./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:27:07,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:27:08,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:27:08,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:27:08,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:27:08,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:27:08,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:27:08,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:27:08,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:27:08,094 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:27:08,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:27:08,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:27:08,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:27:08,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:27:08,098 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:27:08,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:27:08,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:27:08,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:27:08,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:27:08,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:27:08,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:27:08,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:27:08,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:27:08,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:27:08,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:27:08,105 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:27:08,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:27:08,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:27:08,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:27:08,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:27:08,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:27:08,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:27:08,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:27:08,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:27:08,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:08,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:27:08,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:27:08,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:27:08,110 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:27:08,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:27:08,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:27:08,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:27:08,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:27:08,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:27:08,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-10 22:27:08,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:27:08,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:27:08,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:27:08,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:27:08,401 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:27:08,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-10 22:27:09,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:27:10,036 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:27:10,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-10 22:27:10,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1bd54c72/227871a96b824385b706b9930482180a/FLAGd32e8a730 [2024-11-10 22:27:10,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1bd54c72/227871a96b824385b706b9930482180a [2024-11-10 22:27:10,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:27:10,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:27:10,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:10,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:27:10,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:27:10,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239b1c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10, skipping insertion in model container [2024-11-10 22:27:10,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:27:10,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:10,680 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:27:10,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:10,731 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:27:10,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10 WrapperNode [2024-11-10 22:27:10,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:10,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:10,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:27:10,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:27:10,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,777 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 269 [2024-11-10 22:27:10,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:10,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:27:10,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:27:10,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:27:10,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,814 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 22:27:10,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:27:10,829 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:27:10,830 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:27:10,830 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:27:10,830 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (1/1) ... [2024-11-10 22:27:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:10,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:10,861 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) [2024-11-10 22:27:10,863 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 [2024-11-10 22:27:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:27:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:27:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:27:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:27:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:27:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:27:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:27:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:27:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:27:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:27:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:27:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:27:10,904 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:27:11,005 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:27:11,007 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:27:11,520 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:27:11,521 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:27:11,866 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:27:11,867 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:27:11,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:11 BoogieIcfgContainer [2024-11-10 22:27:11,868 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:27:11,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:27:11,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:27:11,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:27:11,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:10" (1/3) ... [2024-11-10 22:27:11,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a79f519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:11, skipping insertion in model container [2024-11-10 22:27:11,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:10" (2/3) ... [2024-11-10 22:27:11,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a79f519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:11, skipping insertion in model container [2024-11-10 22:27:11,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:11" (3/3) ... [2024-11-10 22:27:11,879 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-10 22:27:11,895 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:27:11,895 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-10 22:27:11,895 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:27:11,960 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:27:11,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 187 flow [2024-11-10 22:27:12,027 INFO L124 PetriNetUnfolderBase]: 12/80 cut-off events. [2024-11-10 22:27:12,028 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:27:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 12/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 236 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2024-11-10 22:27:12,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 187 flow [2024-11-10 22:27:12,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 78 transitions, 171 flow [2024-11-10 22:27:12,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:27:12,055 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;@345bfc11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:27:12,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-10 22:27:12,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:27:12,060 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:27:12,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:27:12,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:12,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:27:12,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:12,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 22455067, now seen corresponding path program 1 times [2024-11-10 22:27:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820078163] [2024-11-10 22:27:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:12,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820078163] [2024-11-10 22:27:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820078163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098004139] [2024-11-10 22:27:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:12,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:12,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-10 22:27:12,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:12,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:12,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-10 22:27:12,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:13,061 INFO L124 PetriNetUnfolderBase]: 2204/4137 cut-off events. [2024-11-10 22:27:13,061 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-10 22:27:13,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 4137 events. 2204/4137 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31470 event pairs, 1926 based on Foata normal form. 616/3614 useless extension candidates. Maximal degree in co-relation 6974. Up to 3019 conditions per place. [2024-11-10 22:27:13,106 INFO L140 encePairwiseOnDemand]: 60/83 looper letters, 38 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-10 22:27:13,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 249 flow [2024-11-10 22:27:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-10 22:27:13,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512048192771084 [2024-11-10 22:27:13,123 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 171 flow. Second operand 4 states and 183 transitions. [2024-11-10 22:27:13,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 249 flow [2024-11-10 22:27:13,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:13,139 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 198 flow [2024-11-10 22:27:13,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-10 22:27:13,145 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-10 22:27:13,147 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 198 flow [2024-11-10 22:27:13,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:13,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:13,147 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:27:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:27:13,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:13,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1643480532, now seen corresponding path program 1 times [2024-11-10 22:27:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125273597] [2024-11-10 22:27:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:13,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:13,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125273597] [2024-11-10 22:27:13,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125273597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:13,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890559580] [2024-11-10 22:27:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:13,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:13,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:13,358 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) [2024-11-10 22:27:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:27:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:13,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:13,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:13,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890559580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:27:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124705755] [2024-11-10 22:27:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:13,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:13,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-10 22:27:13,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-10 22:27:13,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:13,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-10 22:27:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:14,122 INFO L124 PetriNetUnfolderBase]: 2204/4135 cut-off events. [2024-11-10 22:27:14,122 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 22:27:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 4135 events. 2204/4135 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31443 event pairs, 1926 based on Foata normal form. 2/2998 useless extension candidates. Maximal degree in co-relation 7266. Up to 3009 conditions per place. [2024-11-10 22:27:14,158 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 31 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-10 22:27:14,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 276 flow [2024-11-10 22:27:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-10 22:27:14,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45180722891566266 [2024-11-10 22:27:14,160 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 198 flow. Second operand 6 states and 225 transitions. [2024-11-10 22:27:14,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 276 flow [2024-11-10 22:27:14,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:27:14,163 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 214 flow [2024-11-10 22:27:14,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-10 22:27:14,164 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-10 22:27:14,164 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 214 flow [2024-11-10 22:27:14,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-10 22:27:14,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:14,165 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:27:14,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:27:14,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:14,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:14,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -591710423, now seen corresponding path program 1 times [2024-11-10 22:27:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:14,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417763629] [2024-11-10 22:27:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417763629] [2024-11-10 22:27:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417763629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108348306] [2024-11-10 22:27:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:14,483 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) [2024-11-10 22:27:14,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:27:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:14,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:14,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:14,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108348306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:14,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:14,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:27:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801691692] [2024-11-10 22:27:14,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:14,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-10 22:27:14,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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) [2024-11-10 22:27:14,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:14,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-10 22:27:14,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:15,345 INFO L124 PetriNetUnfolderBase]: 2210/4171 cut-off events. [2024-11-10 22:27:15,346 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-10 22:27:15,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 4171 events. 2210/4171 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 31872 event pairs, 1926 based on Foata normal form. 6/3040 useless extension candidates. Maximal degree in co-relation 7268. Up to 3020 conditions per place. [2024-11-10 22:27:15,375 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 36 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-11-10 22:27:15,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 450 flow [2024-11-10 22:27:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 367 transitions. [2024-11-10 22:27:15,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44216867469879517 [2024-11-10 22:27:15,379 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 214 flow. Second operand 10 states and 367 transitions. [2024-11-10 22:27:15,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 450 flow [2024-11-10 22:27:15,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 392 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:15,385 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 354 flow [2024-11-10 22:27:15,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-10 22:27:15,386 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2024-11-10 22:27:15,387 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 354 flow [2024-11-10 22:27:15,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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) [2024-11-10 22:27:15,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:15,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:15,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:27:15,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:27:15,589 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:15,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1243604470, now seen corresponding path program 1 times [2024-11-10 22:27:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429923022] [2024-11-10 22:27:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:15,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429923022] [2024-11-10 22:27:15,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429923022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:15,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:15,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:15,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151557601] [2024-11-10 22:27:15,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:15,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:15,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-10 22:27:15,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-10 22:27:15,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:15,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-10 22:27:15,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:16,246 INFO L124 PetriNetUnfolderBase]: 2305/4333 cut-off events. [2024-11-10 22:27:16,247 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-10 22:27:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 4333 events. 2305/4333 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31959 event pairs, 2001 based on Foata normal form. 74/3334 useless extension candidates. Maximal degree in co-relation 7707. Up to 3044 conditions per place. [2024-11-10 22:27:16,281 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 86 selfloop transitions, 4 changer transitions 1/118 dead transitions. [2024-11-10 22:27:16,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 118 transitions, 673 flow [2024-11-10 22:27:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-10 22:27:16,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5397590361445783 [2024-11-10 22:27:16,283 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 354 flow. Second operand 5 states and 224 transitions. [2024-11-10 22:27:16,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 118 transitions, 673 flow [2024-11-10 22:27:16,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 639 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:16,291 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-11-10 22:27:16,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-11-10 22:27:16,293 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-11-10 22:27:16,293 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-11-10 22:27:16,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-10 22:27:16,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:16,294 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:16,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:27:16,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:16,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 670118851, now seen corresponding path program 1 times [2024-11-10 22:27:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:16,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527066805] [2024-11-10 22:27:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:16,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527066805] [2024-11-10 22:27:16,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527066805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:16,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058759183] [2024-11-10 22:27:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:16,462 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) [2024-11-10 22:27:16,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:27:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:16,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:16,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:16,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:16,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058759183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:27:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2903036] [2024-11-10 22:27:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:16,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:27:16,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-10 22:27:16,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-10 22:27:16,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:16,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-10 22:27:16,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:16,999 INFO L124 PetriNetUnfolderBase]: 1554/3042 cut-off events. [2024-11-10 22:27:16,999 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2024-11-10 22:27:17,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 3042 events. 1554/3042 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20899 event pairs, 1324 based on Foata normal form. 0/2484 useless extension candidates. Maximal degree in co-relation 5635. Up to 2178 conditions per place. [2024-11-10 22:27:17,016 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 55 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-10 22:27:17,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 458 flow [2024-11-10 22:27:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-10 22:27:17,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5502008032128514 [2024-11-10 22:27:17,018 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 3 states and 137 transitions. [2024-11-10 22:27:17,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 458 flow [2024-11-10 22:27:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 86 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:17,022 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 344 flow [2024-11-10 22:27:17,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-11-10 22:27:17,025 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-10 22:27:17,025 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 344 flow [2024-11-10 22:27:17,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-10 22:27:17,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:17,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:17,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:17,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:17,227 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:17,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1319470595, now seen corresponding path program 1 times [2024-11-10 22:27:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937948492] [2024-11-10 22:27:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937948492] [2024-11-10 22:27:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937948492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:17,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437188724] [2024-11-10 22:27:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:17,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:17,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-10 22:27:17,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-10 22:27:17,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:17,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-10 22:27:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:17,544 INFO L124 PetriNetUnfolderBase]: 1426/2792 cut-off events. [2024-11-10 22:27:17,545 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2024-11-10 22:27:17,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 2792 events. 1426/2792 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17962 event pairs, 488 based on Foata normal form. 40/2395 useless extension candidates. Maximal degree in co-relation 5400. Up to 1515 conditions per place. [2024-11-10 22:27:17,561 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 68 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-10 22:27:17,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 521 flow [2024-11-10 22:27:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-10 22:27:17,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-11-10 22:27:17,563 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 344 flow. Second operand 3 states and 150 transitions. [2024-11-10 22:27:17,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 521 flow [2024-11-10 22:27:17,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 100 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:17,566 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 349 flow [2024-11-10 22:27:17,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-11-10 22:27:17,567 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2024-11-10 22:27:17,567 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 349 flow [2024-11-10 22:27:17,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-10 22:27:17,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:17,568 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:17,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:27:17,568 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -260854041, now seen corresponding path program 1 times [2024-11-10 22:27:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:17,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625715947] [2024-11-10 22:27:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625715947] [2024-11-10 22:27:17,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625715947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:17,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:17,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186214181] [2024-11-10 22:27:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:17,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:17,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:17,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-10 22:27:17,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-10 22:27:17,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:17,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-10 22:27:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:18,251 INFO L124 PetriNetUnfolderBase]: 2855/5209 cut-off events. [2024-11-10 22:27:18,251 INFO L125 PetriNetUnfolderBase]: For 1038/1072 co-relation queries the response was YES. [2024-11-10 22:27:18,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 5209 events. 2855/5209 cut-off events. For 1038/1072 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 34711 event pairs, 1540 based on Foata normal form. 96/4688 useless extension candidates. Maximal degree in co-relation 10688. Up to 3069 conditions per place. [2024-11-10 22:27:18,277 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 94 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-10 22:27:18,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 651 flow [2024-11-10 22:27:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-10 22:27:18,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933734939759037 [2024-11-10 22:27:18,279 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 349 flow. Second operand 4 states and 197 transitions. [2024-11-10 22:27:18,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 651 flow [2024-11-10 22:27:18,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:18,282 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 376 flow [2024-11-10 22:27:18,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-11-10 22:27:18,283 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2024-11-10 22:27:18,283 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 376 flow [2024-11-10 22:27:18,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-10 22:27:18,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:18,284 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:18,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:27:18,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:18,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -336201050, now seen corresponding path program 1 times [2024-11-10 22:27:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151307458] [2024-11-10 22:27:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151307458] [2024-11-10 22:27:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151307458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377557172] [2024-11-10 22:27:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:18,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:18,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-10 22:27:18,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-10 22:27:18,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:18,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-10 22:27:18,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:18,722 INFO L124 PetriNetUnfolderBase]: 1713/3429 cut-off events. [2024-11-10 22:27:18,722 INFO L125 PetriNetUnfolderBase]: For 1288/1368 co-relation queries the response was YES. [2024-11-10 22:27:18,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 3429 events. 1713/3429 cut-off events. For 1288/1368 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22472 event pairs, 742 based on Foata normal form. 6/3077 useless extension candidates. Maximal degree in co-relation 7538. Up to 2287 conditions per place. [2024-11-10 22:27:18,747 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 65 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-10 22:27:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 537 flow [2024-11-10 22:27:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-10 22:27:18,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5783132530120482 [2024-11-10 22:27:18,749 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 376 flow. Second operand 3 states and 144 transitions. [2024-11-10 22:27:18,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 537 flow [2024-11-10 22:27:18,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 99 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:18,753 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 396 flow [2024-11-10 22:27:18,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-10 22:27:18,755 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-10 22:27:18,755 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 396 flow [2024-11-10 22:27:18,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-10 22:27:18,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:18,756 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:27:18,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:27:18,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:18,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -146583714, now seen corresponding path program 2 times [2024-11-10 22:27:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:18,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166203619] [2024-11-10 22:27:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166203619] [2024-11-10 22:27:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166203619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049590427] [2024-11-10 22:27:18,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:18,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:18,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:18,926 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) [2024-11-10 22:27:18,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:27:18,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:18,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:19,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:19,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:19,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049590427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:19,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:27:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441204968] [2024-11-10 22:27:19,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:19,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:27:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:27:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:27:19,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-10 22:27:19,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 396 flow. Second operand has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 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) [2024-11-10 22:27:19,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:19,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-10 22:27:19,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:19,911 INFO L124 PetriNetUnfolderBase]: 1716/3490 cut-off events. [2024-11-10 22:27:19,911 INFO L125 PetriNetUnfolderBase]: For 2042/2134 co-relation queries the response was YES. [2024-11-10 22:27:19,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7962 conditions, 3490 events. 1716/3490 cut-off events. For 2042/2134 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23319 event pairs, 1328 based on Foata normal form. 4/3108 useless extension candidates. Maximal degree in co-relation 7941. Up to 2419 conditions per place. [2024-11-10 22:27:19,939 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 41 selfloop transitions, 39 changer transitions 0/106 dead transitions. [2024-11-10 22:27:19,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 610 flow [2024-11-10 22:27:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:27:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:27:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 750 transitions. [2024-11-10 22:27:19,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37650602409638556 [2024-11-10 22:27:19,943 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 396 flow. Second operand 24 states and 750 transitions. [2024-11-10 22:27:19,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 610 flow [2024-11-10 22:27:19,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 106 transitions, 601 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:19,948 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 523 flow [2024-11-10 22:27:19,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=523, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-11-10 22:27:19,950 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 39 predicate places. [2024-11-10 22:27:19,950 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 523 flow [2024-11-10 22:27:19,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 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) [2024-11-10 22:27:19,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:19,951 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:19,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:27:20,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:20,152 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:20,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 966197505, now seen corresponding path program 1 times [2024-11-10 22:27:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397853505] [2024-11-10 22:27:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397853505] [2024-11-10 22:27:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397853505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:20,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620035288] [2024-11-10 22:27:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:20,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:20,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-10 22:27:20,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-10 22:27:20,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:20,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-10 22:27:20,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:20,762 INFO L124 PetriNetUnfolderBase]: 2027/4187 cut-off events. [2024-11-10 22:27:20,762 INFO L125 PetriNetUnfolderBase]: For 1848/2000 co-relation queries the response was YES. [2024-11-10 22:27:20,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 4187 events. 2027/4187 cut-off events. For 1848/2000 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 28569 event pairs, 1601 based on Foata normal form. 88/3864 useless extension candidates. Maximal degree in co-relation 9190. Up to 2458 conditions per place. [2024-11-10 22:27:20,786 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 82 selfloop transitions, 9 changer transitions 4/122 dead transitions. [2024-11-10 22:27:20,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 784 flow [2024-11-10 22:27:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2024-11-10 22:27:20,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204819277108433 [2024-11-10 22:27:20,788 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 523 flow. Second operand 5 states and 216 transitions. [2024-11-10 22:27:20,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 784 flow [2024-11-10 22:27:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 721 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-10 22:27:20,794 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 483 flow [2024-11-10 22:27:20,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2024-11-10 22:27:20,796 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 36 predicate places. [2024-11-10 22:27:20,796 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 483 flow [2024-11-10 22:27:20,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-10 22:27:20,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:20,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:20,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:27:20,797 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:20,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1395954339, now seen corresponding path program 1 times [2024-11-10 22:27:20,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:20,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371150062] [2024-11-10 22:27:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:20,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371150062] [2024-11-10 22:27:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371150062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588968181] [2024-11-10 22:27:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:20,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:20,932 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) [2024-11-10 22:27:20,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:27:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:21,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:27:21,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:21,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588968181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:21,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 22:27:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927423843] [2024-11-10 22:27:21,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:21,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:27:21,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:27:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:27:21,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-10 22:27:21,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 483 flow. Second operand has 15 states, 15 states have (on average 30.0) internal successors, (450), 15 states have internal predecessors, (450), 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) [2024-11-10 22:27:21,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:21,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-10 22:27:21,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:22,231 INFO L124 PetriNetUnfolderBase]: 3253/6788 cut-off events. [2024-11-10 22:27:22,232 INFO L125 PetriNetUnfolderBase]: For 3131/3295 co-relation queries the response was YES. [2024-11-10 22:27:22,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15077 conditions, 6788 events. 3253/6788 cut-off events. For 3131/3295 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 51749 event pairs, 2135 based on Foata normal form. 224/6338 useless extension candidates. Maximal degree in co-relation 15051. Up to 2833 conditions per place. [2024-11-10 22:27:22,270 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 116 selfloop transitions, 30 changer transitions 23/195 dead transitions. [2024-11-10 22:27:22,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 195 transitions, 1292 flow [2024-11-10 22:27:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:27:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:27:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 404 transitions. [2024-11-10 22:27:22,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4424972617743702 [2024-11-10 22:27:22,273 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 483 flow. Second operand 11 states and 404 transitions. [2024-11-10 22:27:22,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 195 transitions, 1292 flow [2024-11-10 22:27:22,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 195 transitions, 1271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:22,284 INFO L231 Difference]: Finished difference. Result has 125 places, 117 transitions, 716 flow [2024-11-10 22:27:22,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=716, PETRI_PLACES=125, PETRI_TRANSITIONS=117} [2024-11-10 22:27:22,284 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2024-11-10 22:27:22,285 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 117 transitions, 716 flow [2024-11-10 22:27:22,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.0) internal successors, (450), 15 states have internal predecessors, (450), 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) [2024-11-10 22:27:22,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:22,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:22,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:27:22,486 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 [2024-11-10 22:27:22,487 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:22,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1102451789, now seen corresponding path program 1 times [2024-11-10 22:27:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745567247] [2024-11-10 22:27:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:22,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:22,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745567247] [2024-11-10 22:27:22,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745567247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:22,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761401147] [2024-11-10 22:27:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:22,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:22,645 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) [2024-11-10 22:27:22,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:27:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:22,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:22,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:27:22,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761401147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-10 22:27:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550241009] [2024-11-10 22:27:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:22,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:27:22,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-10 22:27:22,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 117 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-10 22:27:22,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:22,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-10 22:27:22,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:23,274 INFO L124 PetriNetUnfolderBase]: 2469/5660 cut-off events. [2024-11-10 22:27:23,274 INFO L125 PetriNetUnfolderBase]: For 3735/3835 co-relation queries the response was YES. [2024-11-10 22:27:23,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12452 conditions, 5660 events. 2469/5660 cut-off events. For 3735/3835 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 45058 event pairs, 2016 based on Foata normal form. 230/5360 useless extension candidates. Maximal degree in co-relation 12420. Up to 3717 conditions per place. [2024-11-10 22:27:23,312 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 78 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-10 22:27:23,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 115 transitions, 866 flow [2024-11-10 22:27:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-10 22:27:23,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381526104417671 [2024-11-10 22:27:23,314 INFO L175 Difference]: Start difference. First operand has 125 places, 117 transitions, 716 flow. Second operand 3 states and 134 transitions. [2024-11-10 22:27:23,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 115 transitions, 866 flow [2024-11-10 22:27:23,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 115 transitions, 848 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:23,322 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 692 flow [2024-11-10 22:27:23,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-11-10 22:27:23,323 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 45 predicate places. [2024-11-10 22:27:23,323 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 692 flow [2024-11-10 22:27:23,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-10 22:27:23,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:23,324 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:23,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:27:23,527 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 [2024-11-10 22:27:23,528 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:23,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1246840426, now seen corresponding path program 2 times [2024-11-10 22:27:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653927226] [2024-11-10 22:27:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:23,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653927226] [2024-11-10 22:27:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653927226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904378068] [2024-11-10 22:27:23,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:23,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:23,604 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) [2024-11-10 22:27:23,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:27:23,690 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:27:23,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:23,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:23,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:23,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904378068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:23,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-10 22:27:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459125611] [2024-11-10 22:27:23,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:23,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:23,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:23,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:23,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:27:23,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-10 22:27:23,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 692 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-10 22:27:23,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:23,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-10 22:27:23,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:24,306 INFO L124 PetriNetUnfolderBase]: 3665/7316 cut-off events. [2024-11-10 22:27:24,307 INFO L125 PetriNetUnfolderBase]: For 3505/3549 co-relation queries the response was YES. [2024-11-10 22:27:24,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 7316 events. 3665/7316 cut-off events. For 3505/3549 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 53640 event pairs, 1294 based on Foata normal form. 88/6786 useless extension candidates. Maximal degree in co-relation 16494. Up to 2154 conditions per place. [2024-11-10 22:27:24,355 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 106 selfloop transitions, 7 changer transitions 0/144 dead transitions. [2024-11-10 22:27:24,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 1000 flow [2024-11-10 22:27:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-10 22:27:24,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481927710843374 [2024-11-10 22:27:24,357 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 692 flow. Second operand 4 states and 182 transitions. [2024-11-10 22:27:24,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 1000 flow [2024-11-10 22:27:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:24,369 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 701 flow [2024-11-10 22:27:24,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=701, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-11-10 22:27:24,369 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 46 predicate places. [2024-11-10 22:27:24,370 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 701 flow [2024-11-10 22:27:24,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-10 22:27:24,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:24,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:24,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:24,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:24,575 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:24,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 561687408, now seen corresponding path program 1 times [2024-11-10 22:27:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709480589] [2024-11-10 22:27:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709480589] [2024-11-10 22:27:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709480589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562423289] [2024-11-10 22:27:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:25,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:25,026 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) [2024-11-10 22:27:25,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:27:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:25,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:27:25,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:25,167 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 [2024-11-10 22:27:25,555 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:27:25,556 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 25 treesize of output 12 [2024-11-10 22:27:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:25,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:25,969 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 [2024-11-10 22:27:25,974 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 [2024-11-10 22:27:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562423289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:26,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:26,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-10 22:27:26,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610098995] [2024-11-10 22:27:26,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:26,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:27:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:27:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:27:26,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-10 22:27:26,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 701 flow. Second operand has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 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) [2024-11-10 22:27:26,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:26,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-10 22:27:26,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:30,837 INFO L124 PetriNetUnfolderBase]: 13433/24505 cut-off events. [2024-11-10 22:27:30,837 INFO L125 PetriNetUnfolderBase]: For 20143/20398 co-relation queries the response was YES. [2024-11-10 22:27:30,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59715 conditions, 24505 events. 13433/24505 cut-off events. For 20143/20398 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 207654 event pairs, 4321 based on Foata normal form. 0/22410 useless extension candidates. Maximal degree in co-relation 59683. Up to 3697 conditions per place. [2024-11-10 22:27:31,042 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 331 selfloop transitions, 94 changer transitions 2/448 dead transitions. [2024-11-10 22:27:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 448 transitions, 2878 flow [2024-11-10 22:27:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 22:27:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-10 22:27:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1527 transitions. [2024-11-10 22:27:31,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3832831325301205 [2024-11-10 22:27:31,050 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 701 flow. Second operand 48 states and 1527 transitions. [2024-11-10 22:27:31,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 448 transitions, 2878 flow [2024-11-10 22:27:31,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 448 transitions, 2740 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:27:31,092 INFO L231 Difference]: Finished difference. Result has 177 places, 160 transitions, 1208 flow [2024-11-10 22:27:31,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1208, PETRI_PLACES=177, PETRI_TRANSITIONS=160} [2024-11-10 22:27:31,093 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 101 predicate places. [2024-11-10 22:27:31,093 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 160 transitions, 1208 flow [2024-11-10 22:27:31,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 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) [2024-11-10 22:27:31,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:31,094 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:27:31,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:27:31,294 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,SelfDestructingSolverStorable13 [2024-11-10 22:27:31,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:31,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash 248021384, now seen corresponding path program 1 times [2024-11-10 22:27:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:31,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509021831] [2024-11-10 22:27:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509021831] [2024-11-10 22:27:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509021831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597132976] [2024-11-10 22:27:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:31,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:31,469 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) [2024-11-10 22:27:31,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:27:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:27:31,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597132976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:31,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:31,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:27:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657289742] [2024-11-10 22:27:31,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:31,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:27:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:31,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:27:31,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:27:31,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-10 22:27:31,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 160 transitions, 1208 flow. Second operand has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 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) [2024-11-10 22:27:31,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:31,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-10 22:27:31,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:33,390 INFO L124 PetriNetUnfolderBase]: 7833/17548 cut-off events. [2024-11-10 22:27:33,390 INFO L125 PetriNetUnfolderBase]: For 24354/24687 co-relation queries the response was YES. [2024-11-10 22:27:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46959 conditions, 17548 events. 7833/17548 cut-off events. For 24354/24687 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 169272 event pairs, 6314 based on Foata normal form. 21/16214 useless extension candidates. Maximal degree in co-relation 46915. Up to 11339 conditions per place. [2024-11-10 22:27:33,537 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 76 selfloop transitions, 108 changer transitions 0/223 dead transitions. [2024-11-10 22:27:33,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 223 transitions, 2374 flow [2024-11-10 22:27:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:27:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:27:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 890 transitions. [2024-11-10 22:27:33,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41241890639481 [2024-11-10 22:27:33,540 INFO L175 Difference]: Start difference. First operand has 177 places, 160 transitions, 1208 flow. Second operand 26 states and 890 transitions. [2024-11-10 22:27:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 223 transitions, 2374 flow [2024-11-10 22:27:33,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 223 transitions, 2211 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-11-10 22:27:33,736 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2131 flow [2024-11-10 22:27:33,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2131, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-11-10 22:27:33,737 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2024-11-10 22:27:33,737 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2131 flow [2024-11-10 22:27:33,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 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) [2024-11-10 22:27:33,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:33,738 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:33,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:33,938 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,SelfDestructingSolverStorable14 [2024-11-10 22:27:33,939 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:33,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2653168, now seen corresponding path program 1 times [2024-11-10 22:27:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207102997] [2024-11-10 22:27:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207102997] [2024-11-10 22:27:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207102997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682580854] [2024-11-10 22:27:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:34,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:34,025 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) [2024-11-10 22:27:34,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:27:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:34,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:34,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:34,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682580854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:27:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006472033] [2024-11-10 22:27:34,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:34,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:34,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-10 22:27:34,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2131 flow. Second operand has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2024-11-10 22:27:34,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:34,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-10 22:27:34,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:38,099 INFO L124 PetriNetUnfolderBase]: 15314/32021 cut-off events. [2024-11-10 22:27:38,099 INFO L125 PetriNetUnfolderBase]: For 37891/38384 co-relation queries the response was YES. [2024-11-10 22:27:38,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82544 conditions, 32021 events. 15314/32021 cut-off events. For 37891/38384 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 307458 event pairs, 4376 based on Foata normal form. 0/29524 useless extension candidates. Maximal degree in co-relation 82493. Up to 10218 conditions per place. [2024-11-10 22:27:38,312 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 437 selfloop transitions, 13 changer transitions 0/487 dead transitions. [2024-11-10 22:27:38,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 487 transitions, 4364 flow [2024-11-10 22:27:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2024-11-10 22:27:38,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698795180722892 [2024-11-10 22:27:38,314 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2131 flow. Second operand 10 states and 473 transitions. [2024-11-10 22:27:38,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 487 transitions, 4364 flow [2024-11-10 22:27:38,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 487 transitions, 4034 flow, removed 108 selfloop flow, removed 13 redundant places. [2024-11-10 22:27:38,511 INFO L231 Difference]: Finished difference. Result has 194 places, 232 transitions, 1881 flow [2024-11-10 22:27:38,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1881, PETRI_PLACES=194, PETRI_TRANSITIONS=232} [2024-11-10 22:27:38,512 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 118 predicate places. [2024-11-10 22:27:38,512 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 232 transitions, 1881 flow [2024-11-10 22:27:38,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2024-11-10 22:27:38,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:38,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:38,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:27:38,717 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,SelfDestructingSolverStorable15 [2024-11-10 22:27:38,718 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:38,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash -662846916, now seen corresponding path program 1 times [2024-11-10 22:27:38,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70825825] [2024-11-10 22:27:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:39,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70825825] [2024-11-10 22:27:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70825825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503585094] [2024-11-10 22:27:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:39,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:39,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:39,091 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) [2024-11-10 22:27:39,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:27:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:39,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 22:27:39,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:39,279 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 [2024-11-10 22:27:39,524 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:27:39,524 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 [2024-11-10 22:27:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:39,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:39,870 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 18 treesize of output 16 [2024-11-10 22:27:39,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-10 22:27:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503585094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:39,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-10 22:27:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938928390] [2024-11-10 22:27:39,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:39,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:27:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:27:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:27:40,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-10 22:27:40,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 232 transitions, 1881 flow. Second operand has 24 states, 24 states have (on average 27.083333333333332) internal successors, (650), 24 states have internal predecessors, (650), 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) [2024-11-10 22:27:40,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:40,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-10 22:27:40,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:46,763 INFO L124 PetriNetUnfolderBase]: 19464/37043 cut-off events. [2024-11-10 22:27:46,764 INFO L125 PetriNetUnfolderBase]: For 67289/67715 co-relation queries the response was YES. [2024-11-10 22:27:47,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107898 conditions, 37043 events. 19464/37043 cut-off events. For 67289/67715 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 334507 event pairs, 8691 based on Foata normal form. 602/35883 useless extension candidates. Maximal degree in co-relation 107847. Up to 6801 conditions per place. [2024-11-10 22:27:47,144 INFO L140 encePairwiseOnDemand]: 66/83 looper letters, 408 selfloop transitions, 153 changer transitions 0/589 dead transitions. [2024-11-10 22:27:47,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 589 transitions, 4674 flow [2024-11-10 22:27:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-10 22:27:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-10 22:27:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1598 transitions. [2024-11-10 22:27:47,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3929186132284239 [2024-11-10 22:27:47,148 INFO L175 Difference]: Start difference. First operand has 194 places, 232 transitions, 1881 flow. Second operand 49 states and 1598 transitions. [2024-11-10 22:27:47,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 589 transitions, 4674 flow [2024-11-10 22:27:47,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 589 transitions, 4420 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-11-10 22:27:47,693 INFO L231 Difference]: Finished difference. Result has 251 places, 251 transitions, 2360 flow [2024-11-10 22:27:47,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2360, PETRI_PLACES=251, PETRI_TRANSITIONS=251} [2024-11-10 22:27:47,694 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 175 predicate places. [2024-11-10 22:27:47,694 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 251 transitions, 2360 flow [2024-11-10 22:27:47,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 27.083333333333332) internal successors, (650), 24 states have internal predecessors, (650), 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) [2024-11-10 22:27:47,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:47,695 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:47,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:27:47,895 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,SelfDestructingSolverStorable16 [2024-11-10 22:27:47,896 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:47,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2065622628, now seen corresponding path program 1 times [2024-11-10 22:27:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:47,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785795740] [2024-11-10 22:27:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785795740] [2024-11-10 22:27:49,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785795740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212018832] [2024-11-10 22:27:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:49,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:49,329 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) [2024-11-10 22:27:49,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:27:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 22:27:49,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:49,494 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 [2024-11-10 22:27:49,950 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:27:49,951 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 25 treesize of output 12 [2024-11-10 22:27:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:49,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:50,365 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 [2024-11-10 22:27:50,368 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 [2024-11-10 22:27:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212018832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:50,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:50,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 32 [2024-11-10 22:27:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614265700] [2024-11-10 22:27:50,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:50,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:27:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:27:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:27:50,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-10 22:27:50,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 251 transitions, 2360 flow. Second operand has 34 states, 34 states have (on average 25.941176470588236) internal successors, (882), 34 states have internal predecessors, (882), 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) [2024-11-10 22:27:50,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:50,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-10 22:27:50,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:00,979 INFO L124 PetriNetUnfolderBase]: 27883/51581 cut-off events. [2024-11-10 22:28:00,979 INFO L125 PetriNetUnfolderBase]: For 120971/122953 co-relation queries the response was YES. [2024-11-10 22:28:01,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155176 conditions, 51581 events. 27883/51581 cut-off events. For 120971/122953 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 488895 event pairs, 3390 based on Foata normal form. 100/48424 useless extension candidates. Maximal degree in co-relation 155112. Up to 15372 conditions per place. [2024-11-10 22:28:01,623 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 575 selfloop transitions, 166 changer transitions 4/774 dead transitions. [2024-11-10 22:28:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 774 transitions, 6720 flow [2024-11-10 22:28:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-10 22:28:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-10 22:28:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1450 transitions. [2024-11-10 22:28:01,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38821954484605087 [2024-11-10 22:28:01,627 INFO L175 Difference]: Start difference. First operand has 251 places, 251 transitions, 2360 flow. Second operand 45 states and 1450 transitions. [2024-11-10 22:28:01,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 774 transitions, 6720 flow [2024-11-10 22:28:02,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 774 transitions, 6436 flow, removed 33 selfloop flow, removed 29 redundant places. [2024-11-10 22:28:03,002 INFO L231 Difference]: Finished difference. Result has 277 places, 310 transitions, 2994 flow [2024-11-10 22:28:03,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2994, PETRI_PLACES=277, PETRI_TRANSITIONS=310} [2024-11-10 22:28:03,003 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-11-10 22:28:03,004 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 310 transitions, 2994 flow [2024-11-10 22:28:03,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 25.941176470588236) internal successors, (882), 34 states have internal predecessors, (882), 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) [2024-11-10 22:28:03,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:03,005 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:03,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:28:03,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:28:03,205 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1845298442, now seen corresponding path program 2 times [2024-11-10 22:28:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867098765] [2024-11-10 22:28:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:04,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:04,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867098765] [2024-11-10 22:28:04,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867098765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:04,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173028632] [2024-11-10 22:28:04,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:04,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:04,600 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) [2024-11-10 22:28:04,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:28:04,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:04,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:04,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 22:28:04,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:05,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:05,024 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 34 treesize of output 30 [2024-11-10 22:28:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:05,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173028632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:05,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:05,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 20 [2024-11-10 22:28:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751128630] [2024-11-10 22:28:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:05,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:28:05,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:05,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:28:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:05,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-10 22:28:05,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 310 transitions, 2994 flow. Second operand has 8 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2024-11-10 22:28:05,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:05,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-10 22:28:05,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:15,326 INFO L124 PetriNetUnfolderBase]: 32861/66396 cut-off events. [2024-11-10 22:28:15,326 INFO L125 PetriNetUnfolderBase]: For 210943/213583 co-relation queries the response was YES. [2024-11-10 22:28:16,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214815 conditions, 66396 events. 32861/66396 cut-off events. For 210943/213583 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 696403 event pairs, 4120 based on Foata normal form. 1656/67333 useless extension candidates. Maximal degree in co-relation 214739. Up to 23769 conditions per place. [2024-11-10 22:28:16,377 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 420 selfloop transitions, 63 changer transitions 0/526 dead transitions. [2024-11-10 22:28:16,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 526 transitions, 5324 flow [2024-11-10 22:28:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:28:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:28:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-11-10 22:28:16,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466867469879518 [2024-11-10 22:28:16,379 INFO L175 Difference]: Start difference. First operand has 277 places, 310 transitions, 2994 flow. Second operand 8 states and 363 transitions. [2024-11-10 22:28:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 526 transitions, 5324 flow [2024-11-10 22:28:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 526 transitions, 5110 flow, removed 50 selfloop flow, removed 12 redundant places. [2024-11-10 22:28:20,197 INFO L231 Difference]: Finished difference. Result has 277 places, 334 transitions, 3264 flow [2024-11-10 22:28:20,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=277, PETRI_TRANSITIONS=334} [2024-11-10 22:28:20,198 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-11-10 22:28:20,198 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 334 transitions, 3264 flow [2024-11-10 22:28:20,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2024-11-10 22:28:20,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:20,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:20,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:20,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:20,399 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:20,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash -532225186, now seen corresponding path program 1 times [2024-11-10 22:28:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:20,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054709765] [2024-11-10 22:28:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:20,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054709765] [2024-11-10 22:28:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054709765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196892889] [2024-11-10 22:28:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:20,898 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) [2024-11-10 22:28:20,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:28:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:21,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 22:28:21,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:21,061 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 [2024-11-10 22:28:21,467 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:28:21,468 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 25 treesize of output 12 [2024-11-10 22:28:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:21,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:21,817 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 [2024-11-10 22:28:21,821 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 [2024-11-10 22:28:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196892889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:21,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2024-11-10 22:28:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250245097] [2024-11-10 22:28:21,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:21,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 22:28:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 22:28:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-10 22:28:22,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-10 22:28:22,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 334 transitions, 3264 flow. Second operand has 29 states, 29 states have (on average 26.275862068965516) internal successors, (762), 29 states have internal predecessors, (762), 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) [2024-11-10 22:28:22,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:22,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-10 22:28:22,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand