./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.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-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:54:16,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:54:16,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:54:16,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:54:16,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:54:16,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:54:16,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:54:16,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:54:16,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:54:16,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:54:16,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:54:16,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:54:16,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:54:16,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:54:16,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:54:16,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:54:16,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:54:16,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:54:16,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:54:16,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:54:16,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:54:16,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:54:16,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:54:16,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:54:16,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:54:17,000 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:54:17,000 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:54:17,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:54:17,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:54:17,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:54:17,001 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:54:17,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:54:17,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:54:17,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:54:17,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:54:17,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:54:17,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:54:17,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:54:17,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:54:17,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:54:17,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:54:17,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:54:17,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:54:17,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:54:17,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-17 07:54:17,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:54:17,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:54:17,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:54:17,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:54:17,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:54:17,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-17 07:54:18,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:54:18,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:54:18,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-17 07:54:18,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad0bf63f/8591171e5c63482bb2638b9ac7bdd242/FLAGee9d4c75b [2024-11-17 07:54:18,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad0bf63f/8591171e5c63482bb2638b9ac7bdd242 [2024-11-17 07:54:19,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:54:19,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:54:19,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:54:19,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:54:19,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:54:19,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f43f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19, skipping insertion in model container [2024-11-17 07:54:19,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:54:19,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:54:19,343 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:54:19,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:54:19,396 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:54:19,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19 WrapperNode [2024-11-17 07:54:19,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:54:19,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:54:19,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:54:19,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:54:19,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,452 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-17 07:54:19,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:54:19,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:54:19,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:54:19,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:54:19,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,494 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-17 07:54:19,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:54:19,527 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:54:19,527 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:54:19,527 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:54:19,528 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (1/1) ... [2024-11-17 07:54:19,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:54:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:19,571 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 07:54:19,575 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 07:54:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:54:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:54:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:54:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:54:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:54:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:54:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:54:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:54:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:54:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:54:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:54:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:54:19,635 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 07:54:19,769 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:54:19,773 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:54:20,338 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:54:20,338 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:54:20,775 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:54:20,776 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:54:20,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:54:20 BoogieIcfgContainer [2024-11-17 07:54:20,777 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:54:20,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:54:20,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:54:20,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:54:20,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:54:19" (1/3) ... [2024-11-17 07:54:20,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d612fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:54:20, skipping insertion in model container [2024-11-17 07:54:20,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:19" (2/3) ... [2024-11-17 07:54:20,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d612fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:54:20, skipping insertion in model container [2024-11-17 07:54:20,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:54:20" (3/3) ... [2024-11-17 07:54:20,788 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-17 07:54:20,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:54:20,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-17 07:54:20,808 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:54:20,889 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:54:20,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 96 transitions, 213 flow [2024-11-17 07:54:20,982 INFO L124 PetriNetUnfolderBase]: 20/93 cut-off events. [2024-11-17 07:54:20,983 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:54:20,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 20/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-17 07:54:20,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 96 transitions, 213 flow [2024-11-17 07:54:20,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 91 transitions, 197 flow [2024-11-17 07:54:21,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:54:21,014 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;@4104435f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:54:21,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-17 07:54:21,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:54:21,020 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:54:21,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:54:21,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:21,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:54:21,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:21,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 29713739, now seen corresponding path program 1 times [2024-11-17 07:54:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672789914] [2024-11-17 07:54:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:21,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:21,420 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 07:54:21,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672789914] [2024-11-17 07:54:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672789914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:21,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322343197] [2024-11-17 07:54:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:21,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:54:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:54:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:54:21,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-17 07:54:21,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:54:21,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:21,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-17 07:54:21,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:22,271 INFO L124 PetriNetUnfolderBase]: 3370/4969 cut-off events. [2024-11-17 07:54:22,271 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-17 07:54:22,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9491 conditions, 4969 events. 3370/4969 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27878 event pairs, 2182 based on Foata normal form. 9/3120 useless extension candidates. Maximal degree in co-relation 9006. Up to 4308 conditions per place. [2024-11-17 07:54:22,372 INFO L140 encePairwiseOnDemand]: 66/96 looper letters, 51 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-17 07:54:22,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 309 flow [2024-11-17 07:54:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:54:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:54:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-17 07:54:22,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-17 07:54:22,390 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 197 flow. Second operand 4 states and 196 transitions. [2024-11-17 07:54:22,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 309 flow [2024-11-17 07:54:22,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 300 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:54:22,405 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 248 flow [2024-11-17 07:54:22,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2024-11-17 07:54:22,415 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2024-11-17 07:54:22,416 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 248 flow [2024-11-17 07:54:22,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:54:22,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:22,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:54:22,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:54:22,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:22,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 743261125, now seen corresponding path program 1 times [2024-11-17 07:54:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:22,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586935104] [2024-11-17 07:54:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:54:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586935104] [2024-11-17 07:54:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586935104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:54:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060780009] [2024-11-17 07:54:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:22,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:22,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:22,603 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 07:54:22,607 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 07:54:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:22,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:54:22,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:54:22,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:54:22,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060780009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:54:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:54:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082226481] [2024-11-17 07:54:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:22,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:54:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:54:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:54:22,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-17 07:54:22,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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 07:54:22,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:22,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-17 07:54:22,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:23,480 INFO L124 PetriNetUnfolderBase]: 3370/4966 cut-off events. [2024-11-17 07:54:23,481 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-17 07:54:23,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9451 conditions, 4966 events. 3370/4966 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27795 event pairs, 2182 based on Foata normal form. 3/3111 useless extension candidates. Maximal degree in co-relation 9372. Up to 4293 conditions per place. [2024-11-17 07:54:23,530 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 41 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-11-17 07:54:23,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 352 flow [2024-11-17 07:54:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:54:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:54:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-11-17 07:54:23,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3975694444444444 [2024-11-17 07:54:23,535 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 248 flow. Second operand 6 states and 229 transitions. [2024-11-17 07:54:23,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 352 flow [2024-11-17 07:54:23,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:54:23,540 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 270 flow [2024-11-17 07:54:23,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-11-17 07:54:23,543 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-11-17 07:54:23,543 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 270 flow [2024-11-17 07:54:23,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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 07:54:23,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:23,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:54:23,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:54:23,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:23,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:23,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1566259283, now seen corresponding path program 1 times [2024-11-17 07:54:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616669176] [2024-11-17 07:54:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:23,895 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 07:54:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616669176] [2024-11-17 07:54:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616669176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:54:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713610316] [2024-11-17 07:54:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:23,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:23,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:23,899 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 07:54:23,900 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 07:54:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:23,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:54:23,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:24,053 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 07:54:24,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:54:24,106 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 07:54:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713610316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:54:24,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:54:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:54:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987127370] [2024-11-17 07:54:24,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:54:24,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:54:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:54:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:54:24,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-17 07:54:24,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 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 07:54:24,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:24,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-17 07:54:24,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:24,957 INFO L124 PetriNetUnfolderBase]: 3379/5020 cut-off events. [2024-11-17 07:54:24,957 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-17 07:54:24,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 5020 events. 3379/5020 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 28398 event pairs, 2182 based on Foata normal form. 9/3174 useless extension candidates. Maximal degree in co-relation 9374. Up to 4308 conditions per place. [2024-11-17 07:54:25,015 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 48 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-11-17 07:54:25,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 614 flow [2024-11-17 07:54:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:54:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:54:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 374 transitions. [2024-11-17 07:54:25,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38958333333333334 [2024-11-17 07:54:25,020 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 270 flow. Second operand 10 states and 374 transitions. [2024-11-17 07:54:25,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 614 flow [2024-11-17 07:54:25,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 531 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-17 07:54:25,035 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 485 flow [2024-11-17 07:54:25,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2024-11-17 07:54:25,040 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-17 07:54:25,041 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 485 flow [2024-11-17 07:54:25,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 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 07:54:25,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:25,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:25,081 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 07:54:25,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-17 07:54:25,242 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:25,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash -338249183, now seen corresponding path program 1 times [2024-11-17 07:54:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:25,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019981624] [2024-11-17 07:54:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:25,340 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 07:54:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019981624] [2024-11-17 07:54:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019981624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:54:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753559402] [2024-11-17 07:54:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:25,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:25,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:54:25,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:25,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:25,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:54:25,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:26,290 INFO L124 PetriNetUnfolderBase]: 5838/8657 cut-off events. [2024-11-17 07:54:26,291 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-11-17 07:54:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16543 conditions, 8657 events. 5838/8657 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 51928 event pairs, 1884 based on Foata normal form. 214/5807 useless extension candidates. Maximal degree in co-relation 16439. Up to 4473 conditions per place. [2024-11-17 07:54:26,353 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 108 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-17 07:54:26,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 139 transitions, 769 flow [2024-11-17 07:54:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:26,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-17 07:54:26,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-11-17 07:54:26,355 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 485 flow. Second operand 3 states and 181 transitions. [2024-11-17 07:54:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 139 transitions, 769 flow [2024-11-17 07:54:26,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 732 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:54:26,361 INFO L231 Difference]: Finished difference. Result has 84 places, 112 transitions, 473 flow [2024-11-17 07:54:26,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=84, PETRI_TRANSITIONS=112} [2024-11-17 07:54:26,362 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-11-17 07:54:26,362 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 112 transitions, 473 flow [2024-11-17 07:54:26,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:26,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:26,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:26,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:54:26,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:26,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:26,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1895788083, now seen corresponding path program 1 times [2024-11-17 07:54:26,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:26,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046739128] [2024-11-17 07:54:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:26,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:26,409 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 07:54:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046739128] [2024-11-17 07:54:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046739128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:26,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:26,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911497836] [2024-11-17 07:54:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:26,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:26,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-17 07:54:26,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 112 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 07:54:26,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:26,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-17 07:54:26,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:27,452 INFO L124 PetriNetUnfolderBase]: 8495/12372 cut-off events. [2024-11-17 07:54:27,452 INFO L125 PetriNetUnfolderBase]: For 1070/1082 co-relation queries the response was YES. [2024-11-17 07:54:27,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25482 conditions, 12372 events. 8495/12372 cut-off events. For 1070/1082 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 70150 event pairs, 3181 based on Foata normal form. 0/9382 useless extension candidates. Maximal degree in co-relation 25381. Up to 5816 conditions per place. [2024-11-17 07:54:27,579 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2024-11-17 07:54:27,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 763 flow [2024-11-17 07:54:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-17 07:54:27,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-17 07:54:27,581 INFO L175 Difference]: Start difference. First operand has 84 places, 112 transitions, 473 flow. Second operand 3 states and 165 transitions. [2024-11-17 07:54:27,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 763 flow [2024-11-17 07:54:27,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 760 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:27,586 INFO L231 Difference]: Finished difference. Result has 87 places, 113 transitions, 492 flow [2024-11-17 07:54:27,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=87, PETRI_TRANSITIONS=113} [2024-11-17 07:54:27,588 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2024-11-17 07:54:27,588 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 113 transitions, 492 flow [2024-11-17 07:54:27,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 07:54:27,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:27,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:27,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:54:27,589 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:27,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash 635763187, now seen corresponding path program 1 times [2024-11-17 07:54:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088629057] [2024-11-17 07:54:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:27,664 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 07:54:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:27,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088629057] [2024-11-17 07:54:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088629057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235908559] [2024-11-17 07:54:27,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:27,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:27,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:54:27,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:27,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:27,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:54:27,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:29,397 INFO L124 PetriNetUnfolderBase]: 10419/15941 cut-off events. [2024-11-17 07:54:29,397 INFO L125 PetriNetUnfolderBase]: For 3360/3468 co-relation queries the response was YES. [2024-11-17 07:54:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33918 conditions, 15941 events. 10419/15941 cut-off events. For 3360/3468 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 99341 event pairs, 4177 based on Foata normal form. 315/12577 useless extension candidates. Maximal degree in co-relation 33816. Up to 7196 conditions per place. [2024-11-17 07:54:29,516 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 113 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-17 07:54:29,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 808 flow [2024-11-17 07:54:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-17 07:54:29,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-11-17 07:54:29,518 INFO L175 Difference]: Start difference. First operand has 87 places, 113 transitions, 492 flow. Second operand 3 states and 181 transitions. [2024-11-17 07:54:29,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 808 flow [2024-11-17 07:54:29,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 796 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:54:29,527 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 498 flow [2024-11-17 07:54:29,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2024-11-17 07:54:29,528 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-11-17 07:54:29,529 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 498 flow [2024-11-17 07:54:29,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:29,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:29,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:29,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:54:29,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:29,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1766175660, now seen corresponding path program 1 times [2024-11-17 07:54:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733238984] [2024-11-17 07:54:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:29,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:29,588 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 07:54:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733238984] [2024-11-17 07:54:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733238984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448390728] [2024-11-17 07:54:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:29,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:29,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-17 07:54:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 07:54:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:29,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-17 07:54:29,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:31,061 INFO L124 PetriNetUnfolderBase]: 14063/20672 cut-off events. [2024-11-17 07:54:31,061 INFO L125 PetriNetUnfolderBase]: For 3324/3548 co-relation queries the response was YES. [2024-11-17 07:54:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43514 conditions, 20672 events. 14063/20672 cut-off events. For 3324/3548 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 124314 event pairs, 6937 based on Foata normal form. 0/16033 useless extension candidates. Maximal degree in co-relation 43411. Up to 12185 conditions per place. [2024-11-17 07:54:31,214 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-11-17 07:54:31,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 798 flow [2024-11-17 07:54:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-17 07:54:31,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-17 07:54:31,216 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 498 flow. Second operand 3 states and 171 transitions. [2024-11-17 07:54:31,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 798 flow [2024-11-17 07:54:31,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 141 transitions, 796 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:31,224 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 514 flow [2024-11-17 07:54:31,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-11-17 07:54:31,225 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-11-17 07:54:31,225 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 514 flow [2024-11-17 07:54:31,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 07:54:31,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:31,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:31,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:54:31,226 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:31,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -147616319, now seen corresponding path program 1 times [2024-11-17 07:54:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425092621] [2024-11-17 07:54:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:31,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:31,381 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 07:54:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425092621] [2024-11-17 07:54:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425092621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907861580] [2024-11-17 07:54:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:31,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:54:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:54:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:54:31,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-17 07:54:31,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 07:54:31,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:31,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-17 07:54:31,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:33,248 INFO L124 PetriNetUnfolderBase]: 12513/19201 cut-off events. [2024-11-17 07:54:33,248 INFO L125 PetriNetUnfolderBase]: For 6240/6632 co-relation queries the response was YES. [2024-11-17 07:54:33,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41763 conditions, 19201 events. 12513/19201 cut-off events. For 6240/6632 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 120014 event pairs, 9361 based on Foata normal form. 112/15053 useless extension candidates. Maximal degree in co-relation 41593. Up to 15262 conditions per place. [2024-11-17 07:54:33,403 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 136 selfloop transitions, 4 changer transitions 2/169 dead transitions. [2024-11-17 07:54:33,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1043 flow [2024-11-17 07:54:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:54:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:54:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-11-17 07:54:33,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-17 07:54:33,406 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 514 flow. Second operand 5 states and 240 transitions. [2024-11-17 07:54:33,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1043 flow [2024-11-17 07:54:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:54:33,421 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 526 flow [2024-11-17 07:54:33,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2024-11-17 07:54:33,424 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2024-11-17 07:54:33,424 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 526 flow [2024-11-17 07:54:33,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 07:54:33,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:33,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:33,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:54:33,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:33,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:33,425 INFO L85 PathProgramCache]: Analyzing trace with hash -281136555, now seen corresponding path program 1 times [2024-11-17 07:54:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950862280] [2024-11-17 07:54:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:33,480 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 07:54:33,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:33,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950862280] [2024-11-17 07:54:33,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950862280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:33,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:33,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098624614] [2024-11-17 07:54:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:33,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:33,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:33,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:33,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-17 07:54:33,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 07:54:33,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:33,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-17 07:54:33,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:36,255 INFO L124 PetriNetUnfolderBase]: 23803/34749 cut-off events. [2024-11-17 07:54:36,256 INFO L125 PetriNetUnfolderBase]: For 9597/10411 co-relation queries the response was YES. [2024-11-17 07:54:36,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76651 conditions, 34749 events. 23803/34749 cut-off events. For 9597/10411 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 216584 event pairs, 13589 based on Foata normal form. 0/26724 useless extension candidates. Maximal degree in co-relation 76483. Up to 16287 conditions per place. [2024-11-17 07:54:36,480 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2024-11-17 07:54:36,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 144 transitions, 844 flow [2024-11-17 07:54:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-17 07:54:36,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-17 07:54:36,481 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 526 flow. Second operand 3 states and 171 transitions. [2024-11-17 07:54:36,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 144 transitions, 844 flow [2024-11-17 07:54:36,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 144 transitions, 840 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:36,496 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 548 flow [2024-11-17 07:54:36,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2024-11-17 07:54:36,497 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2024-11-17 07:54:36,497 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 548 flow [2024-11-17 07:54:36,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 07:54:36,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:36,498 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:54:36,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:54:36,498 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:36,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1928193883, now seen corresponding path program 2 times [2024-11-17 07:54:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:36,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422007971] [2024-11-17 07:54:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:36,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:36,664 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 07:54:36,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422007971] [2024-11-17 07:54:36,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422007971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:54:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392551570] [2024-11-17 07:54:36,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:54:36,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:36,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:36,668 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 07:54:36,669 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 07:54:36,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:54:36,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:54:36,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:54:36,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:36,806 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 07:54:36,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:54:36,850 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 07:54:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392551570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:54:36,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:54:36,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:54:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931595360] [2024-11-17 07:54:36,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:54:36,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:54:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:54:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:54:36,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 96 [2024-11-17 07:54:36,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 548 flow. Second operand has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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 07:54:36,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:36,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 96 [2024-11-17 07:54:36,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:39,569 INFO L124 PetriNetUnfolderBase]: 18820/28946 cut-off events. [2024-11-17 07:54:39,570 INFO L125 PetriNetUnfolderBase]: For 12863/13981 co-relation queries the response was YES. [2024-11-17 07:54:39,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65428 conditions, 28946 events. 18820/28946 cut-off events. For 12863/13981 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 197145 event pairs, 15031 based on Foata normal form. 10/23033 useless extension candidates. Maximal degree in co-relation 65195. Up to 24912 conditions per place. [2024-11-17 07:54:39,804 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 56 selfloop transitions, 53 changer transitions 2/136 dead transitions. [2024-11-17 07:54:39,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 136 transitions, 835 flow [2024-11-17 07:54:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 07:54:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 07:54:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 465 transitions. [2024-11-17 07:54:39,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34598214285714285 [2024-11-17 07:54:39,807 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 548 flow. Second operand 14 states and 465 transitions. [2024-11-17 07:54:39,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 136 transitions, 835 flow [2024-11-17 07:54:39,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 789 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-17 07:54:39,827 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 627 flow [2024-11-17 07:54:39,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=627, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-11-17 07:54:39,829 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2024-11-17 07:54:39,829 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 627 flow [2024-11-17 07:54:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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 07:54:39,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:39,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:39,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:54:40,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:40,031 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:40,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1950897145, now seen corresponding path program 1 times [2024-11-17 07:54:40,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:40,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127434206] [2024-11-17 07:54:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:40,224 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 07:54:40,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127434206] [2024-11-17 07:54:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127434206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:54:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231250523] [2024-11-17 07:54:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:40,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:40,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:40,228 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 07:54:40,230 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 07:54:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:40,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:54:40,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:40,371 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 07:54:40,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:54:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231250523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:40,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:54:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 07:54:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761512961] [2024-11-17 07:54:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:40,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:54:40,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:54:40,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 07:54:40,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:40,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:54:40,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:42,121 INFO L124 PetriNetUnfolderBase]: 13827/21515 cut-off events. [2024-11-17 07:54:42,121 INFO L125 PetriNetUnfolderBase]: For 7786/8698 co-relation queries the response was YES. [2024-11-17 07:54:42,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46917 conditions, 21515 events. 13827/21515 cut-off events. For 7786/8698 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 143204 event pairs, 10758 based on Foata normal form. 1221/18184 useless extension candidates. Maximal degree in co-relation 46793. Up to 18130 conditions per place. [2024-11-17 07:54:42,236 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 87 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2024-11-17 07:54:42,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 116 transitions, 789 flow [2024-11-17 07:54:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-17 07:54:42,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-11-17 07:54:42,237 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 627 flow. Second operand 3 states and 148 transitions. [2024-11-17 07:54:42,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 116 transitions, 789 flow [2024-11-17 07:54:42,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 596 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-11-17 07:54:42,245 INFO L231 Difference]: Finished difference. Result has 85 places, 116 transitions, 422 flow [2024-11-17 07:54:42,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=85, PETRI_TRANSITIONS=116} [2024-11-17 07:54:42,246 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2024-11-17 07:54:42,246 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 116 transitions, 422 flow [2024-11-17 07:54:42,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 07:54:42,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:42,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:42,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:54:42,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:42,447 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:42,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -152485080, now seen corresponding path program 1 times [2024-11-17 07:54:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073792313] [2024-11-17 07:54:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:54:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073792313] [2024-11-17 07:54:42,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073792313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:42,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:42,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:54:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781873887] [2024-11-17 07:54:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:42,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:42,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:54:42,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 116 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:42,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:42,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:54:42,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:44,684 INFO L124 PetriNetUnfolderBase]: 18123/27273 cut-off events. [2024-11-17 07:54:44,684 INFO L125 PetriNetUnfolderBase]: For 10869/12687 co-relation queries the response was YES. [2024-11-17 07:54:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61188 conditions, 27273 events. 18123/27273 cut-off events. For 10869/12687 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 170916 event pairs, 6045 based on Foata normal form. 566/22740 useless extension candidates. Maximal degree in co-relation 61168. Up to 17545 conditions per place. [2024-11-17 07:54:44,829 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 112 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-17 07:54:44,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 142 transitions, 730 flow [2024-11-17 07:54:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-17 07:54:44,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-17 07:54:44,831 INFO L175 Difference]: Start difference. First operand has 85 places, 116 transitions, 422 flow. Second operand 3 states and 171 transitions. [2024-11-17 07:54:44,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 142 transitions, 730 flow [2024-11-17 07:54:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 142 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:44,838 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 437 flow [2024-11-17 07:54:44,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2024-11-17 07:54:44,839 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2024-11-17 07:54:44,839 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 437 flow [2024-11-17 07:54:44,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:44,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:44,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:44,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:54:44,839 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:44,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1397806897, now seen corresponding path program 1 times [2024-11-17 07:54:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573754861] [2024-11-17 07:54:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:54:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573754861] [2024-11-17 07:54:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573754861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:54:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888047778] [2024-11-17 07:54:44,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:44,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:54:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:54:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:54:44,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-17 07:54:44,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 07:54:44,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:44,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-17 07:54:44,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:47,680 INFO L124 PetriNetUnfolderBase]: 23696/36251 cut-off events. [2024-11-17 07:54:47,680 INFO L125 PetriNetUnfolderBase]: For 15633/17680 co-relation queries the response was YES. [2024-11-17 07:54:48,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82295 conditions, 36251 events. 23696/36251 cut-off events. For 15633/17680 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 241828 event pairs, 18637 based on Foata normal form. 320/29545 useless extension candidates. Maximal degree in co-relation 82273. Up to 24060 conditions per place. [2024-11-17 07:54:48,118 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 106 selfloop transitions, 17 changer transitions 0/148 dead transitions. [2024-11-17 07:54:48,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 780 flow [2024-11-17 07:54:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:54:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:54:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-11-17 07:54:48,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-11-17 07:54:48,121 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 437 flow. Second operand 5 states and 239 transitions. [2024-11-17 07:54:48,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 780 flow [2024-11-17 07:54:48,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:48,132 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 498 flow [2024-11-17 07:54:48,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-11-17 07:54:48,133 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2024-11-17 07:54:48,133 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 498 flow [2024-11-17 07:54:48,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 07:54:48,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:48,134 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:48,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:54:48,134 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:48,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash -822574196, now seen corresponding path program 1 times [2024-11-17 07:54:48,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:48,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319878684] [2024-11-17 07:54:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:48,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:54:48,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:48,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319878684] [2024-11-17 07:54:48,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319878684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:48,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:48,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:54:48,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145526420] [2024-11-17 07:54:48,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:48,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:48,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:48,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:48,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-17 07:54:48,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:48,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:48,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-17 07:54:48,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:51,298 INFO L124 PetriNetUnfolderBase]: 26994/38911 cut-off events. [2024-11-17 07:54:51,298 INFO L125 PetriNetUnfolderBase]: For 17791/19954 co-relation queries the response was YES. [2024-11-17 07:54:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91773 conditions, 38911 events. 26994/38911 cut-off events. For 17791/19954 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 225474 event pairs, 14081 based on Foata normal form. 452/33541 useless extension candidates. Maximal degree in co-relation 91748. Up to 24075 conditions per place. [2024-11-17 07:54:51,553 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 112 selfloop transitions, 4 changer transitions 2/140 dead transitions. [2024-11-17 07:54:51,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 798 flow [2024-11-17 07:54:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-17 07:54:51,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-11-17 07:54:51,554 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 498 flow. Second operand 3 states and 158 transitions. [2024-11-17 07:54:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 798 flow [2024-11-17 07:54:51,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 779 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:54:51,564 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 492 flow [2024-11-17 07:54:51,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-11-17 07:54:51,565 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-17 07:54:51,565 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 492 flow [2024-11-17 07:54:51,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:51,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:51,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:51,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:54:51,566 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:51,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1154819965, now seen corresponding path program 1 times [2024-11-17 07:54:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011783195] [2024-11-17 07:54:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:54:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011783195] [2024-11-17 07:54:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011783195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:54:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825580112] [2024-11-17 07:54:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:51,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:51,759 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 07:54:51,760 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 07:54:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:51,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:54:51,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 07:54:51,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:54:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825580112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:54:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-17 07:54:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501681666] [2024-11-17 07:54:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:51,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:54:51,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:54:51,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 07:54:51,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:51,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:54:51,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:53,707 INFO L124 PetriNetUnfolderBase]: 16302/24786 cut-off events. [2024-11-17 07:54:53,707 INFO L125 PetriNetUnfolderBase]: For 17133/18926 co-relation queries the response was YES. [2024-11-17 07:54:53,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58736 conditions, 24786 events. 16302/24786 cut-off events. For 17133/18926 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 154877 event pairs, 12973 based on Foata normal form. 1360/21620 useless extension candidates. Maximal degree in co-relation 58711. Up to 21780 conditions per place. [2024-11-17 07:54:54,128 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 85 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-17 07:54:54,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 656 flow [2024-11-17 07:54:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-17 07:54:54,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-17 07:54:54,130 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 492 flow. Second operand 3 states and 144 transitions. [2024-11-17 07:54:54,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 656 flow [2024-11-17 07:54:54,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 634 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 07:54:54,140 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 464 flow [2024-11-17 07:54:54,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-11-17 07:54:54,141 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-11-17 07:54:54,141 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 464 flow [2024-11-17 07:54:54,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 07:54:54,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:54,142 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:54,154 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 07:54:54,342 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,SelfDestructingSolverStorable14 [2024-11-17 07:54:54,343 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:54,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1486418709, now seen corresponding path program 1 times [2024-11-17 07:54:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:54,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391686066] [2024-11-17 07:54:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 07:54:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391686066] [2024-11-17 07:54:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391686066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:54:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806403539] [2024-11-17 07:54:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:54,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:54,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-17 07:54:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:54:54,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-17 07:54:54,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:57,637 INFO L124 PetriNetUnfolderBase]: 25852/37695 cut-off events. [2024-11-17 07:54:57,637 INFO L125 PetriNetUnfolderBase]: For 20409/23197 co-relation queries the response was YES. [2024-11-17 07:54:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89781 conditions, 37695 events. 25852/37695 cut-off events. For 20409/23197 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 220837 event pairs, 16025 based on Foata normal form. 640/32514 useless extension candidates. Maximal degree in co-relation 89756. Up to 27166 conditions per place. [2024-11-17 07:54:57,877 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 110 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-17 07:54:57,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 754 flow [2024-11-17 07:54:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-17 07:54:57,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-17 07:54:57,879 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 464 flow. Second operand 3 states and 156 transitions. [2024-11-17 07:54:57,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 136 transitions, 754 flow [2024-11-17 07:54:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 753 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:54:57,888 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 489 flow [2024-11-17 07:54:57,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-11-17 07:54:57,889 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-17 07:54:57,889 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 489 flow [2024-11-17 07:54:57,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:54:57,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:57,889 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:57,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:54:57,889 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:54:57,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1038266211, now seen corresponding path program 1 times [2024-11-17 07:54:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418732415] [2024-11-17 07:54:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 07:54:58,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:58,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418732415] [2024-11-17 07:54:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418732415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:58,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:58,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:54:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746965191] [2024-11-17 07:54:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:54:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:54:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:54:58,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-17 07:54:58,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 07:54:58,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:58,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-17 07:54:58,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:01,746 INFO L124 PetriNetUnfolderBase]: 27360/42201 cut-off events. [2024-11-17 07:55:01,746 INFO L125 PetriNetUnfolderBase]: For 25779/28677 co-relation queries the response was YES. [2024-11-17 07:55:01,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99487 conditions, 42201 events. 27360/42201 cut-off events. For 25779/28677 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 276142 event pairs, 22206 based on Foata normal form. 120/34686 useless extension candidates. Maximal degree in co-relation 99461. Up to 27883 conditions per place. [2024-11-17 07:55:02,003 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 81 selfloop transitions, 7 changer transitions 48/163 dead transitions. [2024-11-17 07:55:02,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 938 flow [2024-11-17 07:55:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:55:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:55:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-17 07:55:02,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-11-17 07:55:02,004 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 489 flow. Second operand 5 states and 234 transitions. [2024-11-17 07:55:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 938 flow [2024-11-17 07:55:02,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 163 transitions, 924 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:55:02,020 INFO L231 Difference]: Finished difference. Result has 98 places, 115 transitions, 508 flow [2024-11-17 07:55:02,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=98, PETRI_TRANSITIONS=115} [2024-11-17 07:55:02,020 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2024-11-17 07:55:02,021 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 115 transitions, 508 flow [2024-11-17 07:55:02,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 07:55:02,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:02,021 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:02,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 07:55:02,021 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-17 07:55:02,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1658206775, now seen corresponding path program 1 times [2024-11-17 07:55:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568447421] [2024-11-17 07:55:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 07:55:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568447421] [2024-11-17 07:55:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568447421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740581537] [2024-11-17 07:55:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:02,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:02,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:02,268 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 07:55:02,270 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 07:55:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:02,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:02,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 07:55:02,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:02,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740581537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:02,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:02,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-11-17 07:55:02,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534286000] [2024-11-17 07:55:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:02,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:55:02,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-17 07:55:02,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 07:55:02,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:02,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-17 07:55:02,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand