 transitions. [2024-11-09 15:13:57,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 1033 flow [2024-11-09 15:13:57,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 896 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-09 15:13:57,387 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 692 flow [2024-11-09 15:13:57,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-11-09 15:13:57,388 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-11-09 15:13:57,388 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 692 flow [2024-11-09 15:13:57,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 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) [2024-11-09 15:13:57,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:57,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:57,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:13:57,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:57,593 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:57,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash -939343130, now seen corresponding path program 1 times [2024-11-09 15:13:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957627771] [2024-11-09 15:13:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:13:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957627771] [2024-11-09 15:13:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957627771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938879620] [2024-11-09 15:13:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:57,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:57,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:57,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:13:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:57,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:13:57,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:13:57,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:13:57,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938879620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:57,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:57,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:13:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181635149] [2024-11-09 15:13:57,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:57,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:13:57,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:13:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:13:58,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-11-09 15:13:58,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 692 flow. Second operand has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 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) [2024-11-09 15:13:58,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:58,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-11-09 15:13:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:58,861 INFO L124 PetriNetUnfolderBase]: 2217/3672 cut-off events. [2024-11-09 15:13:58,861 INFO L125 PetriNetUnfolderBase]: For 1695/1809 co-relation queries the response was YES. [2024-11-09 15:13:58,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 3672 events. 2217/3672 cut-off events. For 1695/1809 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18846 event pairs, 536 based on Foata normal form. 62/3282 useless extension candidates. Maximal degree in co-relation 9304. Up to 825 conditions per place. [2024-11-09 15:13:58,875 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 162 selfloop transitions, 82 changer transitions 0/254 dead transitions. [2024-11-09 15:13:58,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 254 transitions, 1615 flow [2024-11-09 15:13:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:13:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:13:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 421 transitions. [2024-11-09 15:13:58,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.419740777666999 [2024-11-09 15:13:58,877 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 692 flow. Second operand 17 states and 421 transitions. [2024-11-09 15:13:58,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 254 transitions, 1615 flow [2024-11-09 15:13:58,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 254 transitions, 1615 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:58,883 INFO L231 Difference]: Finished difference. Result has 108 places, 123 transitions, 874 flow [2024-11-09 15:13:58,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=874, PETRI_PLACES=108, PETRI_TRANSITIONS=123} [2024-11-09 15:13:58,884 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2024-11-09 15:13:58,884 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 123 transitions, 874 flow [2024-11-09 15:13:58,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 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) [2024-11-09 15:13:58,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:58,884 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-09 15:13:58,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:59,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:59,085 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:13:59,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:59,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1679455993, now seen corresponding path program 2 times [2024-11-09 15:13:59,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:59,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604547536] [2024-11-09 15:13:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:59,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604547536] [2024-11-09 15:13:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604547536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233415468] [2024-11-09 15:13:59,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:59,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:59,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:59,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:13:59,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:13:59,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:59,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:13:59,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:13:59,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:13:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233415468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:59,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:59,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-09 15:13:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194868760] [2024-11-09 15:13:59,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:59,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:13:59,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:59,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:13:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:13:59,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-09 15:13:59,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 123 transitions, 874 flow. Second operand has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2024-11-09 15:13:59,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:59,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-09 15:13:59,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:00,337 INFO L124 PetriNetUnfolderBase]: 2064/3500 cut-off events. [2024-11-09 15:14:00,337 INFO L125 PetriNetUnfolderBase]: For 2978/3104 co-relation queries the response was YES. [2024-11-09 15:14:00,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 3500 events. 2064/3500 cut-off events. For 2978/3104 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17899 event pairs, 1489 based on Foata normal form. 6/3127 useless extension candidates. Maximal degree in co-relation 9699. Up to 2878 conditions per place. [2024-11-09 15:14:00,356 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 31 selfloop transitions, 96 changer transitions 0/138 dead transitions. [2024-11-09 15:14:00,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1240 flow [2024-11-09 15:14:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 15:14:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 15:14:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 402 transitions. [2024-11-09 15:14:00,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3586083853702052 [2024-11-09 15:14:00,358 INFO L175 Difference]: Start difference. First operand has 108 places, 123 transitions, 874 flow. Second operand 19 states and 402 transitions. [2024-11-09 15:14:00,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1240 flow [2024-11-09 15:14:00,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 985 flow, removed 6 selfloop flow, removed 16 redundant places. [2024-11-09 15:14:00,365 INFO L231 Difference]: Finished difference. Result has 107 places, 138 transitions, 923 flow [2024-11-09 15:14:00,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=923, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2024-11-09 15:14:00,365 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-11-09 15:14:00,366 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 923 flow [2024-11-09 15:14:00,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2024-11-09 15:14:00,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:00,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:00,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:14:00,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 15:14:00,567 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:00,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 99850432, now seen corresponding path program 1 times [2024-11-09 15:14:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889523935] [2024-11-09 15:14:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:14:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889523935] [2024-11-09 15:14:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889523935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256915100] [2024-11-09 15:14:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:00,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:00,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:00,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:00,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:14:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:00,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:00,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:14:00,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:00,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256915100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:00,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:00,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:14:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068808288] [2024-11-09 15:14:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:00,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:14:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:14:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:14:00,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:14:00,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 138 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-09 15:14:00,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:00,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:14:00,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:01,005 INFO L124 PetriNetUnfolderBase]: 2376/3824 cut-off events. [2024-11-09 15:14:01,006 INFO L125 PetriNetUnfolderBase]: For 1317/1347 co-relation queries the response was YES. [2024-11-09 15:14:01,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9665 conditions, 3824 events. 2376/3824 cut-off events. For 1317/1347 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18891 event pairs, 429 based on Foata normal form. 132/3421 useless extension candidates. Maximal degree in co-relation 9560. Up to 1059 conditions per place. [2024-11-09 15:14:01,021 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 201 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2024-11-09 15:14:01,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 1579 flow [2024-11-09 15:14:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-09 15:14:01,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-11-09 15:14:01,023 INFO L175 Difference]: Start difference. First operand has 107 places, 138 transitions, 923 flow. Second operand 6 states and 218 transitions. [2024-11-09 15:14:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 1579 flow [2024-11-09 15:14:01,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 217 transitions, 1441 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-09 15:14:01,029 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 795 flow [2024-11-09 15:14:01,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=795, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2024-11-09 15:14:01,030 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-11-09 15:14:01,030 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 795 flow [2024-11-09 15:14:01,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-09 15:14:01,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:01,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:01,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:01,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:14:01,235 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:01,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -173420170, now seen corresponding path program 1 times [2024-11-09 15:14:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866483252] [2024-11-09 15:14:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:14:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866483252] [2024-11-09 15:14:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866483252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489915722] [2024-11-09 15:14:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:01,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:01,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:01,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:14:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:01,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:14:01,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:14:01,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:14:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489915722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:01,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:01,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2024-11-09 15:14:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149599354] [2024-11-09 15:14:01,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:01,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:14:01,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:14:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:14:01,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-11-09 15:14:01,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 795 flow. Second operand has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2024-11-09 15:14:01,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:01,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-11-09 15:14:01,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:02,193 INFO L124 PetriNetUnfolderBase]: 2414/3844 cut-off events. [2024-11-09 15:14:02,193 INFO L125 PetriNetUnfolderBase]: For 3737/3811 co-relation queries the response was YES. [2024-11-09 15:14:02,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 3844 events. 2414/3844 cut-off events. For 3737/3811 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18705 event pairs, 1001 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 10582. Up to 1350 conditions per place. [2024-11-09 15:14:02,213 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 134 selfloop transitions, 66 changer transitions 12/221 dead transitions. [2024-11-09 15:14:02,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 221 transitions, 1587 flow [2024-11-09 15:14:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:14:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:14:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 340 transitions. [2024-11-09 15:14:02,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384180790960452 [2024-11-09 15:14:02,214 INFO L175 Difference]: Start difference. First operand has 101 places, 137 transitions, 795 flow. Second operand 15 states and 340 transitions. [2024-11-09 15:14:02,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 221 transitions, 1587 flow [2024-11-09 15:14:02,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 221 transitions, 1455 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:02,220 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 914 flow [2024-11-09 15:14:02,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=914, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-11-09 15:14:02,221 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2024-11-09 15:14:02,221 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 914 flow [2024-11-09 15:14:02,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2024-11-09 15:14:02,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:02,221 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:02,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:14:02,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:02,422 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:02,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1199603103, now seen corresponding path program 1 times [2024-11-09 15:14:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698757966] [2024-11-09 15:14:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:14:02,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698757966] [2024-11-09 15:14:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698757966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050723707] [2024-11-09 15:14:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:02,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:02,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:14:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:02,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:02,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:14:02,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:14:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050723707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:02,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:02,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:14:02,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749322225] [2024-11-09 15:14:02,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:02,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:02,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:14:02,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 914 flow. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2024-11-09 15:14:02,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:02,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:14:02,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:03,170 INFO L124 PetriNetUnfolderBase]: 5411/8324 cut-off events. [2024-11-09 15:14:03,170 INFO L125 PetriNetUnfolderBase]: For 5267/5357 co-relation queries the response was YES. [2024-11-09 15:14:03,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21342 conditions, 8324 events. 5411/8324 cut-off events. For 5267/5357 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 43113 event pairs, 1384 based on Foata normal form. 444/7458 useless extension candidates. Maximal degree in co-relation 21244. Up to 3314 conditions per place. [2024-11-09 15:14:03,198 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 337 selfloop transitions, 13 changer transitions 0/358 dead transitions. [2024-11-09 15:14:03,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 358 transitions, 2388 flow [2024-11-09 15:14:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 364 transitions. [2024-11-09 15:14:03,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6169491525423729 [2024-11-09 15:14:03,199 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 914 flow. Second operand 10 states and 364 transitions. [2024-11-09 15:14:03,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 358 transitions, 2388 flow [2024-11-09 15:14:03,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 358 transitions, 2282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 15:14:03,207 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 882 flow [2024-11-09 15:14:03,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=882, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-11-09 15:14:03,208 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2024-11-09 15:14:03,208 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 882 flow [2024-11-09 15:14:03,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2024-11-09 15:14:03,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:03,208 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:03,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:03,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:14:03,409 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:03,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2120174461, now seen corresponding path program 2 times [2024-11-09 15:14:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249502541] [2024-11-09 15:14:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 15:14:03,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:03,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249502541] [2024-11-09 15:14:03,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249502541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136665175] [2024-11-09 15:14:03,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:03,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:03,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:03,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:03,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:14:03,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:03,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:03,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:03,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:14:03,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:14:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136665175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:03,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 11 [2024-11-09 15:14:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749458914] [2024-11-09 15:14:03,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:03,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:03,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:03,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:03,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:14:03,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 882 flow. Second operand has 12 states, 12 states have (on average 25.666666666666668) internal successors, (308), 12 states have internal predecessors, (308), 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) [2024-11-09 15:14:03,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:03,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:14:03,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:04,382 INFO L124 PetriNetUnfolderBase]: 3932/6095 cut-off events. [2024-11-09 15:14:04,382 INFO L125 PetriNetUnfolderBase]: For 6534/6652 co-relation queries the response was YES. [2024-11-09 15:14:04,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17586 conditions, 6095 events. 3932/6095 cut-off events. For 6534/6652 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 29512 event pairs, 1453 based on Foata normal form. 148/5550 useless extension candidates. Maximal degree in co-relation 17487. Up to 2780 conditions per place. [2024-11-09 15:14:04,399 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 81 selfloop transitions, 46 changer transitions 82/217 dead transitions. [2024-11-09 15:14:04,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 217 transitions, 1525 flow [2024-11-09 15:14:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 15:14:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 15:14:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 439 transitions. [2024-11-09 15:14:04,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314769975786925 [2024-11-09 15:14:04,400 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 882 flow. Second operand 14 states and 439 transitions. [2024-11-09 15:14:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 217 transitions, 1525 flow [2024-11-09 15:14:04,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 217 transitions, 1497 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 15:14:04,411 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 800 flow [2024-11-09 15:14:04,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=800, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-11-09 15:14:04,411 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-11-09 15:14:04,411 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 800 flow [2024-11-09 15:14:04,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.666666666666668) internal successors, (308), 12 states have internal predecessors, (308), 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) [2024-11-09 15:14:04,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:04,412 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:04,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:14:04,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:14:04,615 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:04,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1222106111, now seen corresponding path program 1 times [2024-11-09 15:14:04,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:04,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289481267] [2024-11-09 15:14:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:04,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 15:14:04,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:04,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289481267] [2024-11-09 15:14:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289481267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:04,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735816772] [2024-11-09 15:14:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:04,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:04,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:04,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:14:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:04,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:04,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 15:14:04,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 15:14:04,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735816772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:04,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:14:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389802028] [2024-11-09 15:14:04,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:04,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:04,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:14:04,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2024-11-09 15:14:04,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:04,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:14:04,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:05,480 INFO L124 PetriNetUnfolderBase]: 5081/7799 cut-off events. [2024-11-09 15:14:05,480 INFO L125 PetriNetUnfolderBase]: For 10530/10530 co-relation queries the response was YES. [2024-11-09 15:14:05,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23188 conditions, 7799 events. 5081/7799 cut-off events. For 10530/10530 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 41009 event pairs, 935 based on Foata normal form. 438/7655 useless extension candidates. Maximal degree in co-relation 23087. Up to 2354 conditions per place. [2024-11-09 15:14:05,508 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 327 selfloop transitions, 9 changer transitions 0/343 dead transitions. [2024-11-09 15:14:05,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 343 transitions, 2552 flow [2024-11-09 15:14:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 366 transitions. [2024-11-09 15:14:05,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6203389830508474 [2024-11-09 15:14:05,509 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 800 flow. Second operand 10 states and 366 transitions. [2024-11-09 15:14:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 343 transitions, 2552 flow [2024-11-09 15:14:05,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 343 transitions, 2164 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-11-09 15:14:05,518 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 702 flow [2024-11-09 15:14:05,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=702, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-11-09 15:14:05,518 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-11-09 15:14:05,518 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 702 flow [2024-11-09 15:14:05,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2024-11-09 15:14:05,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:05,519 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:05,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:05,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:05,719 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:14:05,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1157355752, now seen corresponding path program 2 times [2024-11-09 15:14:05,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:05,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875697162] [2024-11-09 15:14:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:05,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 15:14:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875697162] [2024-11-09 15:14:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875697162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762988936] [2024-11-09 15:14:05,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:05,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:05,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:14:05,923 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:05,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:05,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:05,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 15:14:05,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 15:14:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762988936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:06,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:06,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-09 15:14:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634016503] [2024-11-09 15:14:06,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:06,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:14:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:06,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:14:06,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:14:06,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-11-09 15:14:06,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 702 flow. Second operand has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 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) [2024-11-09 15:14:06,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:06,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-11-09 15:14:06,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:07,136 INFO L124 PetriNetUnfolderBase]: 9301/14670 cut-off events. [2024-11-09 15:14:07,136 INFO L125 PetriNetUnfolderBase]: For 19872/19872 co-relation queries the response was YES. [2024-11-09 15:14:07,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42125 conditions, 14670 events. 9301/14670 cut-off events. For 19872/19872 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 86462 event pairs, 3478 based on Foata normal form. 292/12571 useless extension candidates. Maximal degree in co-relation 42033. Up to 3440 conditions per place. [2024-11-09 15:14:07,168 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 0 selfloop transitions, 0 changer transitions 219/219 dead transitions. [2024-11-09 15:14:07,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 219 transitions, 1498 flow [2024-11-09 15:14:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 15:14:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 15:14:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 470 transitions. [2024-11-09 15:14:07,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4978813559322034 [2024-11-09 15:14:07,169 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 702 flow. Second operand 16 states and 470 transitions. [2024-11-09 15:14:07,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 219 transitions, 1498 flow [2024-11-09 15:14:07,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 1458 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-09 15:14:07,206 INFO L231 Difference]: Finished difference. Result has 110 places, 0 transitions, 0 flow [2024-11-09 15:14:07,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=110, PETRI_TRANSITIONS=0} [2024-11-09 15:14:07,206 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-11-09 15:14:07,207 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 0 transitions, 0 flow [2024-11-09 15:14:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 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) [2024-11-09 15:14:07,209 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-11-09 15:14:07,210 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-11-09 15:14:07,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-11-09 15:14:07,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-11-09 15:14:07,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-11-09 15:14:07,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-11-09 15:14:07,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 15:14:07,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:07,412 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:07,417 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:14:07,417 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:14:07,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:14:07 BasicIcfg [2024-11-09 15:14:07,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:14:07,420 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:14:07,420 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:14:07,420 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:14:07,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:51" (3/4) ... [2024-11-09 15:14:07,422 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:14:07,423 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 15:14:07,423 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 15:14:07,423 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-09 15:14:07,429 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 199 nodes and edges [2024-11-09 15:14:07,429 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-09 15:14:07,429 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 15:14:07,430 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 15:14:07,514 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:14:07,514 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:14:07,514 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:14:07,515 INFO L158 Benchmark]: Toolchain (without parser) took 17076.15ms. Allocated memory was 180.4MB in the beginning and 507.5MB in the end (delta: 327.2MB). Free memory was 111.9MB in the beginning and 140.5MB in the end (delta: -28.5MB). Peak memory consumption was 300.2MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,515 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:14:07,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.48ms. Allocated memory is still 180.4MB. Free memory was 111.8MB in the beginning and 98.0MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.73ms. Allocated memory is still 180.4MB. Free memory was 98.0MB in the beginning and 96.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,515 INFO L158 Benchmark]: Boogie Preprocessor took 87.85ms. Allocated memory is still 180.4MB. Free memory was 96.0MB in the beginning and 150.2MB in the end (delta: -54.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,516 INFO L158 Benchmark]: RCFGBuilder took 631.50ms. Allocated memory is still 180.4MB. Free memory was 150.2MB in the beginning and 80.3MB in the end (delta: 69.9MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,516 INFO L158 Benchmark]: TraceAbstraction took 15956.80ms. Allocated memory was 180.4MB in the beginning and 507.5MB in the end (delta: 327.2MB). Free memory was 79.5MB in the beginning and 147.8MB in the end (delta: -68.3MB). Peak memory consumption was 310.7MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,516 INFO L158 Benchmark]: Witness Printer took 94.13ms. Allocated memory is still 507.5MB. Free memory was 146.8MB in the beginning and 140.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 15:14:07,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.48ms. Allocated memory is still 180.4MB. Free memory was 111.8MB in the beginning and 98.0MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.73ms. Allocated memory is still 180.4MB. Free memory was 98.0MB in the beginning and 96.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.85ms. Allocated memory is still 180.4MB. Free memory was 96.0MB in the beginning and 150.2MB in the end (delta: -54.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 631.50ms. Allocated memory is still 180.4MB. Free memory was 150.2MB in the beginning and 80.3MB in the end (delta: 69.9MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15956.80ms. Allocated memory was 180.4MB in the beginning and 507.5MB in the end (delta: 327.2MB). Free memory was 79.5MB in the beginning and 147.8MB in the end (delta: -68.3MB). Peak memory consumption was 310.7MB. Max. memory is 16.1GB. * Witness Printer took 94.13ms. Allocated memory is still 507.5MB. Free memory was 146.8MB in the beginning and 140.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 77 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.9s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2543 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2390 mSDsluCounter, 2656 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2538 mSDsCounter, 667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7828 IncrementalHoareTripleChecker+Invalid, 8495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 667 mSolverCounterUnsat, 118 mSDtfsCounter, 7828 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=10, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 688 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 915 ConstructedInterpolants, 0 QuantifiedInterpolants, 2465 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1976 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 649/820 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 15:14:07,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE