./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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-2-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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:56:30,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:56:30,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:56:30,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:56:30,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:56:30,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:56:30,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:56:30,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:56:30,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:56:30,458 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:56:30,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:56:30,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:56:30,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:56:30,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:56:30,460 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:56:30,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:56:30,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:56:30,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:56:30,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:56:30,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:56:30,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:56:30,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:56:30,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:56:30,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:56:30,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:56:30,467 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:56:30,467 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:56:30,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:56:30,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:56:30,468 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:56:30,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:56:30,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:56:30,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:56:30,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:56:30,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:30,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:56:30,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:56:30,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:56:30,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:56:30,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:56:30,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:56:30,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:56:30,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:56:30,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:56:30,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-17 07:56:30,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:56:30,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:56:30,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:56:30,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:56:30,724 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:56:30,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-17 07:56:32,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:56:32,312 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:56:32,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-17 07:56:32,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85daafd0/46ce6e78d8ba4581a95f439591efe45b/FLAGcc4007d70 [2024-11-17 07:56:32,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85daafd0/46ce6e78d8ba4581a95f439591efe45b [2024-11-17 07:56:32,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:56:32,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:56:32,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:32,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:56:32,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:56:32,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f1db3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32, skipping insertion in model container [2024-11-17 07:56:32,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:56:32,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:32,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:56:32,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:32,754 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:56:32,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32 WrapperNode [2024-11-17 07:56:32,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:32,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:32,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:56:32,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:56:32,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,794 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-11-17 07:56:32,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:32,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:56:32,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:56:32,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:56:32,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,825 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 07:56:32,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,831 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:56:32,838 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:56:32,838 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:56:32,838 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:56:32,839 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (1/1) ... [2024-11-17 07:56:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:32,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:32,874 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) [2024-11-17 07:56:32,881 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 [2024-11-17 07:56:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:56:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:56:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:56:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:56:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:56:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:56:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:56:32,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:56:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:56:32,932 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:56:33,058 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:56:33,065 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:56:33,421 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:56:33,422 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:56:33,685 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:56:33,685 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:56:33,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:33 BoogieIcfgContainer [2024-11-17 07:56:33,685 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:56:33,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:56:33,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:56:33,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:56:33,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:56:32" (1/3) ... [2024-11-17 07:56:33,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9227c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:33, skipping insertion in model container [2024-11-17 07:56:33,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:32" (2/3) ... [2024-11-17 07:56:33,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9227c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:33, skipping insertion in model container [2024-11-17 07:56:33,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:33" (3/3) ... [2024-11-17 07:56:33,697 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-17 07:56:33,714 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:56:33,714 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-17 07:56:33,715 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:56:33,781 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:56:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 52 transitions, 118 flow [2024-11-17 07:56:33,848 INFO L124 PetriNetUnfolderBase]: 7/50 cut-off events. [2024-11-17 07:56:33,848 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:56:33,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 50 events. 7/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 130 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2024-11-17 07:56:33,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 52 transitions, 118 flow [2024-11-17 07:56:33,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 48 transitions, 105 flow [2024-11-17 07:56:33,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:56:33,877 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;@43efae96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:56:33,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-17 07:56:33,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:56:33,881 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:56:33,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:56:33,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:33,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:56:33,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:33,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash 14477850, now seen corresponding path program 1 times [2024-11-17 07:56:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126092710] [2024-11-17 07:56:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:34,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126092710] [2024-11-17 07:56:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126092710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:34,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174899354] [2024-11-17 07:56:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:34,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:34,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:34,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 07:56:34,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:34,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:34,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:34,411 INFO L124 PetriNetUnfolderBase]: 163/406 cut-off events. [2024-11-17 07:56:34,412 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 07:56:34,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 406 events. 163/406 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2314 event pairs, 136 based on Foata normal form. 50/353 useless extension candidates. Maximal degree in co-relation 658. Up to 270 conditions per place. [2024-11-17 07:56:34,417 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 19 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-17 07:56:34,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 135 flow [2024-11-17 07:56:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-17 07:56:34,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2024-11-17 07:56:34,433 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 105 flow. Second operand 4 states and 107 transitions. [2024-11-17 07:56:34,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 135 flow [2024-11-17 07:56:34,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:34,437 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 92 flow [2024-11-17 07:56:34,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-17 07:56:34,442 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-17 07:56:34,443 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 92 flow [2024-11-17 07:56:34,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 07:56:34,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:34,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 07:56:34,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:56:34,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:34,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 448813774, now seen corresponding path program 1 times [2024-11-17 07:56:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238310151] [2024-11-17 07:56:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:34,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:34,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238310151] [2024-11-17 07:56:34,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238310151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:34,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650315925] [2024-11-17 07:56:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:34,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:34,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:34,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 07:56:34,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:34,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:34,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:34,699 INFO L124 PetriNetUnfolderBase]: 164/412 cut-off events. [2024-11-17 07:56:34,699 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:56:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 412 events. 164/412 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2354 event pairs, 136 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 683. Up to 275 conditions per place. [2024-11-17 07:56:34,706 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 22 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-17 07:56:34,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 156 flow [2024-11-17 07:56:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-17 07:56:34,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-11-17 07:56:34,709 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 4 states and 103 transitions. [2024-11-17 07:56:34,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 156 flow [2024-11-17 07:56:34,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:34,713 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 111 flow [2024-11-17 07:56:34,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-11-17 07:56:34,714 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-17 07:56:34,714 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 111 flow [2024-11-17 07:56:34,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 07:56:34,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:34,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:56:34,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:56:34,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:34,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1153730618, now seen corresponding path program 1 times [2024-11-17 07:56:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:34,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558597410] [2024-11-17 07:56:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558597410] [2024-11-17 07:56:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558597410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415314966] [2024-11-17 07:56:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:34,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:34,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:34,877 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) [2024-11-17 07:56:34,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:56:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:34,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:34,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:34,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:35,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415314966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:35,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:35,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-17 07:56:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449272112] [2024-11-17 07:56:35,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:35,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:56:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:56:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:56:35,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:35,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:35,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:35,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:35,330 INFO L124 PetriNetUnfolderBase]: 167/430 cut-off events. [2024-11-17 07:56:35,330 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-17 07:56:35,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 430 events. 167/430 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2503 event pairs, 136 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 692. Up to 278 conditions per place. [2024-11-17 07:56:35,336 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 22 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-11-17 07:56:35,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 217 flow [2024-11-17 07:56:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-11-17 07:56:35,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-11-17 07:56:35,339 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 111 flow. Second operand 10 states and 228 transitions. [2024-11-17 07:56:35,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 217 flow [2024-11-17 07:56:35,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:35,342 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-11-17 07:56:35,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-17 07:56:35,343 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2024-11-17 07:56:35,344 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-11-17 07:56:35,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:35,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:35,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:35,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:35,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:35,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:35,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1921835309, now seen corresponding path program 1 times [2024-11-17 07:56:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:35,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702212315] [2024-11-17 07:56:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702212315] [2024-11-17 07:56:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702212315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754234244] [2024-11-17 07:56:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:35,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:35,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-11-17 07:56:35,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:35,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:35,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-11-17 07:56:35,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:35,817 INFO L124 PetriNetUnfolderBase]: 173/461 cut-off events. [2024-11-17 07:56:35,817 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-17 07:56:35,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 461 events. 173/461 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2596 event pairs, 143 based on Foata normal form. 10/371 useless extension candidates. Maximal degree in co-relation 800. Up to 286 conditions per place. [2024-11-17 07:56:35,821 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 32 selfloop transitions, 2 changer transitions 8/59 dead transitions. [2024-11-17 07:56:35,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 289 flow [2024-11-17 07:56:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-11-17 07:56:35,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346153846153846 [2024-11-17 07:56:35,825 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 5 states and 139 transitions. [2024-11-17 07:56:35,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 289 flow [2024-11-17 07:56:35,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 259 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:35,830 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 174 flow [2024-11-17 07:56:35,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-17 07:56:35,831 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2024-11-17 07:56:35,832 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 174 flow [2024-11-17 07:56:35,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:35,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:35,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:35,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:56:35,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:35,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash 279379915, now seen corresponding path program 1 times [2024-11-17 07:56:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:35,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729925369] [2024-11-17 07:56:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:35,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729925369] [2024-11-17 07:56:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729925369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743092543] [2024-11-17 07:56:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:35,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:35,970 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) [2024-11-17 07:56:35,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:56:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:36,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:36,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:36,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743092543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:36,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 07:56:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698818173] [2024-11-17 07:56:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:36,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:56:36,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-17 07:56:36,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:36,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:36,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-17 07:56:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:36,120 INFO L124 PetriNetUnfolderBase]: 107/298 cut-off events. [2024-11-17 07:56:36,120 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-17 07:56:36,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 298 events. 107/298 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1454 event pairs, 83 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 551. Up to 187 conditions per place. [2024-11-17 07:56:36,127 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 29 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-11-17 07:56:36,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 222 flow [2024-11-17 07:56:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-17 07:56:36,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2024-11-17 07:56:36,130 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 174 flow. Second operand 3 states and 85 transitions. [2024-11-17 07:56:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 222 flow [2024-11-17 07:56:36,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:36,132 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 160 flow [2024-11-17 07:56:36,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-17 07:56:36,133 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-11-17 07:56:36,133 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 160 flow [2024-11-17 07:56:36,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:36,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:36,134 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:36,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:36,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:36,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:36,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2098825329, now seen corresponding path program 1 times [2024-11-17 07:56:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:36,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55537073] [2024-11-17 07:56:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:36,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55537073] [2024-11-17 07:56:36,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55537073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:36,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:36,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:36,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931087950] [2024-11-17 07:56:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:36,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:36,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:36,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-17 07:56:36,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:36,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:36,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:36,562 INFO L124 PetriNetUnfolderBase]: 209/495 cut-off events. [2024-11-17 07:56:36,563 INFO L125 PetriNetUnfolderBase]: For 84/88 co-relation queries the response was YES. [2024-11-17 07:56:36,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 495 events. 209/495 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2437 event pairs, 128 based on Foata normal form. 12/454 useless extension candidates. Maximal degree in co-relation 968. Up to 281 conditions per place. [2024-11-17 07:56:36,566 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 47 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-17 07:56:36,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 308 flow [2024-11-17 07:56:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-17 07:56:36,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 07:56:36,568 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 160 flow. Second operand 4 states and 114 transitions. [2024-11-17 07:56:36,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 308 flow [2024-11-17 07:56:36,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:36,571 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 188 flow [2024-11-17 07:56:36,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-17 07:56:36,572 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-11-17 07:56:36,572 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 188 flow [2024-11-17 07:56:36,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-17 07:56:36,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:36,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:36,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:56:36,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:36,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1438463775, now seen corresponding path program 1 times [2024-11-17 07:56:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:36,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805473935] [2024-11-17 07:56:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:36,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:36,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805473935] [2024-11-17 07:56:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805473935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:36,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879812906] [2024-11-17 07:56:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:36,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:36,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-17 07:56:36,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:36,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:36,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-17 07:56:36,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:36,710 INFO L124 PetriNetUnfolderBase]: 137/396 cut-off events. [2024-11-17 07:56:36,710 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-17 07:56:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 396 events. 137/396 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1941 event pairs, 40 based on Foata normal form. 4/363 useless extension candidates. Maximal degree in co-relation 854. Up to 211 conditions per place. [2024-11-17 07:56:36,714 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 35 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-11-17 07:56:36,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 282 flow [2024-11-17 07:56:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-17 07:56:36,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-11-17 07:56:36,715 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 188 flow. Second operand 3 states and 89 transitions. [2024-11-17 07:56:36,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 282 flow [2024-11-17 07:56:36,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:36,719 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 208 flow [2024-11-17 07:56:36,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-17 07:56:36,719 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-11-17 07:56:36,720 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 208 flow [2024-11-17 07:56:36,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:36,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:36,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:36,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:56:36,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:36,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1710363592, now seen corresponding path program 1 times [2024-11-17 07:56:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247439774] [2024-11-17 07:56:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247439774] [2024-11-17 07:56:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247439774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441565236] [2024-11-17 07:56:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:37,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:37,273 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) [2024-11-17 07:56:37,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:56:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:37,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:56:37,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:37,434 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 [2024-11-17 07:56:37,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 07:56:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:37,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:38,509 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 [2024-11-17 07:56:38,515 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 [2024-11-17 07:56:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441565236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:38,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-17 07:56:38,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639103858] [2024-11-17 07:56:38,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:38,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 07:56:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 07:56:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-17 07:56:38,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 07:56:38,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 208 flow. Second operand has 26 states, 26 states have (on average 15.5) internal successors, (403), 26 states have internal predecessors, (403), 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) [2024-11-17 07:56:38,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:38,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 07:56:38,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:42,510 INFO L124 PetriNetUnfolderBase]: 1358/3096 cut-off events. [2024-11-17 07:56:42,510 INFO L125 PetriNetUnfolderBase]: For 1888/2036 co-relation queries the response was YES. [2024-11-17 07:56:42,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 3096 events. 1358/3096 cut-off events. For 1888/2036 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22012 event pairs, 77 based on Foata normal form. 0/2891 useless extension candidates. Maximal degree in co-relation 7237. Up to 507 conditions per place. [2024-11-17 07:56:42,531 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 234 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-11-17 07:56:42,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 1837 flow [2024-11-17 07:56:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-17 07:56:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-17 07:56:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 761 transitions. [2024-11-17 07:56:42,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4304298642533937 [2024-11-17 07:56:42,536 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 208 flow. Second operand 34 states and 761 transitions. [2024-11-17 07:56:42,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 1837 flow [2024-11-17 07:56:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 322 transitions, 1686 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:42,547 INFO L231 Difference]: Finished difference. Result has 112 places, 125 transitions, 791 flow [2024-11-17 07:56:42,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=791, PETRI_PLACES=112, PETRI_TRANSITIONS=125} [2024-11-17 07:56:42,550 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2024-11-17 07:56:42,552 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 125 transitions, 791 flow [2024-11-17 07:56:42,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.5) internal successors, (403), 26 states have internal predecessors, (403), 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) [2024-11-17 07:56:42,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:42,553 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:56:42,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:42,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:42,757 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:42,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1979279022, now seen corresponding path program 2 times [2024-11-17 07:56:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:42,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817873432] [2024-11-17 07:56:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:42,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817873432] [2024-11-17 07:56:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817873432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850428790] [2024-11-17 07:56:42,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:42,887 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) [2024-11-17 07:56:42,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:56:42,947 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:42,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:42,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:42,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:43,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850428790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:43,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:43,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:56:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895279035] [2024-11-17 07:56:43,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:43,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:56:43,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:56:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:56:43,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:43,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 125 transitions, 791 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 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) [2024-11-17 07:56:43,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:43,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:43,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:43,495 INFO L124 PetriNetUnfolderBase]: 875/2400 cut-off events. [2024-11-17 07:56:43,496 INFO L125 PetriNetUnfolderBase]: For 8105/8230 co-relation queries the response was YES. [2024-11-17 07:56:43,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 2400 events. 875/2400 cut-off events. For 8105/8230 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 18574 event pairs, 553 based on Foata normal form. 4/2232 useless extension candidates. Maximal degree in co-relation 7073. Up to 1478 conditions per place. [2024-11-17 07:56:43,517 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 91 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-11-17 07:56:43,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 1031 flow [2024-11-17 07:56:43,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 07:56:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 07:56:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 292 transitions. [2024-11-17 07:56:43,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4010989010989011 [2024-11-17 07:56:43,520 INFO L175 Difference]: Start difference. First operand has 112 places, 125 transitions, 791 flow. Second operand 14 states and 292 transitions. [2024-11-17 07:56:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 1031 flow [2024-11-17 07:56:43,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 129 transitions, 946 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-11-17 07:56:43,557 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 756 flow [2024-11-17 07:56:43,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2024-11-17 07:56:43,558 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 67 predicate places. [2024-11-17 07:56:43,559 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 756 flow [2024-11-17 07:56:43,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 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) [2024-11-17 07:56:43,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:43,560 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] [2024-11-17 07:56:43,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:56:43,760 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 [2024-11-17 07:56:43,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:43,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 990651598, now seen corresponding path program 1 times [2024-11-17 07:56:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822269411] [2024-11-17 07:56:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822269411] [2024-11-17 07:56:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822269411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129277250] [2024-11-17 07:56:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:44,122 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) [2024-11-17 07:56:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:56:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:44,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:56:44,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:44,242 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 [2024-11-17 07:56:44,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 07:56:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:44,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:45,111 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 [2024-11-17 07:56:45,118 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 [2024-11-17 07:56:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129277250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:45,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-17 07:56:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581355677] [2024-11-17 07:56:45,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:45,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 07:56:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 07:56:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-17 07:56:45,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-17 07:56:45,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 756 flow. Second operand has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 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) [2024-11-17 07:56:45,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:45,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-17 07:56:45,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:48,681 INFO L124 PetriNetUnfolderBase]: 2120/5044 cut-off events. [2024-11-17 07:56:48,681 INFO L125 PetriNetUnfolderBase]: For 16793/17008 co-relation queries the response was YES. [2024-11-17 07:56:48,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 5044 events. 2120/5044 cut-off events. For 16793/17008 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 40268 event pairs, 194 based on Foata normal form. 147/4977 useless extension candidates. Maximal degree in co-relation 14760. Up to 659 conditions per place. [2024-11-17 07:56:48,718 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 220 selfloop transitions, 136 changer transitions 6/379 dead transitions. [2024-11-17 07:56:48,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 379 transitions, 2864 flow [2024-11-17 07:56:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-17 07:56:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-17 07:56:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 731 transitions. [2024-11-17 07:56:48,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42599067599067597 [2024-11-17 07:56:48,721 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 756 flow. Second operand 33 states and 731 transitions. [2024-11-17 07:56:48,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 379 transitions, 2864 flow [2024-11-17 07:56:48,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 379 transitions, 2822 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-17 07:56:48,772 INFO L231 Difference]: Finished difference. Result has 149 places, 202 transitions, 1776 flow [2024-11-17 07:56:48,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1776, PETRI_PLACES=149, PETRI_TRANSITIONS=202} [2024-11-17 07:56:48,773 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 101 predicate places. [2024-11-17 07:56:48,773 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 202 transitions, 1776 flow [2024-11-17 07:56:48,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 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) [2024-11-17 07:56:48,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:48,774 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:48,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:56:48,978 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,SelfDestructingSolverStorable9 [2024-11-17 07:56:48,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:48,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash -531547163, now seen corresponding path program 1 times [2024-11-17 07:56:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:48,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500009078] [2024-11-17 07:56:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500009078] [2024-11-17 07:56:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500009078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430317131] [2024-11-17 07:56:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:49,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:49,113 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) [2024-11-17 07:56:49,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:56:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:49,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:56:49,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:49,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430317131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:49,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-17 07:56:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599929781] [2024-11-17 07:56:49,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:49,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:56:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:56:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:56:49,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:49,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 202 transitions, 1776 flow. Second operand has 15 states, 15 states have (on average 19.866666666666667) internal successors, (298), 15 states have internal predecessors, (298), 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) [2024-11-17 07:56:49,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:49,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:49,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:49,607 INFO L124 PetriNetUnfolderBase]: 486/1385 cut-off events. [2024-11-17 07:56:49,607 INFO L125 PetriNetUnfolderBase]: For 9728/9776 co-relation queries the response was YES. [2024-11-17 07:56:49,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4843 conditions, 1385 events. 486/1385 cut-off events. For 9728/9776 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10133 event pairs, 269 based on Foata normal form. 68/1347 useless extension candidates. Maximal degree in co-relation 4798. Up to 533 conditions per place. [2024-11-17 07:56:49,618 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 69 selfloop transitions, 18 changer transitions 1/109 dead transitions. [2024-11-17 07:56:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 109 transitions, 913 flow [2024-11-17 07:56:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:56:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:56:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-11-17 07:56:49,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4465811965811966 [2024-11-17 07:56:49,621 INFO L175 Difference]: Start difference. First operand has 149 places, 202 transitions, 1776 flow. Second operand 9 states and 209 transitions. [2024-11-17 07:56:49,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 109 transitions, 913 flow [2024-11-17 07:56:49,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 804 flow, removed 32 selfloop flow, removed 29 redundant places. [2024-11-17 07:56:49,646 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 630 flow [2024-11-17 07:56:49,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=630, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2024-11-17 07:56:49,647 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2024-11-17 07:56:49,647 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 630 flow [2024-11-17 07:56:49,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.866666666666667) internal successors, (298), 15 states have internal predecessors, (298), 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) [2024-11-17 07:56:49,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:49,648 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:49,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:56:49,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:49,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:49,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -658982846, now seen corresponding path program 2 times [2024-11-17 07:56:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932949223] [2024-11-17 07:56:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:50,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932949223] [2024-11-17 07:56:50,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932949223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538145707] [2024-11-17 07:56:50,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:50,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:50,667 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) [2024-11-17 07:56:50,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:56:50,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:50,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:50,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:50,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:50,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538145707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:50,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:50,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 14 [2024-11-17 07:56:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559775333] [2024-11-17 07:56:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:50,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:56:50,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:50,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:50,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:51,003 INFO L124 PetriNetUnfolderBase]: 652/1706 cut-off events. [2024-11-17 07:56:51,003 INFO L125 PetriNetUnfolderBase]: For 5752/5830 co-relation queries the response was YES. [2024-11-17 07:56:51,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 1706 events. 652/1706 cut-off events. For 5752/5830 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12383 event pairs, 69 based on Foata normal form. 59/1716 useless extension candidates. Maximal degree in co-relation 5341. Up to 593 conditions per place. [2024-11-17 07:56:51,014 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 97 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-11-17 07:56:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 140 transitions, 1133 flow [2024-11-17 07:56:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-17 07:56:51,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 07:56:51,016 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 630 flow. Second operand 6 states and 171 transitions. [2024-11-17 07:56:51,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 140 transitions, 1133 flow [2024-11-17 07:56:51,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 140 transitions, 1038 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-11-17 07:56:51,036 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 702 flow [2024-11-17 07:56:51,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=702, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2024-11-17 07:56:51,037 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 62 predicate places. [2024-11-17 07:56:51,037 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 702 flow [2024-11-17 07:56:51,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:51,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:51,037 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:51,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:56:51,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:51,238 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:51,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1408475094, now seen corresponding path program 2 times [2024-11-17 07:56:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387697386] [2024-11-17 07:56:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:51,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387697386] [2024-11-17 07:56:51,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387697386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:51,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82530994] [2024-11-17 07:56:51,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:51,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:51,872 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) [2024-11-17 07:56:51,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:56:51,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:51,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:51,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:56:51,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:52,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82530994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:52,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:52,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 14 [2024-11-17 07:56:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914052078] [2024-11-17 07:56:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:52,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:56:52,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:52,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 702 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:52,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:52,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:52,272 INFO L124 PetriNetUnfolderBase]: 685/1760 cut-off events. [2024-11-17 07:56:52,272 INFO L125 PetriNetUnfolderBase]: For 5490/5572 co-relation queries the response was YES. [2024-11-17 07:56:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1760 events. 685/1760 cut-off events. For 5490/5572 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12758 event pairs, 95 based on Foata normal form. 30/1722 useless extension candidates. Maximal degree in co-relation 5701. Up to 623 conditions per place. [2024-11-17 07:56:52,281 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 86 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-11-17 07:56:52,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 130 transitions, 1051 flow [2024-11-17 07:56:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-11-17 07:56:52,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-11-17 07:56:52,282 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 702 flow. Second operand 5 states and 142 transitions. [2024-11-17 07:56:52,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 130 transitions, 1051 flow [2024-11-17 07:56:52,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 130 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:52,296 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 769 flow [2024-11-17 07:56:52,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=769, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2024-11-17 07:56:52,297 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2024-11-17 07:56:52,297 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 769 flow [2024-11-17 07:56:52,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:52,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:52,298 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:52,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:56:52,498 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,SelfDestructingSolverStorable12 [2024-11-17 07:56:52,499 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:52,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2126109815, now seen corresponding path program 1 times [2024-11-17 07:56:52,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:52,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911118363] [2024-11-17 07:56:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911118363] [2024-11-17 07:56:53,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911118363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327548420] [2024-11-17 07:56:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:53,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:53,023 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) [2024-11-17 07:56:53,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:56:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 07:56:53,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:53,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:53,310 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:56:53,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-17 07:56:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327548420] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:53,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 07:56:53,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 6] total 19 [2024-11-17 07:56:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767892031] [2024-11-17 07:56:53,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:53,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:56:53,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-11-17 07:56:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:53,609 INFO L124 PetriNetUnfolderBase]: 840/1985 cut-off events. [2024-11-17 07:56:53,609 INFO L125 PetriNetUnfolderBase]: For 6354/6455 co-relation queries the response was YES. [2024-11-17 07:56:53,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6714 conditions, 1985 events. 840/1985 cut-off events. For 6354/6455 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13962 event pairs, 21 based on Foata normal form. 18/1964 useless extension candidates. Maximal degree in co-relation 6683. Up to 551 conditions per place. [2024-11-17 07:56:53,618 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 81 selfloop transitions, 43 changer transitions 0/141 dead transitions. [2024-11-17 07:56:53,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 1194 flow [2024-11-17 07:56:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-11-17 07:56:53,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2024-11-17 07:56:53,619 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 769 flow. Second operand 6 states and 161 transitions. [2024-11-17 07:56:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 1194 flow [2024-11-17 07:56:53,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 141 transitions, 1157 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:53,632 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 912 flow [2024-11-17 07:56:53,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2024-11-17 07:56:53,633 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2024-11-17 07:56:53,633 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 912 flow [2024-11-17 07:56:53,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-11-17 07:56:53,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:53,633 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:53,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:56:53,834 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,SelfDestructingSolverStorable13 [2024-11-17 07:56:53,834 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:53,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:53,834 INFO L85 PathProgramCache]: Analyzing trace with hash -475830051, now seen corresponding path program 2 times [2024-11-17 07:56:53,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:53,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495704343] [2024-11-17 07:56:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495704343] [2024-11-17 07:56:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495704343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672926659] [2024-11-17 07:56:53,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:53,902 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) [2024-11-17 07:56:53,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:56:53,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:56:53,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:53,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:53,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:54,005 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:54,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672926659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:54,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:54,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:56:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124816026] [2024-11-17 07:56:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:54,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:56:54,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:56:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:56:54,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-17 07:56:54,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 912 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-17 07:56:54,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:54,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-17 07:56:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:54,245 INFO L124 PetriNetUnfolderBase]: 895/2169 cut-off events. [2024-11-17 07:56:54,245 INFO L125 PetriNetUnfolderBase]: For 11185/11289 co-relation queries the response was YES. [2024-11-17 07:56:54,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 2169 events. 895/2169 cut-off events. For 11185/11289 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15924 event pairs, 260 based on Foata normal form. 38/2069 useless extension candidates. Maximal degree in co-relation 8295. Up to 634 conditions per place. [2024-11-17 07:56:54,259 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 135 selfloop transitions, 7 changer transitions 1/163 dead transitions. [2024-11-17 07:56:54,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 163 transitions, 1813 flow [2024-11-17 07:56:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-17 07:56:54,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-11-17 07:56:54,260 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 912 flow. Second operand 4 states and 105 transitions. [2024-11-17 07:56:54,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 163 transitions, 1813 flow [2024-11-17 07:56:54,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 163 transitions, 1754 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:54,317 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 887 flow [2024-11-17 07:56:54,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=887, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2024-11-17 07:56:54,318 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2024-11-17 07:56:54,318 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 887 flow [2024-11-17 07:56:54,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-17 07:56:54,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:54,318 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:54,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 07:56:54,519 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,SelfDestructingSolverStorable14 [2024-11-17 07:56:54,519 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:54,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 232260045, now seen corresponding path program 1 times [2024-11-17 07:56:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412857728] [2024-11-17 07:56:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412857728] [2024-11-17 07:56:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412857728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993623772] [2024-11-17 07:56:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:54,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:54,984 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) [2024-11-17 07:56:54,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:56:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 07:56:55,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:55,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:55,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:56:55,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-17 07:56:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993623772] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 07:56:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 6] total 19 [2024-11-17 07:56:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516263250] [2024-11-17 07:56:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:55,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:56:55,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:55,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 887 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-11-17 07:56:55,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:55,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:55,532 INFO L124 PetriNetUnfolderBase]: 747/1956 cut-off events. [2024-11-17 07:56:55,532 INFO L125 PetriNetUnfolderBase]: For 8955/9079 co-relation queries the response was YES. [2024-11-17 07:56:55,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 1956 events. 747/1956 cut-off events. For 8955/9079 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14457 event pairs, 193 based on Foata normal form. 7/1871 useless extension candidates. Maximal degree in co-relation 7163. Up to 1049 conditions per place. [2024-11-17 07:56:55,545 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 86 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-11-17 07:56:55,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 127 transitions, 1203 flow [2024-11-17 07:56:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-17 07:56:55,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-11-17 07:56:55,546 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 887 flow. Second operand 5 states and 135 transitions. [2024-11-17 07:56:55,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 127 transitions, 1203 flow [2024-11-17 07:56:55,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 1181 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:55,573 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 969 flow [2024-11-17 07:56:55,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=969, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-11-17 07:56:55,574 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 73 predicate places. [2024-11-17 07:56:55,574 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 969 flow [2024-11-17 07:56:55,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-11-17 07:56:55,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:55,575 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:55,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 07:56:55,775 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,SelfDestructingSolverStorable15 [2024-11-17 07:56:55,775 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:55,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1865829250, now seen corresponding path program 1 times [2024-11-17 07:56:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157926596] [2024-11-17 07:56:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157926596] [2024-11-17 07:56:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157926596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333375049] [2024-11-17 07:56:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:55,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:55,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:55,845 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) [2024-11-17 07:56:55,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:56:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:55,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:55,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333375049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:55,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:55,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:56:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948815596] [2024-11-17 07:56:55,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:55,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:55,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:56,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-17 07:56:56,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 969 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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) [2024-11-17 07:56:56,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:56,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-17 07:56:56,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:56,473 INFO L124 PetriNetUnfolderBase]: 1367/3351 cut-off events. [2024-11-17 07:56:56,473 INFO L125 PetriNetUnfolderBase]: For 16817/17129 co-relation queries the response was YES. [2024-11-17 07:56:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 3351 events. 1367/3351 cut-off events. For 16817/17129 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24642 event pairs, 283 based on Foata normal form. 50/3141 useless extension candidates. Maximal degree in co-relation 12026. Up to 1168 conditions per place. [2024-11-17 07:56:56,496 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 258 selfloop transitions, 13 changer transitions 0/293 dead transitions. [2024-11-17 07:56:56,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 293 transitions, 3404 flow [2024-11-17 07:56:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-11-17 07:56:56,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2024-11-17 07:56:56,498 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 969 flow. Second operand 10 states and 276 transitions. [2024-11-17 07:56:56,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 293 transitions, 3404 flow [2024-11-17 07:56:56,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 293 transitions, 3270 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:56,580 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 991 flow [2024-11-17 07:56:56,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=991, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2024-11-17 07:56:56,580 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 82 predicate places. [2024-11-17 07:56:56,580 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 991 flow [2024-11-17 07:56:56,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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) [2024-11-17 07:56:56,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:56,581 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:56,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:56:56,781 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,SelfDestructingSolverStorable16 [2024-11-17 07:56:56,781 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:56,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 194145568, now seen corresponding path program 1 times [2024-11-17 07:56:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:56,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200680798] [2024-11-17 07:56:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200680798] [2024-11-17 07:56:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200680798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944726728] [2024-11-17 07:56:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:56,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:56,863 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) [2024-11-17 07:56:56,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:56:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:56,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:56,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:56,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944726728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:56,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:56,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:56:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507058248] [2024-11-17 07:56:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:56,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:56,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:56:56,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-17 07:56:56,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 991 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:56,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:56,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-17 07:56:56,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:57,308 INFO L124 PetriNetUnfolderBase]: 1482/3923 cut-off events. [2024-11-17 07:56:57,308 INFO L125 PetriNetUnfolderBase]: For 20859/21222 co-relation queries the response was YES. [2024-11-17 07:56:57,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15014 conditions, 3923 events. 1482/3923 cut-off events. For 20859/21222 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 29265 event pairs, 287 based on Foata normal form. 74/3783 useless extension candidates. Maximal degree in co-relation 14976. Up to 1292 conditions per place. [2024-11-17 07:56:57,336 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 94 selfloop transitions, 23 changer transitions 24/166 dead transitions. [2024-11-17 07:56:57,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 166 transitions, 1625 flow [2024-11-17 07:56:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-17 07:56:57,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201923076923077 [2024-11-17 07:56:57,338 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 991 flow. Second operand 4 states and 129 transitions. [2024-11-17 07:56:57,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 166 transitions, 1625 flow [2024-11-17 07:56:57,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 166 transitions, 1561 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:57,403 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 894 flow [2024-11-17 07:56:57,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=894, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-11-17 07:56:57,403 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 80 predicate places. [2024-11-17 07:56:57,403 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 894 flow [2024-11-17 07:56:57,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:57,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:57,404 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:57,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 07:56:57,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:56:57,605 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:57,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1367963608, now seen corresponding path program 3 times [2024-11-17 07:56:57,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:57,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92770128] [2024-11-17 07:56:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92770128] [2024-11-17 07:56:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92770128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232402294] [2024-11-17 07:56:58,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:56:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:58,393 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) [2024-11-17 07:56:58,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:56:58,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-17 07:56:58,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:58,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:58,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:56:58,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:58,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232402294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:58,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:58,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2024-11-17 07:56:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131395916] [2024-11-17 07:56:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:58,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:58,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:56:58,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:56:58,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:58,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:58,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:56:58,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:58,950 INFO L124 PetriNetUnfolderBase]: 1594/3962 cut-off events. [2024-11-17 07:56:58,951 INFO L125 PetriNetUnfolderBase]: For 24431/24571 co-relation queries the response was YES. [2024-11-17 07:56:58,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15293 conditions, 3962 events. 1594/3962 cut-off events. For 24431/24571 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 28405 event pairs, 273 based on Foata normal form. 88/3849 useless extension candidates. Maximal degree in co-relation 15253. Up to 1083 conditions per place. [2024-11-17 07:56:58,972 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 108 selfloop transitions, 18 changer transitions 0/148 dead transitions. [2024-11-17 07:56:58,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 148 transitions, 1447 flow [2024-11-17 07:56:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-11-17 07:56:58,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2024-11-17 07:56:58,973 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 894 flow. Second operand 5 states and 144 transitions. [2024-11-17 07:56:58,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 148 transitions, 1447 flow [2024-11-17 07:56:59,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 148 transitions, 1340 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-11-17 07:56:59,005 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 912 flow [2024-11-17 07:56:59,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=912, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-11-17 07:56:59,005 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 61 predicate places. [2024-11-17 07:56:59,005 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 912 flow [2024-11-17 07:56:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:56:59,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:59,005 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:59,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:59,206 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:56:59,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash -174562373, now seen corresponding path program 2 times [2024-11-17 07:56:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:59,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281238999] [2024-11-17 07:56:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281238999] [2024-11-17 07:56:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281238999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506386350] [2024-11-17 07:56:59,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:59,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:59,913 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:59,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 07:56:59,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:59,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:59,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:56:59,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:00,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506386350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:00,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2024-11-17 07:57:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035275174] [2024-11-17 07:57:00,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:00,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:57:00,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:57:00,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 912 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:57:00,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:00,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:57:00,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:00,486 INFO L124 PetriNetUnfolderBase]: 1574/3858 cut-off events. [2024-11-17 07:57:00,487 INFO L125 PetriNetUnfolderBase]: For 23175/23359 co-relation queries the response was YES. [2024-11-17 07:57:00,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14870 conditions, 3858 events. 1574/3858 cut-off events. For 23175/23359 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 27810 event pairs, 454 based on Foata normal form. 7/3648 useless extension candidates. Maximal degree in co-relation 14832. Up to 2393 conditions per place. [2024-11-17 07:57:00,511 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 87 selfloop transitions, 6 changer transitions 4/119 dead transitions. [2024-11-17 07:57:00,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 119 transitions, 1144 flow [2024-11-17 07:57:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-17 07:57:00,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-11-17 07:57:00,513 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 912 flow. Second operand 5 states and 136 transitions. [2024-11-17 07:57:00,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 119 transitions, 1144 flow [2024-11-17 07:57:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 119 transitions, 1102 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:00,545 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 859 flow [2024-11-17 07:57:00,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2024-11-17 07:57:00,546 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2024-11-17 07:57:00,546 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 859 flow [2024-11-17 07:57:00,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:57:00,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:00,547 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:00,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 07:57:00,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:00,747 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:57:00,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1546027673, now seen corresponding path program 2 times [2024-11-17 07:57:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367027633] [2024-11-17 07:57:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367027633] [2024-11-17 07:57:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367027633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629131139] [2024-11-17 07:57:01,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:01,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:01,463 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:01,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 07:57:01,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:01,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:57:01,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:01,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629131139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2024-11-17 07:57:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473352949] [2024-11-17 07:57:01,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:01,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:57:01,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-17 07:57:01,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:57:01,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:01,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-17 07:57:01,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:02,073 INFO L124 PetriNetUnfolderBase]: 1569/3848 cut-off events. [2024-11-17 07:57:02,073 INFO L125 PetriNetUnfolderBase]: For 18840/19003 co-relation queries the response was YES. [2024-11-17 07:57:02,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14331 conditions, 3848 events. 1569/3848 cut-off events. For 18840/19003 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 27728 event pairs, 441 based on Foata normal form. 7/3643 useless extension candidates. Maximal degree in co-relation 14295. Up to 2391 conditions per place. [2024-11-17 07:57:02,098 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 78 selfloop transitions, 4 changer transitions 17/121 dead transitions. [2024-11-17 07:57:02,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 1113 flow [2024-11-17 07:57:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-11-17 07:57:02,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-11-17 07:57:02,099 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 859 flow. Second operand 6 states and 158 transitions. [2024-11-17 07:57:02,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 1113 flow [2024-11-17 07:57:02,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 121 transitions, 1087 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:02,121 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 816 flow [2024-11-17 07:57:02,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=816, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-11-17 07:57:02,122 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 62 predicate places. [2024-11-17 07:57:02,122 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 816 flow [2024-11-17 07:57:02,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-17 07:57:02,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:02,122 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:02,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:02,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:02,323 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:57:02,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash -74812544, now seen corresponding path program 1 times [2024-11-17 07:57:02,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:02,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469741842] [2024-11-17 07:57:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469741842] [2024-11-17 07:57:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469741842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115738108] [2024-11-17 07:57:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:03,001 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:03,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 07:57:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:03,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 07:57:03,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:03,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:03,795 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-17 07:57:03,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-11-17 07:57:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:04,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115738108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:04,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:04,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2024-11-17 07:57:04,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518851159] [2024-11-17 07:57:04,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:04,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-17 07:57:04,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:04,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-17 07:57:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 07:57:04,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 07:57:04,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 816 flow. Second operand has 40 states, 40 states have (on average 15.6) internal successors, (624), 40 states have internal predecessors, (624), 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) [2024-11-17 07:57:04,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:04,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 07:57:04,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:12,245 INFO L124 PetriNetUnfolderBase]: 8869/19616 cut-off events. [2024-11-17 07:57:12,245 INFO L125 PetriNetUnfolderBase]: For 88144/88962 co-relation queries the response was YES. [2024-11-17 07:57:12,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72249 conditions, 19616 events. 8869/19616 cut-off events. For 88144/88962 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 179595 event pairs, 463 based on Foata normal form. 973/19938 useless extension candidates. Maximal degree in co-relation 72214. Up to 2933 conditions per place. [2024-11-17 07:57:12,345 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 952 selfloop transitions, 398 changer transitions 41/1406 dead transitions. [2024-11-17 07:57:12,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1406 transitions, 12426 flow [2024-11-17 07:57:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-17 07:57:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-11-17 07:57:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 2517 transitions. [2024-11-17 07:57:12,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4283526208304969 [2024-11-17 07:57:12,352 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 816 flow. Second operand 113 states and 2517 transitions. [2024-11-17 07:57:12,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1406 transitions, 12426 flow [2024-11-17 07:57:12,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1406 transitions, 12330 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:12,519 INFO L231 Difference]: Finished difference. Result has 266 places, 545 transitions, 7081 flow [2024-11-17 07:57:12,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=7081, PETRI_PLACES=266, PETRI_TRANSITIONS=545} [2024-11-17 07:57:12,520 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 218 predicate places. [2024-11-17 07:57:12,520 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 545 transitions, 7081 flow [2024-11-17 07:57:12,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 15.6) internal successors, (624), 40 states have internal predecessors, (624), 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) [2024-11-17 07:57:12,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:12,520 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:12,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-17 07:57:12,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:12,721 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:57:12,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1878517696, now seen corresponding path program 2 times [2024-11-17 07:57:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477168815] [2024-11-17 07:57:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:13,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477168815] [2024-11-17 07:57:13,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477168815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905842744] [2024-11-17 07:57:13,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:13,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:13,428 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:13,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 07:57:13,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:57:13,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:13,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-17 07:57:13,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:13,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:57:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:14,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:14,858 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 77 treesize of output 69 [2024-11-17 07:57:14,885 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-17 07:57:14,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 124 [2024-11-17 07:57:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:15,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905842744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:15,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:15,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-11-17 07:57:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291824883] [2024-11-17 07:57:15,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:15,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-17 07:57:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-17 07:57:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1504, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 07:57:15,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 07:57:15,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 545 transitions, 7081 flow. Second operand has 42 states, 42 states have (on average 15.523809523809524) internal successors, (652), 42 states have internal predecessors, (652), 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) [2024-11-17 07:57:15,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:15,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 07:57:15,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:30,509 INFO L124 PetriNetUnfolderBase]: 15792/35241 cut-off events. [2024-11-17 07:57:30,509 INFO L125 PetriNetUnfolderBase]: For 1198328/1201288 co-relation queries the response was YES. [2024-11-17 07:57:30,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178695 conditions, 35241 events. 15792/35241 cut-off events. For 1198328/1201288 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 349413 event pairs, 1881 based on Foata normal form. 1974/35957 useless extension candidates. Maximal degree in co-relation 178607. Up to 8460 conditions per place. [2024-11-17 07:57:30,969 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 1343 selfloop transitions, 684 changer transitions 55/2097 dead transitions. [2024-11-17 07:57:30,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 2097 transitions, 27376 flow [2024-11-17 07:57:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-17 07:57:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2024-11-17 07:57:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 1975 transitions. [2024-11-17 07:57:30,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39979757085020245 [2024-11-17 07:57:30,974 INFO L175 Difference]: Start difference. First operand has 266 places, 545 transitions, 7081 flow. Second operand 95 states and 1975 transitions. [2024-11-17 07:57:30,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 2097 transitions, 27376 flow [2024-11-17 07:57:37,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 2097 transitions, 22864 flow, removed 2238 selfloop flow, removed 8 redundant places. [2024-11-17 07:57:37,616 INFO L231 Difference]: Finished difference. Result has 397 places, 1188 transitions, 15692 flow [2024-11-17 07:57:37,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=15692, PETRI_PLACES=397, PETRI_TRANSITIONS=1188} [2024-11-17 07:57:37,617 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 349 predicate places. [2024-11-17 07:57:37,617 INFO L471 AbstractCegarLoop]: Abstraction has has 397 places, 1188 transitions, 15692 flow [2024-11-17 07:57:37,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 15.523809523809524) internal successors, (652), 42 states have internal predecessors, (652), 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) [2024-11-17 07:57:37,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:37,617 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:37,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:37,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:37,818 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:57:37,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1796224772, now seen corresponding path program 3 times [2024-11-17 07:57:37,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:37,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894136133] [2024-11-17 07:57:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894136133] [2024-11-17 07:57:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894136133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201107867] [2024-11-17 07:57:38,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:57:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:38,338 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:38,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 07:57:38,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 07:57:38,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:38,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:57:38,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:38,520 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 [2024-11-17 07:57:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:38,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:39,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-17 07:57:39,707 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-17 07:57:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:39,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201107867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:39,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:39,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 38 [2024-11-17 07:57:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729752026] [2024-11-17 07:57:39,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:39,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-17 07:57:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-17 07:57:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 07:57:40,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 07:57:40,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1188 transitions, 15692 flow. Second operand has 40 states, 40 states have (on average 15.575) internal successors, (623), 40 states have internal predecessors, (623), 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) [2024-11-17 07:57:40,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:40,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 07:57:40,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:44,261 INFO L124 PetriNetUnfolderBase]: 3802/8799 cut-off events. [2024-11-17 07:57:44,261 INFO L125 PetriNetUnfolderBase]: For 391101/391743 co-relation queries the response was YES. [2024-11-17 07:57:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46397 conditions, 8799 events. 3802/8799 cut-off events. For 391101/391743 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 72012 event pairs, 220 based on Foata normal form. 565/9079 useless extension candidates. Maximal degree in co-relation 46272. Up to 1389 conditions per place. [2024-11-17 07:57:44,341 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 253 selfloop transitions, 187 changer transitions 24/479 dead transitions. [2024-11-17 07:57:44,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 479 transitions, 6795 flow [2024-11-17 07:57:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-17 07:57:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-17 07:57:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 615 transitions. [2024-11-17 07:57:44,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-11-17 07:57:44,343 INFO L175 Difference]: Start difference. First operand has 397 places, 1188 transitions, 15692 flow. Second operand 30 states and 615 transitions. [2024-11-17 07:57:44,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 479 transitions, 6795 flow [2024-11-17 07:57:45,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 479 transitions, 5626 flow, removed 524 selfloop flow, removed 87 redundant places. [2024-11-17 07:57:45,887 INFO L231 Difference]: Finished difference. Result has 256 places, 319 transitions, 4375 flow [2024-11-17 07:57:45,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4375, PETRI_PLACES=256, PETRI_TRANSITIONS=319} [2024-11-17 07:57:45,888 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 208 predicate places. [2024-11-17 07:57:45,888 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 319 transitions, 4375 flow [2024-11-17 07:57:45,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 15.575) internal successors, (623), 40 states have internal predecessors, (623), 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) [2024-11-17 07:57:45,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:45,889 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:45,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:46,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,089 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-17 07:57:46,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1586687800, now seen corresponding path program 4 times [2024-11-17 07:57:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377653408] [2024-11-17 07:57:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377653408] [2024-11-17 07:57:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377653408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28757058] [2024-11-17 07:57:46,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:57:46,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:46,869 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:46,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 07:57:46,940 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:57:46,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:46,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 07:57:46,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:47,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:57:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:47,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:47,918 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 42 treesize of output 38 [2024-11-17 07:57:47,924 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:57:47,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 49 [2024-11-17 07:57:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28757058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:48,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-11-17 07:57:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250727051] [2024-11-17 07:57:48,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-17 07:57:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-17 07:57:48,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 07:57:48,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 07:57:48,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 319 transitions, 4375 flow. Second operand has 42 states, 42 states have (on average 15.523809523809524) internal successors, (652), 42 states have internal predecessors, (652), 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) [2024-11-17 07:57:48,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 07:57:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand