./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons.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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:00:35,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:00:35,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:00:35,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:00:35,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:00:35,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:00:35,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:00:35,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:00:35,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:00:35,889 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:00:35,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:00:35,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:00:35,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:00:35,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:00:35,891 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:00:35,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:00:35,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:00:35,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:00:35,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:00:35,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:00:35,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:00:35,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:00:35,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:00:35,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:00:35,897 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:00:35,898 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:00:35,898 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:00:35,898 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:00:35,898 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:00:35,899 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:00:35,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:00:35,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:00:35,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:00:35,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:00:35,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:35,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:00:35,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:00:35,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:00:35,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:00:35,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:00:35,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:00:35,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:00:35,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:00:35,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:00:35,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-23 02:00:36,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:00:36,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:00:36,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:00:36,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:00:36,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:00:36,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-23 02:00:37,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:00:37,761 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:00:37,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-23 02:00:37,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bae1ed4d/d5118b5ab3d14795a2fb175e859b12bd/FLAGb069d91ab [2024-11-23 02:00:37,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bae1ed4d/d5118b5ab3d14795a2fb175e859b12bd [2024-11-23 02:00:37,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:00:37,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:00:37,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:37,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:00:37,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:00:37,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:37" (1/1) ... [2024-11-23 02:00:37,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50334ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:37, skipping insertion in model container [2024-11-23 02:00:37,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:37" (1/1) ... [2024-11-23 02:00:37,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:00:38,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:38,016 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:00:38,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:38,059 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:00:38,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38 WrapperNode [2024-11-23 02:00:38,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:38,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:38,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:00:38,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:00:38,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,140 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 168 [2024-11-23 02:00:38,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:38,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:00:38,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:00:38,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:00:38,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,216 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-23 02:00:38,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:00:38,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:00:38,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:00:38,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:00:38,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (1/1) ... [2024-11-23 02:00:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:38,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:38,307 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) [2024-11-23 02:00:38,310 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 [2024-11-23 02:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 02:00:38,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 02:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 02:00:38,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 02:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 02:00:38,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:00:38,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 02:00:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 02:00:38,355 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:00:38,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:00:38,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:00:38,698 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:00:38,698 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:00:38,875 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:00:38,875 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 02:00:38,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:38 BoogieIcfgContainer [2024-11-23 02:00:38,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:00:38,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:00:38,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:00:38,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:00:38,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:00:37" (1/3) ... [2024-11-23 02:00:38,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55291573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:38, skipping insertion in model container [2024-11-23 02:00:38,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:38" (2/3) ... [2024-11-23 02:00:38,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55291573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:38, skipping insertion in model container [2024-11-23 02:00:38,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:38" (3/3) ... [2024-11-23 02:00:38,884 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-23 02:00:38,896 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:00:38,896 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-23 02:00:38,896 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:00:38,947 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 02:00:38,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 119 flow [2024-11-23 02:00:39,006 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-23 02:00:39,006 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 02:00:39,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 4/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 126 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-23 02:00:39,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 119 flow [2024-11-23 02:00:39,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 98 flow [2024-11-23 02:00:39,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:00:39,029 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;@18d73cfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:00:39,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-23 02:00:39,032 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:00:39,032 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 02:00:39,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:00:39,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:39,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 02:00:39,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:39,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 500006, now seen corresponding path program 1 times [2024-11-23 02:00:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:39,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093093373] [2024-11-23 02:00:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:39,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093093373] [2024-11-23 02:00:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093093373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:39,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138203344] [2024-11-23 02:00:39,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:39,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:39,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:39,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 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) [2024-11-23 02:00:39,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:39,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:39,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:39,532 INFO L124 PetriNetUnfolderBase]: 777/1391 cut-off events. [2024-11-23 02:00:39,533 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-23 02:00:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1391 events. 777/1391 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8374 event pairs, 617 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 2550. Up to 1131 conditions per place. [2024-11-23 02:00:39,545 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-23 02:00:39,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 146 flow [2024-11-23 02:00:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-23 02:00:39,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-23 02:00:39,558 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-11-23 02:00:39,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 146 flow [2024-11-23 02:00:39,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:39,563 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 94 flow [2024-11-23 02:00:39,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-23 02:00:39,570 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-23 02:00:39,570 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 94 flow [2024-11-23 02:00:39,571 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) [2024-11-23 02:00:39,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:39,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:00:39,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:00:39,571 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:39,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 15500688, now seen corresponding path program 1 times [2024-11-23 02:00:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:39,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647963815] [2024-11-23 02:00:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:39,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647963815] [2024-11-23 02:00:39,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647963815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:39,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:39,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:39,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369957361] [2024-11-23 02:00:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:39,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:39,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:39,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:39,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 94 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) [2024-11-23 02:00:39,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:39,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:39,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:39,847 INFO L124 PetriNetUnfolderBase]: 778/1395 cut-off events. [2024-11-23 02:00:39,847 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 02:00:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 1395 events. 778/1395 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8401 event pairs, 617 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 2641. Up to 1136 conditions per place. [2024-11-23 02:00:39,855 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-23 02:00:39,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 166 flow [2024-11-23 02:00:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-23 02:00:39,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-11-23 02:00:39,858 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 94 flow. Second operand 4 states and 95 transitions. [2024-11-23 02:00:39,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 166 flow [2024-11-23 02:00:39,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:39,860 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 113 flow [2024-11-23 02:00:39,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-23 02:00:39,861 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-11-23 02:00:39,861 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 113 flow [2024-11-23 02:00:39,861 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) [2024-11-23 02:00:39,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:39,862 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 02:00:39,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 02:00:39,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:39,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2074985736, now seen corresponding path program 1 times [2024-11-23 02:00:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:39,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46181984] [2024-11-23 02:00:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46181984] [2024-11-23 02:00:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46181984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:39,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662351688] [2024-11-23 02:00:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:39,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:39,940 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) [2024-11-23 02:00:39,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 02:00:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:39,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:40,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:40,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662351688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:40,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:40,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 02:00:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105658838] [2024-11-23 02:00:40,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:40,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 02:00:40,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:00:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:00:40,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:40,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 113 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) [2024-11-23 02:00:40,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:40,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:40,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:40,268 INFO L124 PetriNetUnfolderBase]: 781/1407 cut-off events. [2024-11-23 02:00:40,269 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 02:00:40,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1407 events. 781/1407 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8527 event pairs, 617 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 2648. Up to 1139 conditions per place. [2024-11-23 02:00:40,275 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-11-23 02:00:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 227 flow [2024-11-23 02:00:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-11-23 02:00:40,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4122448979591837 [2024-11-23 02:00:40,277 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 113 flow. Second operand 10 states and 202 transitions. [2024-11-23 02:00:40,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 227 flow [2024-11-23 02:00:40,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:40,279 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 190 flow [2024-11-23 02:00:40,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-23 02:00:40,280 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-23 02:00:40,280 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 190 flow [2024-11-23 02:00:40,280 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) [2024-11-23 02:00:40,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:40,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:40,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:40,481 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 [2024-11-23 02:00:40,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:40,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1441425958, now seen corresponding path program 1 times [2024-11-23 02:00:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067073534] [2024-11-23 02:00:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:40,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:40,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067073534] [2024-11-23 02:00:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067073534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:40,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398425916] [2024-11-23 02:00:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:40,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:40,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:40,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-23 02:00:40,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:40,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:40,713 INFO L124 PetriNetUnfolderBase]: 897/1653 cut-off events. [2024-11-23 02:00:40,713 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-23 02:00:40,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1653 events. 897/1653 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10024 event pairs, 733 based on Foata normal form. 34/1357 useless extension candidates. Maximal degree in co-relation 3172. Up to 1143 conditions per place. [2024-11-23 02:00:40,722 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 35 selfloop transitions, 2 changer transitions 14/65 dead transitions. [2024-11-23 02:00:40,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 324 flow [2024-11-23 02:00:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-23 02:00:40,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-23 02:00:40,724 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 190 flow. Second operand 4 states and 118 transitions. [2024-11-23 02:00:40,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 324 flow [2024-11-23 02:00:40,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 294 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:40,728 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 168 flow [2024-11-23 02:00:40,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-23 02:00:40,729 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-23 02:00:40,729 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 168 flow [2024-11-23 02:00:40,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-23 02:00:40,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:40,730 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:40,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 02:00:40,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:40,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash -279816382, now seen corresponding path program 1 times [2024-11-23 02:00:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:40,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188860790] [2024-11-23 02:00:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:40,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188860790] [2024-11-23 02:00:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188860790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600999547] [2024-11-23 02:00:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:40,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:40,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:40,859 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) [2024-11-23 02:00:40,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 02:00:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:40,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:40,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:40,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600999547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:40,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:40,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-23 02:00:40,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171737794] [2024-11-23 02:00:40,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:40,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 02:00:40,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:40,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-23 02:00:40,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:40,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:41,045 INFO L124 PetriNetUnfolderBase]: 571/1059 cut-off events. [2024-11-23 02:00:41,046 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-23 02:00:41,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 1059 events. 571/1059 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5848 event pairs, 456 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 2128. Up to 849 conditions per place. [2024-11-23 02:00:41,051 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-11-23 02:00:41,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 230 flow [2024-11-23 02:00:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:00:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:00:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-23 02:00:41,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-23 02:00:41,053 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 168 flow. Second operand 3 states and 80 transitions. [2024-11-23 02:00:41,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 230 flow [2024-11-23 02:00:41,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:41,055 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 158 flow [2024-11-23 02:00:41,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-23 02:00:41,055 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-23 02:00:41,055 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 158 flow [2024-11-23 02:00:41,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-23 02:00:41,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:41,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:41,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:41,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1679413092, now seen corresponding path program 1 times [2024-11-23 02:00:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715448802] [2024-11-23 02:00:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715448802] [2024-11-23 02:00:41,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715448802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:41,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454614483] [2024-11-23 02:00:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:41,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:41,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-23 02:00:41,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-23 02:00:41,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:41,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-23 02:00:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:41,463 INFO L124 PetriNetUnfolderBase]: 784/1423 cut-off events. [2024-11-23 02:00:41,463 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-23 02:00:41,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 1423 events. 784/1423 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8177 event pairs, 296 based on Foata normal form. 44/1184 useless extension candidates. Maximal degree in co-relation 2854. Up to 626 conditions per place. [2024-11-23 02:00:41,470 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 58 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-11-23 02:00:41,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 342 flow [2024-11-23 02:00:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-23 02:00:41,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-23 02:00:41,471 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 158 flow. Second operand 4 states and 112 transitions. [2024-11-23 02:00:41,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 342 flow [2024-11-23 02:00:41,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:41,474 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 170 flow [2024-11-23 02:00:41,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-23 02:00:41,475 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-23 02:00:41,476 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 170 flow [2024-11-23 02:00:41,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-23 02:00:41,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:41,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:00:41,477 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:41,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1295344994, now seen corresponding path program 1 times [2024-11-23 02:00:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763223835] [2024-11-23 02:00:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763223835] [2024-11-23 02:00:41,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763223835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:41,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951654606] [2024-11-23 02:00:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:41,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:00:41,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:41,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-23 02:00:41,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:41,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:41,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:41,651 INFO L124 PetriNetUnfolderBase]: 687/1260 cut-off events. [2024-11-23 02:00:41,651 INFO L125 PetriNetUnfolderBase]: For 332/363 co-relation queries the response was YES. [2024-11-23 02:00:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1260 events. 687/1260 cut-off events. For 332/363 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6780 event pairs, 220 based on Foata normal form. 49/1183 useless extension candidates. Maximal degree in co-relation 2887. Up to 782 conditions per place. [2024-11-23 02:00:41,655 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 43 selfloop transitions, 2 changer transitions 4/62 dead transitions. [2024-11-23 02:00:41,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 306 flow [2024-11-23 02:00:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:00:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:00:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-23 02:00:41,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-23 02:00:41,657 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 170 flow. Second operand 3 states and 91 transitions. [2024-11-23 02:00:41,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 306 flow [2024-11-23 02:00:41,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:41,662 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 179 flow [2024-11-23 02:00:41,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-23 02:00:41,663 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-23 02:00:41,663 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 179 flow [2024-11-23 02:00:41,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-23 02:00:41,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:41,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 02:00:41,664 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:41,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 522198821, now seen corresponding path program 1 times [2024-11-23 02:00:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737935530] [2024-11-23 02:00:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737935530] [2024-11-23 02:00:41,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737935530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:41,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:41,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835921078] [2024-11-23 02:00:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:41,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:41,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:41,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-23 02:00:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:41,926 INFO L124 PetriNetUnfolderBase]: 687/1302 cut-off events. [2024-11-23 02:00:41,927 INFO L125 PetriNetUnfolderBase]: For 473/497 co-relation queries the response was YES. [2024-11-23 02:00:41,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 1302 events. 687/1302 cut-off events. For 473/497 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7378 event pairs, 167 based on Foata normal form. 24/1196 useless extension candidates. Maximal degree in co-relation 2942. Up to 532 conditions per place. [2024-11-23 02:00:41,932 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 52 selfloop transitions, 6 changer transitions 3/73 dead transitions. [2024-11-23 02:00:41,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 363 flow [2024-11-23 02:00:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-23 02:00:41,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-23 02:00:41,933 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 179 flow. Second operand 5 states and 129 transitions. [2024-11-23 02:00:41,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 363 flow [2024-11-23 02:00:41,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 351 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:41,935 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 179 flow [2024-11-23 02:00:41,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-11-23 02:00:41,936 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-11-23 02:00:41,936 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 179 flow [2024-11-23 02:00:41,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-23 02:00:41,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,936 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 02:00:41,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 02:00:41,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:41,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,937 INFO L85 PathProgramCache]: Analyzing trace with hash -278817904, now seen corresponding path program 2 times [2024-11-23 02:00:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201526630] [2024-11-23 02:00:41,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:41,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201526630] [2024-11-23 02:00:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201526630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285351770] [2024-11-23 02:00:41,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:41,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:41,968 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) [2024-11-23 02:00:41,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 02:00:42,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:42,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:42,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:00:42,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:42,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285351770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:42,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:42,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 02:00:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760426434] [2024-11-23 02:00:42,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:42,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:42,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:42,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:42,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-23 02:00:42,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:42,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:42,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:42,155 INFO L124 PetriNetUnfolderBase]: 529/1013 cut-off events. [2024-11-23 02:00:42,155 INFO L125 PetriNetUnfolderBase]: For 578/585 co-relation queries the response was YES. [2024-11-23 02:00:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 1013 events. 529/1013 cut-off events. For 578/585 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5341 event pairs, 403 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 2397. Up to 790 conditions per place. [2024-11-23 02:00:42,159 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-11-23 02:00:42,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 241 flow [2024-11-23 02:00:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-23 02:00:42,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-23 02:00:42,161 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 179 flow. Second operand 4 states and 88 transitions. [2024-11-23 02:00:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 241 flow [2024-11-23 02:00:42,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 219 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-23 02:00:42,162 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 177 flow [2024-11-23 02:00:42,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-23 02:00:42,163 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-23 02:00:42,163 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 177 flow [2024-11-23 02:00:42,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-23 02:00:42,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:42,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:42,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 02:00:42,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:42,368 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:42,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1746797091, now seen corresponding path program 1 times [2024-11-23 02:00:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:42,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278662039] [2024-11-23 02:00:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:42,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278662039] [2024-11-23 02:00:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278662039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367195939] [2024-11-23 02:00:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:42,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:42,889 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) [2024-11-23 02:00:42,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 02:00:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:00:42,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:43,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:00:43,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 02:00:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:43,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:43,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 02:00:43,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 02:00:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367195939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:44,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-23 02:00:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890003229] [2024-11-23 02:00:44,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:44,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 02:00:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 02:00:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-23 02:00:44,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:44,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 177 flow. Second operand has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 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) [2024-11-23 02:00:44,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:45,597 INFO L124 PetriNetUnfolderBase]: 1402/2626 cut-off events. [2024-11-23 02:00:45,598 INFO L125 PetriNetUnfolderBase]: For 596/669 co-relation queries the response was YES. [2024-11-23 02:00:45,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 2626 events. 1402/2626 cut-off events. For 596/669 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16188 event pairs, 331 based on Foata normal form. 73/2495 useless extension candidates. Maximal degree in co-relation 5761. Up to 754 conditions per place. [2024-11-23 02:00:45,607 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 113 selfloop transitions, 23 changer transitions 8/155 dead transitions. [2024-11-23 02:00:45,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 155 transitions, 783 flow [2024-11-23 02:00:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 02:00:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 02:00:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 375 transitions. [2024-11-23 02:00:45,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-23 02:00:45,609 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 177 flow. Second operand 15 states and 375 transitions. [2024-11-23 02:00:45,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 155 transitions, 783 flow [2024-11-23 02:00:45,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 155 transitions, 753 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:45,613 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 269 flow [2024-11-23 02:00:45,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=269, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-23 02:00:45,614 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-11-23 02:00:45,614 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 269 flow [2024-11-23 02:00:45,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 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) [2024-11-23 02:00:45,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:45,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:45,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 02:00:45,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:45,820 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:45,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2124995856, now seen corresponding path program 1 times [2024-11-23 02:00:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:45,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675371994] [2024-11-23 02:00:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:46,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675371994] [2024-11-23 02:00:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675371994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667768206] [2024-11-23 02:00:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:46,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:46,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:46,399 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) [2024-11-23 02:00:46,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 02:00:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:46,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:00:46,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:46,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:46,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:00:46,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-23 02:00:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667768206] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 02:00:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2024-11-23 02:00:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941434073] [2024-11-23 02:00:46,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:46,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-23 02:00:46,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:46,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-23 02:00:46,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:46,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:47,102 INFO L124 PetriNetUnfolderBase]: 1572/2884 cut-off events. [2024-11-23 02:00:47,102 INFO L125 PetriNetUnfolderBase]: For 1944/2025 co-relation queries the response was YES. [2024-11-23 02:00:47,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7392 conditions, 2884 events. 1572/2884 cut-off events. For 1944/2025 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17459 event pairs, 213 based on Foata normal form. 145/2929 useless extension candidates. Maximal degree in co-relation 7376. Up to 767 conditions per place. [2024-11-23 02:00:47,123 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 68 selfloop transitions, 12 changer transitions 4/95 dead transitions. [2024-11-23 02:00:47,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 562 flow [2024-11-23 02:00:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-23 02:00:47,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-11-23 02:00:47,124 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 269 flow. Second operand 5 states and 148 transitions. [2024-11-23 02:00:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 562 flow [2024-11-23 02:00:47,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 551 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:47,131 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 338 flow [2024-11-23 02:00:47,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-11-23 02:00:47,132 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-23 02:00:47,132 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 338 flow [2024-11-23 02:00:47,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-23 02:00:47,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:47,132 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] [2024-11-23 02:00:47,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 02:00:47,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 02:00:47,333 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:47,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1100904541, now seen corresponding path program 1 times [2024-11-23 02:00:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849919010] [2024-11-23 02:00:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:47,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:47,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849919010] [2024-11-23 02:00:47,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849919010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531067429] [2024-11-23 02:00:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:47,457 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) [2024-11-23 02:00:47,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 02:00:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:47,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:47,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:47,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531067429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:47,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:47,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 02:00:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621090211] [2024-11-23 02:00:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:47,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 02:00:47,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:47,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-23 02:00:47,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:47,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:47,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:48,027 INFO L124 PetriNetUnfolderBase]: 3397/6169 cut-off events. [2024-11-23 02:00:48,027 INFO L125 PetriNetUnfolderBase]: For 10194/10329 co-relation queries the response was YES. [2024-11-23 02:00:48,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17923 conditions, 6169 events. 3397/6169 cut-off events. For 10194/10329 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 42069 event pairs, 808 based on Foata normal form. 199/6150 useless extension candidates. Maximal degree in co-relation 17903. Up to 1950 conditions per place. [2024-11-23 02:00:48,057 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 91 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-11-23 02:00:48,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 856 flow [2024-11-23 02:00:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-23 02:00:48,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-11-23 02:00:48,058 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 338 flow. Second operand 4 states and 129 transitions. [2024-11-23 02:00:48,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 856 flow [2024-11-23 02:00:48,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 115 transitions, 840 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:48,088 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 473 flow [2024-11-23 02:00:48,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=473, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-23 02:00:48,088 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2024-11-23 02:00:48,089 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 473 flow [2024-11-23 02:00:48,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-23 02:00:48,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:48,089 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:48,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 02:00:48,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:48,294 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:48,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2081484439, now seen corresponding path program 2 times [2024-11-23 02:00:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:48,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250512176] [2024-11-23 02:00:48,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:48,324 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:48,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:00:48,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:48,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250512176] [2024-11-23 02:00:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250512176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:48,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720450531] [2024-11-23 02:00:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:48,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:48,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:00:48,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-23 02:00:48,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:48,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:00:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:49,112 INFO L124 PetriNetUnfolderBase]: 3301/6077 cut-off events. [2024-11-23 02:00:49,112 INFO L125 PetriNetUnfolderBase]: For 11996/12149 co-relation queries the response was YES. [2024-11-23 02:00:49,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18282 conditions, 6077 events. 3301/6077 cut-off events. For 11996/12149 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 41670 event pairs, 355 based on Foata normal form. 231/6106 useless extension candidates. Maximal degree in co-relation 18259. Up to 2373 conditions per place. [2024-11-23 02:00:49,150 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 77 selfloop transitions, 14 changer transitions 4/106 dead transitions. [2024-11-23 02:00:49,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 786 flow [2024-11-23 02:00:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-23 02:00:49,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-23 02:00:49,151 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 473 flow. Second operand 5 states and 147 transitions. [2024-11-23 02:00:49,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 786 flow [2024-11-23 02:00:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 759 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:49,181 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 468 flow [2024-11-23 02:00:49,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-11-23 02:00:49,182 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 28 predicate places. [2024-11-23 02:00:49,182 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 468 flow [2024-11-23 02:00:49,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-23 02:00:49,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:49,182 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:49,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 02:00:49,183 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:49,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -453552873, now seen corresponding path program 1 times [2024-11-23 02:00:49,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:49,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843888198] [2024-11-23 02:00:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:49,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843888198] [2024-11-23 02:00:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843888198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408325119] [2024-11-23 02:00:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:49,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:49,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:49,265 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) [2024-11-23 02:00:49,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 02:00:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:49,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 02:00:49,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:49,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408325119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:49,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-23 02:00:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40470823] [2024-11-23 02:00:49,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:49,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 02:00:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:00:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:00:49,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:49,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 468 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-11-23 02:00:49,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:49,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:49,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:49,823 INFO L124 PetriNetUnfolderBase]: 2339/4437 cut-off events. [2024-11-23 02:00:49,824 INFO L125 PetriNetUnfolderBase]: For 9114/9229 co-relation queries the response was YES. [2024-11-23 02:00:49,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13028 conditions, 4437 events. 2339/4437 cut-off events. For 9114/9229 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 29371 event pairs, 1647 based on Foata normal form. 119/4341 useless extension candidates. Maximal degree in co-relation 13005. Up to 3008 conditions per place. [2024-11-23 02:00:49,840 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 35 selfloop transitions, 10 changer transitions 30/86 dead transitions. [2024-11-23 02:00:49,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 595 flow [2024-11-23 02:00:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:00:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:00:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-11-23 02:00:49,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-11-23 02:00:49,841 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 468 flow. Second operand 8 states and 184 transitions. [2024-11-23 02:00:49,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 595 flow [2024-11-23 02:00:49,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 562 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:49,847 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 324 flow [2024-11-23 02:00:49,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=324, PETRI_PLACES=78, PETRI_TRANSITIONS=56} [2024-11-23 02:00:49,848 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 29 predicate places. [2024-11-23 02:00:49,848 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 324 flow [2024-11-23 02:00:49,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-11-23 02:00:49,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:49,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:49,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 02:00:50,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:50,053 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:50,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 560903853, now seen corresponding path program 2 times [2024-11-23 02:00:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471443089] [2024-11-23 02:00:50,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:50,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:00:50,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 02:00:50,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471443089] [2024-11-23 02:00:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471443089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388372891] [2024-11-23 02:00:50,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:50,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:50,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:50,215 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) [2024-11-23 02:00:50,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 02:00:50,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:00:50,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:50,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:00:50,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:50,622 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:50,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 02:00:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:50,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:50,709 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:50,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-23 02:00:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388372891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:51,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:51,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 27 [2024-11-23 02:00:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802236636] [2024-11-23 02:00:51,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:51,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 02:00:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 02:00:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-23 02:00:51,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:51,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 56 transitions, 324 flow. Second operand has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 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) [2024-11-23 02:00:51,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:51,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:51,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:53,181 INFO L124 PetriNetUnfolderBase]: 5468/10289 cut-off events. [2024-11-23 02:00:53,181 INFO L125 PetriNetUnfolderBase]: For 21722/22006 co-relation queries the response was YES. [2024-11-23 02:00:53,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29237 conditions, 10289 events. 5468/10289 cut-off events. For 21722/22006 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 77878 event pairs, 372 based on Foata normal form. 622/10609 useless extension candidates. Maximal degree in co-relation 29214. Up to 1521 conditions per place. [2024-11-23 02:00:53,293 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 312 selfloop transitions, 59 changer transitions 8/390 dead transitions. [2024-11-23 02:00:53,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 390 transitions, 2431 flow [2024-11-23 02:00:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 02:00:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-23 02:00:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 874 transitions. [2024-11-23 02:00:53,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405071119356833 [2024-11-23 02:00:53,300 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 324 flow. Second operand 33 states and 874 transitions. [2024-11-23 02:00:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 390 transitions, 2431 flow [2024-11-23 02:00:53,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 390 transitions, 2388 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-23 02:00:53,510 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 940 flow [2024-11-23 02:00:53,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=940, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2024-11-23 02:00:53,510 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 65 predicate places. [2024-11-23 02:00:53,511 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 940 flow [2024-11-23 02:00:53,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 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) [2024-11-23 02:00:53,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:53,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:53,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 02:00:53,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 02:00:53,716 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:53,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1590476411, now seen corresponding path program 3 times [2024-11-23 02:00:53,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:53,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027274056] [2024-11-23 02:00:53,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:00:53,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:53,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 02:00:53,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:53,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:53,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027274056] [2024-11-23 02:00:53,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027274056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:53,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801330929] [2024-11-23 02:00:53,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:00:53,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:53,981 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) [2024-11-23 02:00:53,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 02:00:54,043 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 02:00:54,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:54,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 02:00:54,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:54,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:00:54,316 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:54,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 02:00:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:54,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:54,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-23 02:00:54,924 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-23 02:00:54,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-23 02:00:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801330929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:55,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 27 [2024-11-23 02:00:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718693201] [2024-11-23 02:00:55,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:55,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 02:00:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 02:00:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-23 02:00:55,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:00:55,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 940 flow. Second operand has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 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) [2024-11-23 02:00:55,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:55,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:00:55,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:57,590 INFO L124 PetriNetUnfolderBase]: 6172/11827 cut-off events. [2024-11-23 02:00:57,590 INFO L125 PetriNetUnfolderBase]: For 73786/74274 co-relation queries the response was YES. [2024-11-23 02:00:57,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40920 conditions, 11827 events. 6172/11827 cut-off events. For 73786/74274 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 93153 event pairs, 662 based on Foata normal form. 442/11697 useless extension candidates. Maximal degree in co-relation 40883. Up to 1746 conditions per place. [2024-11-23 02:00:57,662 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 251 selfloop transitions, 60 changer transitions 16/338 dead transitions. [2024-11-23 02:00:57,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 338 transitions, 2686 flow [2024-11-23 02:00:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 02:00:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-23 02:00:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 723 transitions. [2024-11-23 02:00:57,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269679300291545 [2024-11-23 02:00:57,667 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 940 flow. Second operand 28 states and 723 transitions. [2024-11-23 02:00:57,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 338 transitions, 2686 flow [2024-11-23 02:00:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 338 transitions, 2411 flow, removed 118 selfloop flow, removed 9 redundant places. [2024-11-23 02:00:57,796 INFO L231 Difference]: Finished difference. Result has 143 places, 113 transitions, 1065 flow [2024-11-23 02:00:57,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1065, PETRI_PLACES=143, PETRI_TRANSITIONS=113} [2024-11-23 02:00:57,797 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 94 predicate places. [2024-11-23 02:00:57,797 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 113 transitions, 1065 flow [2024-11-23 02:00:57,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 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) [2024-11-23 02:00:57,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:57,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:57,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 02:00:57,998 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,SelfDestructingSolverStorable15 [2024-11-23 02:00:57,998 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:00:57,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash 235296114, now seen corresponding path program 1 times [2024-11-23 02:00:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:57,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538279498] [2024-11-23 02:00:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:58,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:58,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538279498] [2024-11-23 02:00:58,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538279498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:58,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646069629] [2024-11-23 02:00:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:58,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:58,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:58,568 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) [2024-11-23 02:00:58,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 02:00:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:58,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 02:00:58,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:59,157 INFO L349 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2024-11-23 02:00:59,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 19 [2024-11-23 02:00:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:59,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:59,453 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-23 02:00:59,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 43 [2024-11-23 02:00:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646069629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:59,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:59,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-23 02:00:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374649345] [2024-11-23 02:00:59,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:59,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 02:00:59,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 02:00:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 02:01:00,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:01:00,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 113 transitions, 1065 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:00,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:00,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:01:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:04,629 INFO L124 PetriNetUnfolderBase]: 11031/21498 cut-off events. [2024-11-23 02:01:04,630 INFO L125 PetriNetUnfolderBase]: For 104025/104573 co-relation queries the response was YES. [2024-11-23 02:01:04,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73748 conditions, 21498 events. 11031/21498 cut-off events. For 104025/104573 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 175767 event pairs, 718 based on Foata normal form. 1614/22462 useless extension candidates. Maximal degree in co-relation 73700. Up to 6755 conditions per place. [2024-11-23 02:01:04,848 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 321 selfloop transitions, 108 changer transitions 48/488 dead transitions. [2024-11-23 02:01:04,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 488 transitions, 4082 flow [2024-11-23 02:01:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 02:01:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-23 02:01:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 938 transitions. [2024-11-23 02:01:04,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-11-23 02:01:04,851 INFO L175 Difference]: Start difference. First operand has 143 places, 113 transitions, 1065 flow. Second operand 37 states and 938 transitions. [2024-11-23 02:01:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 488 transitions, 4082 flow [2024-11-23 02:01:05,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 488 transitions, 3872 flow, removed 43 selfloop flow, removed 18 redundant places. [2024-11-23 02:01:05,334 INFO L231 Difference]: Finished difference. Result has 170 places, 193 transitions, 2312 flow [2024-11-23 02:01:05,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2312, PETRI_PLACES=170, PETRI_TRANSITIONS=193} [2024-11-23 02:01:05,336 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 121 predicate places. [2024-11-23 02:01:05,336 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 193 transitions, 2312 flow [2024-11-23 02:01:05,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:05,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:05,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:05,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 02:01:05,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 02:01:05,538 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:01:05,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2125079228, now seen corresponding path program 2 times [2024-11-23 02:01:05,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:05,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889315735] [2024-11-23 02:01:05,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:05,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:05,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:06,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889315735] [2024-11-23 02:01:06,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889315735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789559385] [2024-11-23 02:01:06,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:06,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:06,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:06,212 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) [2024-11-23 02:01:06,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 02:01:06,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:06,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:06,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 02:01:06,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:06,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:07,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:07,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-23 02:01:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:07,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789559385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:07,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-23 02:01:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137525699] [2024-11-23 02:01:07,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:07,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 02:01:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 02:01:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 02:01:07,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:01:07,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 193 transitions, 2312 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:07,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:07,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:01:07,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:12,106 INFO L124 PetriNetUnfolderBase]: 13169/25964 cut-off events. [2024-11-23 02:01:12,107 INFO L125 PetriNetUnfolderBase]: For 162381/163043 co-relation queries the response was YES. [2024-11-23 02:01:12,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95815 conditions, 25964 events. 13169/25964 cut-off events. For 162381/163043 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 223314 event pairs, 2048 based on Foata normal form. 604/25668 useless extension candidates. Maximal degree in co-relation 95762. Up to 14177 conditions per place. [2024-11-23 02:01:12,305 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 375 selfloop transitions, 73 changer transitions 52/511 dead transitions. [2024-11-23 02:01:12,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 511 transitions, 4998 flow [2024-11-23 02:01:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 02:01:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-23 02:01:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 846 transitions. [2024-11-23 02:01:12,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-11-23 02:01:12,307 INFO L175 Difference]: Start difference. First operand has 170 places, 193 transitions, 2312 flow. Second operand 33 states and 846 transitions. [2024-11-23 02:01:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 511 transitions, 4998 flow [2024-11-23 02:01:13,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 511 transitions, 4470 flow, removed 245 selfloop flow, removed 10 redundant places. [2024-11-23 02:01:13,519 INFO L231 Difference]: Finished difference. Result has 202 places, 236 transitions, 2816 flow [2024-11-23 02:01:13,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2816, PETRI_PLACES=202, PETRI_TRANSITIONS=236} [2024-11-23 02:01:13,520 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 153 predicate places. [2024-11-23 02:01:13,520 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 236 transitions, 2816 flow [2024-11-23 02:01:13,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:13,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:13,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:13,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:13,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 02:01:13,721 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:01:13,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2125079227, now seen corresponding path program 4 times [2024-11-23 02:01:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222559169] [2024-11-23 02:01:13,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 02:01:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:13,749 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 02:01:13,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:14,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222559169] [2024-11-23 02:01:14,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222559169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427754732] [2024-11-23 02:01:14,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 02:01:14,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:14,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:14,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 02:01:14,293 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 02:01:14,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:14,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 02:01:14,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:14,864 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:01:14,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 02:01:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:14,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:14,971 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-23 02:01:14,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-23 02:01:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:15,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427754732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:15,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:15,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-23 02:01:15,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694093802] [2024-11-23 02:01:15,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:15,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 02:01:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 02:01:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 02:01:15,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:01:15,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 236 transitions, 2816 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:15,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:15,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:01:15,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:20,656 INFO L124 PetriNetUnfolderBase]: 13562/27311 cut-off events. [2024-11-23 02:01:20,656 INFO L125 PetriNetUnfolderBase]: For 138690/139466 co-relation queries the response was YES. [2024-11-23 02:01:20,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92270 conditions, 27311 events. 13562/27311 cut-off events. For 138690/139466 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 241244 event pairs, 2795 based on Foata normal form. 744/27129 useless extension candidates. Maximal degree in co-relation 92208. Up to 5529 conditions per place. [2024-11-23 02:01:20,957 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 257 selfloop transitions, 141 changer transitions 48/457 dead transitions. [2024-11-23 02:01:20,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 457 transitions, 4609 flow [2024-11-23 02:01:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 02:01:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-23 02:01:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 680 transitions. [2024-11-23 02:01:20,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5139833711262283 [2024-11-23 02:01:20,958 INFO L175 Difference]: Start difference. First operand has 202 places, 236 transitions, 2816 flow. Second operand 27 states and 680 transitions. [2024-11-23 02:01:20,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 457 transitions, 4609 flow [2024-11-23 02:01:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 457 transitions, 4470 flow, removed 43 selfloop flow, removed 15 redundant places. [2024-11-23 02:01:22,103 INFO L231 Difference]: Finished difference. Result has 213 places, 247 transitions, 3132 flow [2024-11-23 02:01:22,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3132, PETRI_PLACES=213, PETRI_TRANSITIONS=247} [2024-11-23 02:01:22,103 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 164 predicate places. [2024-11-23 02:01:22,104 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 247 transitions, 3132 flow [2024-11-23 02:01:22,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 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) [2024-11-23 02:01:22,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:22,109 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:22,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:22,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:22,313 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:01:22,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1846985536, now seen corresponding path program 3 times [2024-11-23 02:01:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063174534] [2024-11-23 02:01:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:01:22,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:22,342 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 02:01:22,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063174534] [2024-11-23 02:01:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063174534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6601725] [2024-11-23 02:01:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:01:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:22,514 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:22,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 02:01:22,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 02:01:22,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:22,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:01:22,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:22,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:22,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:22,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-23 02:01:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6601725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:23,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:23,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-23 02:01:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152079828] [2024-11-23 02:01:23,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:23,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 02:01:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 02:01:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-23 02:01:23,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:01:23,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 247 transitions, 3132 flow. Second operand has 20 states, 20 states have (on average 20.55) internal successors, (411), 20 states have internal predecessors, (411), 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) [2024-11-23 02:01:23,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:23,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:01:23,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:28,212 INFO L124 PetriNetUnfolderBase]: 16910/33763 cut-off events. [2024-11-23 02:01:28,213 INFO L125 PetriNetUnfolderBase]: For 196901/197669 co-relation queries the response was YES. [2024-11-23 02:01:28,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118216 conditions, 33763 events. 16910/33763 cut-off events. For 196901/197669 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 308952 event pairs, 2142 based on Foata normal form. 1258/33713 useless extension candidates. Maximal degree in co-relation 118152. Up to 17364 conditions per place. [2024-11-23 02:01:28,580 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 378 selfloop transitions, 93 changer transitions 20/502 dead transitions. [2024-11-23 02:01:28,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 502 transitions, 5661 flow [2024-11-23 02:01:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 02:01:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-23 02:01:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 588 transitions. [2024-11-23 02:01:28,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-23 02:01:28,586 INFO L175 Difference]: Start difference. First operand has 213 places, 247 transitions, 3132 flow. Second operand 20 states and 588 transitions. [2024-11-23 02:01:28,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 502 transitions, 5661 flow [2024-11-23 02:01:30,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 502 transitions, 5528 flow, removed 26 selfloop flow, removed 21 redundant places. [2024-11-23 02:01:30,032 INFO L231 Difference]: Finished difference. Result has 218 places, 297 transitions, 3985 flow [2024-11-23 02:01:30,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3985, PETRI_PLACES=218, PETRI_TRANSITIONS=297} [2024-11-23 02:01:30,034 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 169 predicate places. [2024-11-23 02:01:30,034 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 297 transitions, 3985 flow [2024-11-23 02:01:30,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.55) internal successors, (411), 20 states have internal predecessors, (411), 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) [2024-11-23 02:01:30,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:30,034 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:30,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 02:01:30,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-23 02:01:30,235 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:01:30,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1092392767, now seen corresponding path program 5 times [2024-11-23 02:01:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740122708] [2024-11-23 02:01:30,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 02:01:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:30,276 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-23 02:01:30,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740122708] [2024-11-23 02:01:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740122708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379113676] [2024-11-23 02:01:30,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 02:01:30,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:30,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:30,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:30,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 02:01:30,971 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-23 02:01:30,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:30,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 02:01:30,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:31,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:31,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:31,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 52 [2024-11-23 02:01:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379113676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:31,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 6] total 29 [2024-11-23 02:01:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52000767] [2024-11-23 02:01:31,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:31,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 02:01:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 02:01:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-11-23 02:01:31,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-23 02:01:31,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 297 transitions, 3985 flow. Second operand has 31 states, 31 states have (on average 17.903225806451612) internal successors, (555), 31 states have internal predecessors, (555), 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) [2024-11-23 02:01:31,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:31,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-23 02:01:31,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:37,915 INFO L124 PetriNetUnfolderBase]: 17892/35506 cut-off events. [2024-11-23 02:01:37,915 INFO L125 PetriNetUnfolderBase]: For 236895/237962 co-relation queries the response was YES. [2024-11-23 02:01:38,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131329 conditions, 35506 events. 17892/35506 cut-off events. For 236895/237962 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 325463 event pairs, 2343 based on Foata normal form. 843/35325 useless extension candidates. Maximal degree in co-relation 131261. Up to 16666 conditions per place. [2024-11-23 02:01:38,388 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 432 selfloop transitions, 95 changer transitions 36/574 dead transitions. [2024-11-23 02:01:38,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 574 transitions, 6715 flow [2024-11-23 02:01:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 02:01:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-23 02:01:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 786 transitions. [2024-11-23 02:01:38,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5174456879526004 [2024-11-23 02:01:38,391 INFO L175 Difference]: Start difference. First operand has 218 places, 297 transitions, 3985 flow. Second operand 31 states and 786 transitions. [2024-11-23 02:01:38,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 574 transitions, 6715 flow [2024-11-23 02:01:41,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 574 transitions, 6453 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-23 02:01:41,073 INFO L231 Difference]: Finished difference. Result has 247 places, 316 transitions, 4323 flow [2024-11-23 02:01:41,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4323, PETRI_PLACES=247, PETRI_TRANSITIONS=316} [2024-11-23 02:01:41,074 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 198 predicate places. [2024-11-23 02:01:41,074 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 316 transitions, 4323 flow [2024-11-23 02:01:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 17.903225806451612) internal successors, (555), 31 states have internal predecessors, (555), 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) [2024-11-23 02:01:41,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:41,075 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:41,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 02:01:41,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:41,275 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 02:01:41,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2123132480, now seen corresponding path program 6 times [2024-11-23 02:01:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970085947] [2024-11-23 02:01:41,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 02:01:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:41,298 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-23 02:01:41,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:41,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:41,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970085947] [2024-11-23 02:01:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970085947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:41,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428279433] [2024-11-23 02:01:41,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 02:01:41,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:41,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:41,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:41,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 02:01:41,422 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-23 02:01:41,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:41,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:01:41,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:41,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:41,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428279433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:41,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:41,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 9 [2024-11-23 02:01:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136548999] [2024-11-23 02:01:41,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:41,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 02:01:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:01:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:01:41,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-23 02:01:41,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 316 transitions, 4323 flow. Second operand has 10 states, 10 states have (on average 21.7) internal successors, (217), 10 states have internal predecessors, (217), 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) [2024-11-23 02:01:41,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:41,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-23 02:01:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:51,631 INFO L124 PetriNetUnfolderBase]: 31179/62431 cut-off events. [2024-11-23 02:01:51,632 INFO L125 PetriNetUnfolderBase]: For 489664/491473 co-relation queries the response was YES. [2024-11-23 02:01:52,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235762 conditions, 62431 events. 31179/62431 cut-off events. For 489664/491473 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 626563 event pairs, 6746 based on Foata normal form. 1053/61238 useless extension candidates. Maximal degree in co-relation 235690. Up to 17206 conditions per place. [2024-11-23 02:01:52,529 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 365 selfloop transitions, 195 changer transitions 0/571 dead transitions. [2024-11-23 02:01:52,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 571 transitions, 8867 flow [2024-11-23 02:01:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:01:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:01:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-23 02:01:52,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6693877551020408 [2024-11-23 02:01:52,531 INFO L175 Difference]: Start difference. First operand has 247 places, 316 transitions, 4323 flow. Second operand 5 states and 164 transitions. [2024-11-23 02:01:52,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 571 transitions, 8867 flow