./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:05:17,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:17,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:17,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:17,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:17,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:17,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:17,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:17,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:17,930 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:17,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:17,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:17,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:17,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:17,932 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:17,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:17,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:17,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:17,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:17,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:17,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:17,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:17,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:17,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:17,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:17,939 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:17,939 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:17,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:17,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:17,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:17,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:17,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:17,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:17,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:17,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:17,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:17,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:17,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:17,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:17,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:17,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:17,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:17,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:17,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:17,946 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-10-12 00:05:18,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:18,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:18,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:18,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:18,277 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:18,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-12 00:05:19,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:20,086 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:20,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-12 00:05:20,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1b3301ef6/ab3f0bec1780466cb98c677cdb767827/FLAGd6e79498e [2024-10-12 00:05:20,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1b3301ef6/ab3f0bec1780466cb98c677cdb767827 [2024-10-12 00:05:20,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:20,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:20,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:20,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:20,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:20,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb8c485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20, skipping insertion in model container [2024-10-12 00:05:20,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:20,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:20,721 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:20,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:20,770 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:20,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20 WrapperNode [2024-10-12 00:05:20,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:20,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:20,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:20,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:20,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,833 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 346 [2024-10-12 00:05:20,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:20,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:20,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:20,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:20,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,876 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 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]. [2024-10-12 00:05:20,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:20,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:20,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:20,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:20,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (1/1) ... [2024-10-12 00:05:20,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:20,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:05:20,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:05:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:05:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:05:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:05:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:05:20,996 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:05:21,108 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:21,110 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:21,692 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:21,692 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:22,152 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:22,152 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:05:22,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:22 BoogieIcfgContainer [2024-10-12 00:05:22,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:22,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:22,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:22,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:22,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:20" (1/3) ... [2024-10-12 00:05:22,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610792d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:22, skipping insertion in model container [2024-10-12 00:05:22,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:20" (2/3) ... [2024-10-12 00:05:22,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610792d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:22, skipping insertion in model container [2024-10-12 00:05:22,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:22" (3/3) ... [2024-10-12 00:05:22,166 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-10-12 00:05:22,186 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:22,187 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-12 00:05:22,187 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:22,297 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:05:22,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 199 flow [2024-10-12 00:05:22,387 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2024-10-12 00:05:22,389 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:05:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 8/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-10-12 00:05:22,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 199 flow [2024-10-12 00:05:22,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 183 flow [2024-10-12 00:05:22,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:22,472 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;@75cff5e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:22,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-12 00:05:22,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:22,477 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:05:22,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:22,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:22,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:05:22,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:22,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1029222, now seen corresponding path program 1 times [2024-10-12 00:05:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588279253] [2024-10-12 00:05:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588279253] [2024-10-12 00:05:22,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588279253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:22,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:22,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:22,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144455837] [2024-10-12 00:05:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:22,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:22,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-12 00:05:22,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-12 00:05:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-12 00:05:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:24,405 INFO L124 PetriNetUnfolderBase]: 6026/10035 cut-off events. [2024-10-12 00:05:24,405 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2024-10-12 00:05:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18661 conditions, 10035 events. 6026/10035 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72899 event pairs, 5468 based on Foata normal form. 486/7021 useless extension candidates. Maximal degree in co-relation 17888. Up to 8260 conditions per place. [2024-10-12 00:05:24,514 INFO L140 encePairwiseOnDemand]: 64/89 looper letters, 52 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-12 00:05:24,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 307 flow [2024-10-12 00:05:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-12 00:05:24,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49719101123595505 [2024-10-12 00:05:24,531 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 183 flow. Second operand 4 states and 177 transitions. [2024-10-12 00:05:24,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 307 flow [2024-10-12 00:05:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:24,548 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 244 flow [2024-10-12 00:05:24,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-10-12 00:05:24,554 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2024-10-12 00:05:24,555 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 244 flow [2024-10-12 00:05:24,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-12 00:05:24,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:24,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:05:24,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:24,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:24,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash 597844387, now seen corresponding path program 1 times [2024-10-12 00:05:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:24,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337655401] [2024-10-12 00:05:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337655401] [2024-10-12 00:05:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337655401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491368259] [2024-10-12 00:05:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:24,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:24,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:24,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:24,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:05:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:24,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:24,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:25,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491368259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:25,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:05:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797334662] [2024-10-12 00:05:25,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:25,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:05:25,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-12 00:05:25,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-12 00:05:25,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:25,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-12 00:05:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:26,367 INFO L124 PetriNetUnfolderBase]: 6026/10032 cut-off events. [2024-10-12 00:05:26,367 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-12 00:05:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 10032 events. 6026/10032 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72956 event pairs, 5468 based on Foata normal form. 3/6540 useless extension candidates. Maximal degree in co-relation 18492. Up to 8245 conditions per place. [2024-10-12 00:05:26,462 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 42 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-10-12 00:05:26,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 350 flow [2024-10-12 00:05:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-10-12 00:05:26,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2024-10-12 00:05:26,466 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 244 flow. Second operand 6 states and 212 transitions. [2024-10-12 00:05:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 350 flow [2024-10-12 00:05:26,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:05:26,469 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 266 flow [2024-10-12 00:05:26,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-10-12 00:05:26,471 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-12 00:05:26,471 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 266 flow [2024-10-12 00:05:26,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-12 00:05:26,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:26,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:05:26,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:05:26,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:26,673 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:26,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1353307884, now seen corresponding path program 1 times [2024-10-12 00:05:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722527419] [2024-10-12 00:05:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:26,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722527419] [2024-10-12 00:05:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722527419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136156222] [2024-10-12 00:05:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:26,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:26,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:26,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:05:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:26,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:26,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:26,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136156222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:26,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:05:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123441229] [2024-10-12 00:05:27,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:05:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:05:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:05:27,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-12 00:05:27,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 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) [2024-10-12 00:05:27,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:27,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-12 00:05:27,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:28,294 INFO L124 PetriNetUnfolderBase]: 6035/10068 cut-off events. [2024-10-12 00:05:28,295 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-12 00:05:28,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18706 conditions, 10068 events. 6035/10068 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 73360 event pairs, 5468 based on Foata normal form. 9/6582 useless extension candidates. Maximal degree in co-relation 18494. Up to 8260 conditions per place. [2024-10-12 00:05:28,382 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 49 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-10-12 00:05:28,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 612 flow [2024-10-12 00:05:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:05:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:05:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2024-10-12 00:05:28,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38764044943820225 [2024-10-12 00:05:28,386 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 266 flow. Second operand 10 states and 345 transitions. [2024-10-12 00:05:28,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 612 flow [2024-10-12 00:05:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 529 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:28,394 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 481 flow [2024-10-12 00:05:28,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-10-12 00:05:28,395 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-10-12 00:05:28,396 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 481 flow [2024-10-12 00:05:28,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 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) [2024-10-12 00:05:28,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:28,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:28,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:28,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:28,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2028927118, now seen corresponding path program 1 times [2024-10-12 00:05:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318907614] [2024-10-12 00:05:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318907614] [2024-10-12 00:05:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318907614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731294414] [2024-10-12 00:05:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:28,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:28,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:28,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-10-12 00:05:28,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:28,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:28,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,328 INFO L124 PetriNetUnfolderBase]: 6263/10525 cut-off events. [2024-10-12 00:05:30,329 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-12 00:05:30,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 10525 events. 6263/10525 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 76615 event pairs, 5675 based on Foata normal form. 154/7214 useless extension candidates. Maximal degree in co-relation 19497. Up to 8286 conditions per place. [2024-10-12 00:05:30,404 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 120 selfloop transitions, 10 changer transitions 1/156 dead transitions. [2024-10-12 00:05:30,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 995 flow [2024-10-12 00:05:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-10-12 00:05:30,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5415730337078651 [2024-10-12 00:05:30,406 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 481 flow. Second operand 5 states and 241 transitions. [2024-10-12 00:05:30,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 995 flow [2024-10-12 00:05:30,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 935 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:30,412 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 548 flow [2024-10-12 00:05:30,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-10-12 00:05:30,417 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-12 00:05:30,417 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 548 flow [2024-10-12 00:05:30,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-10-12 00:05:30,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:30,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:05:30,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:30,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1595410801, now seen corresponding path program 1 times [2024-10-12 00:05:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343739807] [2024-10-12 00:05:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:30,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343739807] [2024-10-12 00:05:30,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343739807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:30,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212159466] [2024-10-12 00:05:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:30,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:30,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:30,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:05:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:30,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:30,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212159466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-12 00:05:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623416291] [2024-10-12 00:05:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:05:30,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:30,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:30,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:31,451 INFO L124 PetriNetUnfolderBase]: 4698/8093 cut-off events. [2024-10-12 00:05:31,451 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-10-12 00:05:31,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15626 conditions, 8093 events. 4698/8093 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57286 event pairs, 4210 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 15470. Up to 6524 conditions per place. [2024-10-12 00:05:31,522 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 86 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-10-12 00:05:31,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 710 flow [2024-10-12 00:05:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-10-12 00:05:31,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243445692883895 [2024-10-12 00:05:31,525 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 548 flow. Second operand 3 states and 140 transitions. [2024-10-12 00:05:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 710 flow [2024-10-12 00:05:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 706 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:31,533 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 534 flow [2024-10-12 00:05:31,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-10-12 00:05:31,535 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-12 00:05:31,536 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 534 flow [2024-10-12 00:05:31,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:31,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:31,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:31,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:05:31,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:31,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:31,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1529118875, now seen corresponding path program 1 times [2024-10-12 00:05:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:31,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013737521] [2024-10-12 00:05:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:31,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013737521] [2024-10-12 00:05:31,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013737521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:31,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:31,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:31,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649175759] [2024-10-12 00:05:31,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:31,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:31,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:31,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:31,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-12 00:05:31,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:31,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:32,550 INFO L124 PetriNetUnfolderBase]: 4250/6981 cut-off events. [2024-10-12 00:05:32,551 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-10-12 00:05:32,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14189 conditions, 6981 events. 4250/6981 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44499 event pairs, 1558 based on Foata normal form. 105/5122 useless extension candidates. Maximal degree in co-relation 14173. Up to 4941 conditions per place. [2024-10-12 00:05:32,591 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 103 selfloop transitions, 2 changer transitions 1/131 dead transitions. [2024-10-12 00:05:32,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 793 flow [2024-10-12 00:05:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-10-12 00:05:32,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5917602996254682 [2024-10-12 00:05:32,595 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 534 flow. Second operand 3 states and 158 transitions. [2024-10-12 00:05:32,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 793 flow [2024-10-12 00:05:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:32,604 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 538 flow [2024-10-12 00:05:32,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-10-12 00:05:32,605 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-12 00:05:32,606 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 538 flow [2024-10-12 00:05:32,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-12 00:05:32,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:32,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:32,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:05:32,607 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:32,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2081871629, now seen corresponding path program 1 times [2024-10-12 00:05:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678045404] [2024-10-12 00:05:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678045404] [2024-10-12 00:05:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678045404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:32,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123920607] [2024-10-12 00:05:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:32,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:32,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:32,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:32,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-10-12 00:05:32,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:32,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:32,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:33,430 INFO L124 PetriNetUnfolderBase]: 4766/8152 cut-off events. [2024-10-12 00:05:33,430 INFO L125 PetriNetUnfolderBase]: For 1495/1525 co-relation queries the response was YES. [2024-10-12 00:05:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 8152 events. 4766/8152 cut-off events. For 1495/1525 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54932 event pairs, 2202 based on Foata normal form. 150/6222 useless extension candidates. Maximal degree in co-relation 17024. Up to 3805 conditions per place. [2024-10-12 00:05:33,484 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-12 00:05:33,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 810 flow [2024-10-12 00:05:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-10-12 00:05:33,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599250936329588 [2024-10-12 00:05:33,487 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 538 flow. Second operand 3 states and 160 transitions. [2024-10-12 00:05:33,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 810 flow [2024-10-12 00:05:33,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:33,495 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 550 flow [2024-10-12 00:05:33,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-10-12 00:05:33,497 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2024-10-12 00:05:33,499 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 550 flow [2024-10-12 00:05:33,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-10-12 00:05:33,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:33,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:33,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:05:33,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:33,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash -974348692, now seen corresponding path program 1 times [2024-10-12 00:05:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139258001] [2024-10-12 00:05:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:33,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139258001] [2024-10-12 00:05:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139258001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:33,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:33,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364890650] [2024-10-12 00:05:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:33,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:33,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:33,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 550 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) [2024-10-12 00:05:33,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:33,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:33,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:34,316 INFO L124 PetriNetUnfolderBase]: 3369/6219 cut-off events. [2024-10-12 00:05:34,316 INFO L125 PetriNetUnfolderBase]: For 1085/1088 co-relation queries the response was YES. [2024-10-12 00:05:34,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12986 conditions, 6219 events. 3369/6219 cut-off events. For 1085/1088 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43567 event pairs, 1984 based on Foata normal form. 15/4739 useless extension candidates. Maximal degree in co-relation 12966. Up to 4731 conditions per place. [2024-10-12 00:05:34,367 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 95 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-10-12 00:05:34,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 773 flow [2024-10-12 00:05:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-10-12 00:05:34,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543071161048689 [2024-10-12 00:05:34,369 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 550 flow. Second operand 3 states and 148 transitions. [2024-10-12 00:05:34,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 773 flow [2024-10-12 00:05:34,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 771 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:34,377 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 571 flow [2024-10-12 00:05:34,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2024-10-12 00:05:34,378 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2024-10-12 00:05:34,378 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 571 flow [2024-10-12 00:05:34,378 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) [2024-10-12 00:05:34,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:34,378 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:05:34,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:05:34,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:34,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1090455241, now seen corresponding path program 2 times [2024-10-12 00:05:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:34,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026255720] [2024-10-12 00:05:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:34,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026255720] [2024-10-12 00:05:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026255720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179822016] [2024-10-12 00:05:34,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:34,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:34,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:34,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:34,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:05:34,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:05:34,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:34,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:34,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:34,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:34,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179822016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:34,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:05:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801366206] [2024-10-12 00:05:34,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:34,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:05:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:05:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:05:34,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-12 00:05:34,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 571 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) [2024-10-12 00:05:34,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:34,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-12 00:05:34,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:35,932 INFO L124 PetriNetUnfolderBase]: 3374/6249 cut-off events. [2024-10-12 00:05:35,932 INFO L125 PetriNetUnfolderBase]: For 2005/2005 co-relation queries the response was YES. [2024-10-12 00:05:35,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13510 conditions, 6249 events. 3374/6249 cut-off events. For 2005/2005 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44090 event pairs, 2811 based on Foata normal form. 6/4754 useless extension candidates. Maximal degree in co-relation 13488. Up to 4936 conditions per place. [2024-10-12 00:05:35,984 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 46 selfloop transitions, 56 changer transitions 0/124 dead transitions. [2024-10-12 00:05:35,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 836 flow [2024-10-12 00:05:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:05:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:05:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 695 transitions. [2024-10-12 00:05:35,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325374531835206 [2024-10-12 00:05:35,988 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 571 flow. Second operand 24 states and 695 transitions. [2024-10-12 00:05:35,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 836 flow [2024-10-12 00:05:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 827 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:35,998 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 760 flow [2024-10-12 00:05:35,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=760, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-12 00:05:35,999 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 34 predicate places. [2024-10-12 00:05:36,000 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 760 flow [2024-10-12 00:05:36,000 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) [2024-10-12 00:05:36,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:36,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:36,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:05:36,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:05:36,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:36,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 682300369, now seen corresponding path program 1 times [2024-10-12 00:05:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:36,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60483882] [2024-10-12 00:05:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60483882] [2024-10-12 00:05:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60483882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993706782] [2024-10-12 00:05:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:36,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:36,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-12 00:05:36,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:36,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:36,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:37,166 INFO L124 PetriNetUnfolderBase]: 3568/6658 cut-off events. [2024-10-12 00:05:37,166 INFO L125 PetriNetUnfolderBase]: For 1542/1544 co-relation queries the response was YES. [2024-10-12 00:05:37,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 6658 events. 3568/6658 cut-off events. For 1542/1544 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46561 event pairs, 2996 based on Foata normal form. 40/5199 useless extension candidates. Maximal degree in co-relation 14156. Up to 4989 conditions per place. [2024-10-12 00:05:37,200 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 102 selfloop transitions, 11 changer transitions 21/158 dead transitions. [2024-10-12 00:05:37,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 158 transitions, 1243 flow [2024-10-12 00:05:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-12 00:05:37,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101123595505618 [2024-10-12 00:05:37,201 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 760 flow. Second operand 5 states and 227 transitions. [2024-10-12 00:05:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 158 transitions, 1243 flow [2024-10-12 00:05:37,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 158 transitions, 1088 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-12 00:05:37,211 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 695 flow [2024-10-12 00:05:37,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2024-10-12 00:05:37,213 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2024-10-12 00:05:37,214 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 695 flow [2024-10-12 00:05:37,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-12 00:05:37,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:37,214 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-12 00:05:37,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:05:37,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:37,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -309320881, now seen corresponding path program 1 times [2024-10-12 00:05:37,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943653656] [2024-10-12 00:05:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943653656] [2024-10-12 00:05:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943653656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534930113] [2024-10-12 00:05:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:37,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:37,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:37,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:37,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:05:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:37,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:05:37,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:37,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534930113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:37,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-12 00:05:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005707878] [2024-10-12 00:05:37,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:37,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:05:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:05:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-12 00:05:37,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-12 00:05:37,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 695 flow. Second operand has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 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) [2024-10-12 00:05:37,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:37,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-12 00:05:37,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:39,001 INFO L124 PetriNetUnfolderBase]: 3616/6845 cut-off events. [2024-10-12 00:05:39,001 INFO L125 PetriNetUnfolderBase]: For 2753/2753 co-relation queries the response was YES. [2024-10-12 00:05:39,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15530 conditions, 6845 events. 3616/6845 cut-off events. For 2753/2753 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48834 event pairs, 2996 based on Foata normal form. 42/5360 useless extension candidates. Maximal degree in co-relation 15505. Up to 5320 conditions per place. [2024-10-12 00:05:39,051 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 49 selfloop transitions, 125 changer transitions 0/196 dead transitions. [2024-10-12 00:05:39,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 196 transitions, 1610 flow [2024-10-12 00:05:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 00:05:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-12 00:05:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 818 transitions. [2024-10-12 00:05:39,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35350043215211757 [2024-10-12 00:05:39,055 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 695 flow. Second operand 26 states and 818 transitions. [2024-10-12 00:05:39,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 196 transitions, 1610 flow [2024-10-12 00:05:39,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 196 transitions, 1593 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:39,070 INFO L231 Difference]: Finished difference. Result has 147 places, 196 transitions, 1579 flow [2024-10-12 00:05:39,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1579, PETRI_PLACES=147, PETRI_TRANSITIONS=196} [2024-10-12 00:05:39,072 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 61 predicate places. [2024-10-12 00:05:39,072 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 196 transitions, 1579 flow [2024-10-12 00:05:39,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 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) [2024-10-12 00:05:39,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:39,074 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] [2024-10-12 00:05:39,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:05:39,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 00:05:39,275 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:39,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash -843405047, now seen corresponding path program 1 times [2024-10-12 00:05:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361737313] [2024-10-12 00:05:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361737313] [2024-10-12 00:05:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361737313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353364011] [2024-10-12 00:05:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:39,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:39,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:39,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:39,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:05:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:39,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:39,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:39,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:39,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353364011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:39,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:39,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-12 00:05:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929730217] [2024-10-12 00:05:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:39,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:05:39,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-12 00:05:39,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 196 transitions, 1579 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-12 00:05:39,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:39,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-12 00:05:39,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:40,149 INFO L124 PetriNetUnfolderBase]: 2822/5456 cut-off events. [2024-10-12 00:05:40,150 INFO L125 PetriNetUnfolderBase]: For 2695/2695 co-relation queries the response was YES. [2024-10-12 00:05:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12697 conditions, 5456 events. 2822/5456 cut-off events. For 2695/2695 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37645 event pairs, 2299 based on Foata normal form. 0/4520 useless extension candidates. Maximal degree in co-relation 12664. Up to 4363 conditions per place. [2024-10-12 00:05:40,193 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 169 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2024-10-12 00:05:40,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 194 transitions, 1911 flow [2024-10-12 00:05:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-12 00:05:40,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131086142322098 [2024-10-12 00:05:40,195 INFO L175 Difference]: Start difference. First operand has 147 places, 196 transitions, 1579 flow. Second operand 3 states and 137 transitions. [2024-10-12 00:05:40,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 194 transitions, 1911 flow [2024-10-12 00:05:40,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 194 transitions, 1521 flow, removed 92 selfloop flow, removed 13 redundant places. [2024-10-12 00:05:40,214 INFO L231 Difference]: Finished difference. Result has 134 places, 194 transitions, 1183 flow [2024-10-12 00:05:40,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=134, PETRI_TRANSITIONS=194} [2024-10-12 00:05:40,216 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 48 predicate places. [2024-10-12 00:05:40,216 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 194 transitions, 1183 flow [2024-10-12 00:05:40,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-12 00:05:40,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:40,216 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] [2024-10-12 00:05:40,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:05:40,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 00:05:40,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:40,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash -843405050, now seen corresponding path program 1 times [2024-10-12 00:05:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020202607] [2024-10-12 00:05:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:40,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:41,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020202607] [2024-10-12 00:05:41,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020202607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233437738] [2024-10-12 00:05:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:41,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:41,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:41,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:05:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:41,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:05:41,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:41,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:05:41,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:05:41,456 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:05:41,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:05:41,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-12 00:05:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:41,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233437738] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:05:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 19 [2024-10-12 00:05:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148436166] [2024-10-12 00:05:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:05:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:05:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:05:41,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-10-12 00:05:41,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 194 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-12 00:05:41,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:41,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-10-12 00:05:41,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:42,438 INFO L124 PetriNetUnfolderBase]: 3196/5835 cut-off events. [2024-10-12 00:05:42,439 INFO L125 PetriNetUnfolderBase]: For 1741/1741 co-relation queries the response was YES. [2024-10-12 00:05:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13252 conditions, 5835 events. 3196/5835 cut-off events. For 1741/1741 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 38171 event pairs, 1193 based on Foata normal form. 0/4917 useless extension candidates. Maximal degree in co-relation 13221. Up to 2852 conditions per place. [2024-10-12 00:05:42,486 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 188 selfloop transitions, 23 changer transitions 0/234 dead transitions. [2024-10-12 00:05:42,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 234 transitions, 1718 flow [2024-10-12 00:05:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-10-12 00:05:42,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5325842696629214 [2024-10-12 00:05:42,487 INFO L175 Difference]: Start difference. First operand has 134 places, 194 transitions, 1183 flow. Second operand 5 states and 237 transitions. [2024-10-12 00:05:42,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 234 transitions, 1718 flow [2024-10-12 00:05:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 234 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:42,498 INFO L231 Difference]: Finished difference. Result has 139 places, 198 transitions, 1280 flow [2024-10-12 00:05:42,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=139, PETRI_TRANSITIONS=198} [2024-10-12 00:05:42,499 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2024-10-12 00:05:42,500 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 198 transitions, 1280 flow [2024-10-12 00:05:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-12 00:05:42,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:42,500 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] [2024-10-12 00:05:42,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:05:42,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:42,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:05:42,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1929600171, now seen corresponding path program 1 times [2024-10-12 00:05:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:42,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461634927] [2024-10-12 00:05:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461634927] [2024-10-12 00:05:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461634927] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500068850] [2024-10-12 00:05:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:43,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:43,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:43,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:05:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:43,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 00:05:43,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:43,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:05:43,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:05:43,497 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:05:43,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:05:43,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-12 00:05:43,687 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:05:43,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-12 00:05:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:43,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:44,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:05:44,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-12 00:05:44,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:05:44,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-10-12 00:05:44,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-10-12 00:05:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500068850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:44,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:44,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-10-12 00:05:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932272168] [2024-10-12 00:05:44,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:44,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:05:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:05:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=364, Unknown=4, NotChecked=0, Total=420 [2024-10-12 00:05:44,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-12 00:05:44,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 198 transitions, 1280 flow. Second operand has 21 states, 21 states have (on average 19.571428571428573) internal successors, (411), 21 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:44,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:44,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-12 00:05:44,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:49,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-12 00:05:53,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-12 00:05:57,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-12 00:06:01,730 INFO L124 PetriNetUnfolderBase]: 13731/24170 cut-off events. [2024-10-12 00:06:01,730 INFO L125 PetriNetUnfolderBase]: For 14287/14287 co-relation queries the response was YES. [2024-10-12 00:06:01,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55084 conditions, 24170 events. 13731/24170 cut-off events. For 14287/14287 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 192015 event pairs, 4942 based on Foata normal form. 815/20073 useless extension candidates. Maximal degree in co-relation 55050. Up to 3896 conditions per place. [2024-10-12 00:06:01,890 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 342 selfloop transitions, 292 changer transitions 24/672 dead transitions. [2024-10-12 00:06:01,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 672 transitions, 5147 flow [2024-10-12 00:06:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-12 00:06:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-12 00:06:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 968 transitions. [2024-10-12 00:06:01,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3021223470661673 [2024-10-12 00:06:01,894 INFO L175 Difference]: Start difference. First operand has 139 places, 198 transitions, 1280 flow. Second operand 36 states and 968 transitions. [2024-10-12 00:06:01,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 672 transitions, 5147 flow [2024-10-12 00:06:01,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 672 transitions, 5134 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:01,926 INFO L231 Difference]: Finished difference. Result has 188 places, 387 transitions, 3603 flow [2024-10-12 00:06:01,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3603, PETRI_PLACES=188, PETRI_TRANSITIONS=387} [2024-10-12 00:06:01,927 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 102 predicate places. [2024-10-12 00:06:01,927 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 387 transitions, 3603 flow [2024-10-12 00:06:01,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.571428571428573) internal successors, (411), 21 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:01,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:01,928 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] [2024-10-12 00:06:01,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:06:02,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 00:06:02,134 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:06:02,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 53345494, now seen corresponding path program 1 times [2024-10-12 00:06:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433110806] [2024-10-12 00:06:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433110806] [2024-10-12 00:06:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433110806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288088185] [2024-10-12 00:06:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:02,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:02,557 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:02,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:06:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:02,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:06:02,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:02,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:06:02,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:06:02,804 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:06:02,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:06:02,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-12 00:06:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:02,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:06:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288088185] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:03,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:06:03,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-10-12 00:06:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818941708] [2024-10-12 00:06:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:03,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:06:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:03,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:06:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:06:03,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-10-12 00:06:03,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 387 transitions, 3603 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-12 00:06:03,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:03,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-10-12 00:06:03,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:05,501 INFO L124 PetriNetUnfolderBase]: 8467/15403 cut-off events. [2024-10-12 00:06:05,501 INFO L125 PetriNetUnfolderBase]: For 15602/15606 co-relation queries the response was YES. [2024-10-12 00:06:05,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41331 conditions, 15403 events. 8467/15403 cut-off events. For 15602/15606 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 118210 event pairs, 3004 based on Foata normal form. 44/13355 useless extension candidates. Maximal degree in co-relation 41281. Up to 8285 conditions per place. [2024-10-12 00:06:05,864 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 368 selfloop transitions, 34 changer transitions 0/427 dead transitions. [2024-10-12 00:06:05,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 427 transitions, 4535 flow [2024-10-12 00:06:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:06:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:06:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-10-12 00:06:05,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370786516853933 [2024-10-12 00:06:05,866 INFO L175 Difference]: Start difference. First operand has 188 places, 387 transitions, 3603 flow. Second operand 5 states and 239 transitions. [2024-10-12 00:06:05,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 427 transitions, 4535 flow [2024-10-12 00:06:05,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 427 transitions, 4386 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-10-12 00:06:05,928 INFO L231 Difference]: Finished difference. Result has 186 places, 387 transitions, 3577 flow [2024-10-12 00:06:05,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3577, PETRI_PLACES=186, PETRI_TRANSITIONS=387} [2024-10-12 00:06:05,929 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 100 predicate places. [2024-10-12 00:06:05,929 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 387 transitions, 3577 flow [2024-10-12 00:06:05,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-12 00:06:05,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:05,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:05,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:06,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:06,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:06:06,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1998090482, now seen corresponding path program 1 times [2024-10-12 00:06:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359758953] [2024-10-12 00:06:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:06:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359758953] [2024-10-12 00:06:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359758953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:06,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:06,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752684162] [2024-10-12 00:06:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:06,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:06,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 89 [2024-10-12 00:06:06,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 387 transitions, 3577 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-10-12 00:06:06,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:06,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 89 [2024-10-12 00:06:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:09,847 INFO L124 PetriNetUnfolderBase]: 13735/23358 cut-off events. [2024-10-12 00:06:09,847 INFO L125 PetriNetUnfolderBase]: For 26396/26396 co-relation queries the response was YES. [2024-10-12 00:06:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61935 conditions, 23358 events. 13735/23358 cut-off events. For 26396/26396 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 178410 event pairs, 5069 based on Foata normal form. 620/20023 useless extension candidates. Maximal degree in co-relation 61882. Up to 15809 conditions per place. [2024-10-12 00:06:10,117 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 393 selfloop transitions, 8 changer transitions 0/424 dead transitions. [2024-10-12 00:06:10,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 424 transitions, 4527 flow [2024-10-12 00:06:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-12 00:06:10,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421348314606742 [2024-10-12 00:06:10,119 INFO L175 Difference]: Start difference. First operand has 186 places, 387 transitions, 3577 flow. Second operand 4 states and 193 transitions. [2024-10-12 00:06:10,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 424 transitions, 4527 flow [2024-10-12 00:06:10,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 424 transitions, 4491 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:10,226 INFO L231 Difference]: Finished difference. Result has 189 places, 388 transitions, 3574 flow [2024-10-12 00:06:10,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3545, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3574, PETRI_PLACES=189, PETRI_TRANSITIONS=388} [2024-10-12 00:06:10,226 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 103 predicate places. [2024-10-12 00:06:10,227 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 388 transitions, 3574 flow [2024-10-12 00:06:10,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-10-12 00:06:10,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:10,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:10,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 00:06:10,227 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:06:10,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1236604459, now seen corresponding path program 1 times [2024-10-12 00:06:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003015787] [2024-10-12 00:06:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:10,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003015787] [2024-10-12 00:06:10,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003015787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:10,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893467273] [2024-10-12 00:06:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:10,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:10,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:10,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:06:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:10,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 00:06:10,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:10,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:06:10,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:06:10,996 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:06:10,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:06:11,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-12 00:06:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:11,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:12,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:12,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-10-12 00:06:12,134 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:06:12,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 49 [2024-10-12 00:06:12,152 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-12 00:06:12,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-10-12 00:06:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:12,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893467273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:12,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:12,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-10-12 00:06:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845779449] [2024-10-12 00:06:12,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:12,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:06:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:06:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=626, Unknown=7, NotChecked=0, Total=756 [2024-10-12 00:06:12,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-12 00:06:12,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 388 transitions, 3574 flow. Second operand has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 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) [2024-10-12 00:06:12,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:12,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-12 00:06:12,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:20,302 INFO L124 PetriNetUnfolderBase]: 23350/40849 cut-off events. [2024-10-12 00:06:20,302 INFO L125 PetriNetUnfolderBase]: For 56879/56915 co-relation queries the response was YES. [2024-10-12 00:06:20,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104198 conditions, 40849 events. 23350/40849 cut-off events. For 56879/56915 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 344686 event pairs, 8077 based on Foata normal form. 1091/36269 useless extension candidates. Maximal degree in co-relation 104144. Up to 14290 conditions per place. [2024-10-12 00:06:20,993 INFO L140 encePairwiseOnDemand]: 71/89 looper letters, 462 selfloop transitions, 238 changer transitions 2/716 dead transitions. [2024-10-12 00:06:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 716 transitions, 6341 flow [2024-10-12 00:06:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 00:06:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-12 00:06:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 959 transitions. [2024-10-12 00:06:20,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3265236636023153 [2024-10-12 00:06:20,996 INFO L175 Difference]: Start difference. First operand has 189 places, 388 transitions, 3574 flow. Second operand 33 states and 959 transitions. [2024-10-12 00:06:20,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 716 transitions, 6341 flow [2024-10-12 00:06:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 716 transitions, 6310 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:21,139 INFO L231 Difference]: Finished difference. Result has 231 places, 439 transitions, 4667 flow [2024-10-12 00:06:21,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4667, PETRI_PLACES=231, PETRI_TRANSITIONS=439} [2024-10-12 00:06:21,140 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 145 predicate places. [2024-10-12 00:06:21,140 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 439 transitions, 4667 flow [2024-10-12 00:06:21,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 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) [2024-10-12 00:06:21,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:21,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:21,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:21,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:06:21,342 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:06:21,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1811263915, now seen corresponding path program 2 times [2024-10-12 00:06:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:21,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717103809] [2024-10-12 00:06:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:21,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717103809] [2024-10-12 00:06:22,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717103809] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559987910] [2024-10-12 00:06:22,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:22,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:22,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:22,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:06:22,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:06:22,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:22,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:06:22,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:06:22,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:22,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559987910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:22,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:22,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-10-12 00:06:22,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870562195] [2024-10-12 00:06:22,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:22,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:22,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:22,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:06:22,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2024-10-12 00:06:22,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 439 transitions, 4667 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-10-12 00:06:22,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:22,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2024-10-12 00:06:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:27,024 INFO L124 PetriNetUnfolderBase]: 14600/26436 cut-off events. [2024-10-12 00:06:27,024 INFO L125 PetriNetUnfolderBase]: For 112141/112226 co-relation queries the response was YES. [2024-10-12 00:06:27,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85652 conditions, 26436 events. 14600/26436 cut-off events. For 112141/112226 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 218706 event pairs, 7507 based on Foata normal form. 489/23501 useless extension candidates. Maximal degree in co-relation 85586. Up to 19183 conditions per place. [2024-10-12 00:06:27,534 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 439 selfloop transitions, 20 changer transitions 0/487 dead transitions. [2024-10-12 00:06:27,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 487 transitions, 5813 flow [2024-10-12 00:06:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-10-12 00:06:27,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49625468164794007 [2024-10-12 00:06:27,536 INFO L175 Difference]: Start difference. First operand has 231 places, 439 transitions, 4667 flow. Second operand 6 states and 265 transitions. [2024-10-12 00:06:27,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 487 transitions, 5813 flow [2024-10-12 00:06:28,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 487 transitions, 5467 flow, removed 35 selfloop flow, removed 15 redundant places. [2024-10-12 00:06:28,100 INFO L231 Difference]: Finished difference. Result has 223 places, 445 transitions, 4454 flow [2024-10-12 00:06:28,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4454, PETRI_PLACES=223, PETRI_TRANSITIONS=445} [2024-10-12 00:06:28,101 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 137 predicate places. [2024-10-12 00:06:28,101 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 445 transitions, 4454 flow [2024-10-12 00:06:28,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-10-12 00:06:28,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:28,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:28,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:28,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:06:28,304 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-12 00:06:28,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -274549253, now seen corresponding path program 1 times [2024-10-12 00:06:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813892387] [2024-10-12 00:06:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:28,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:28,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813892387] [2024-10-12 00:06:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813892387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:28,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754475985] [2024-10-12 00:06:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:28,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:28,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:06:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:28,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 00:06:28,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:28,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:06:28,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:06:29,106 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:06:29,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:06:29,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-12 00:06:29,432 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:06:29,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-12 00:06:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:29,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:29,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:29,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-12 00:06:29,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:29,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-10-12 00:06:29,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-10-12 00:06:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754475985] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:30,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2024-10-12 00:06:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683615223] [2024-10-12 00:06:30,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:30,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 00:06:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 00:06:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=486, Unknown=4, NotChecked=0, Total=552 [2024-10-12 00:06:30,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-12 00:06:30,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 445 transitions, 4454 flow. Second operand has 24 states, 24 states have (on average 19.625) internal successors, (471), 24 states have internal predecessors, (471), 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) [2024-10-12 00:06:30,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:30,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-12 00:06:30,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:35,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]