./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-more-queue-add-3-nl.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-more-queue-add-3-nl.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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:07:41,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:07:41,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:07:41,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:07:41,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:07:41,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:07:41,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:07:41,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:07:41,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:07:41,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:07:41,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:07:41,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:07:41,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:07:41,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:07:41,433 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:07:41,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:07:41,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:07:41,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:07:41,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:07:41,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:07:41,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:07:41,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:07:41,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:07:41,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:07:41,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:07:41,439 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:07:41,439 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:07:41,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:07:41,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:07:41,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:07:41,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:07:41,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:07:41,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:07:41,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:07:41,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:07:41,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:07:41,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:07:41,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:07:41,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:07:41,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:07:41,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:07:41,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:07:41,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:07:41,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:07:41,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-10-12 00:07:41,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:07:41,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:07:41,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:07:41,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:07:41,778 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:07:41,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-12 00:07:43,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:07:43,522 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:07:43,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-12 00:07:43,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bde791cb5/6b24e6af95714f1baa41de8097928c37/FLAG4a9777a7e [2024-10-12 00:07:43,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bde791cb5/6b24e6af95714f1baa41de8097928c37 [2024-10-12 00:07:43,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:07:43,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:07:43,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:07:43,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:07:43,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:07:43,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a736845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43, skipping insertion in model container [2024-10-12 00:07:43,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:07:43,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:07:43,822 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:07:43,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:07:43,866 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:07:43,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43 WrapperNode [2024-10-12 00:07:43,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:07:43,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:07:43,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:07:43,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:07:43,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,912 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 274 [2024-10-12 00:07:43,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:07:43,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:07:43,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:07:43,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:07:43,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,962 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-12 00:07:43,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:43,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:07:43,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:07:43,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:07:44,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:07:44,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (1/1) ... [2024-10-12 00:07:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:07:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:44,036 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 00:07:44,040 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 00:07:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:07:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:07:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:07:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:07:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:07:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:07:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:07:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:07:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:07:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:07:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:07:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:07:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:07:44,094 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 00:07:44,198 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:07:44,201 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:07:44,674 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:07:44,678 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:07:45,092 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:07:45,092 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-12 00:07:45,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:07:45 BoogieIcfgContainer [2024-10-12 00:07:45,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:07:45,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:07:45,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:07:45,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:07:45,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:07:43" (1/3) ... [2024-10-12 00:07:45,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37340fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:07:45, skipping insertion in model container [2024-10-12 00:07:45,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:07:43" (2/3) ... [2024-10-12 00:07:45,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37340fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:07:45, skipping insertion in model container [2024-10-12 00:07:45,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:07:45" (3/3) ... [2024-10-12 00:07:45,104 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-10-12 00:07:45,120 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:07:45,121 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-12 00:07:45,121 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:07:45,184 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:07:45,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2024-10-12 00:07:45,266 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2024-10-12 00:07:45,266 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:07:45,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-12 00:07:45,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2024-10-12 00:07:45,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2024-10-12 00:07:45,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:07:45,302 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;@3fa50686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:07:45,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-12 00:07:45,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:07:45,307 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:07:45,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:07:45,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:45,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:07:45,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:45,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 807773, now seen corresponding path program 1 times [2024-10-12 00:07:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634450858] [2024-10-12 00:07:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:45,655 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 00:07:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634450858] [2024-10-12 00:07:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634450858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745748009] [2024-10-12 00:07:45,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:45,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:07:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:07:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:07:45,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:45,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 00:07:45,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:45,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:45,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:46,478 INFO L124 PetriNetUnfolderBase]: 2450/4269 cut-off events. [2024-10-12 00:07:46,478 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-10-12 00:07:46,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 4269 events. 2450/4269 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28756 event pairs, 2170 based on Foata normal form. 287/3395 useless extension candidates. Maximal degree in co-relation 7490. Up to 3377 conditions per place. [2024-10-12 00:07:46,533 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 39 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-12 00:07:46,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 235 flow [2024-10-12 00:07:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-12 00:07:46,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-12 00:07:46,550 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 141 transitions. [2024-10-12 00:07:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 235 flow [2024-10-12 00:07:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:07:46,568 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2024-10-12 00:07:46,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-12 00:07:46,576 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-10-12 00:07:46,579 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2024-10-12 00:07:46,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 00:07:46,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:46,580 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:07:46,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:07:46,581 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:46,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1704600769, now seen corresponding path program 1 times [2024-10-12 00:07:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808781496] [2024-10-12 00:07:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:46,749 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 00:07:46,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808781496] [2024-10-12 00:07:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808781496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506770888] [2024-10-12 00:07:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:46,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:46,762 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 00:07:46,775 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 00:07:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:46,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:07:46,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:46,913 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 00:07:46,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:07:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506770888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:07:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:07:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316959029] [2024-10-12 00:07:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:46,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:07:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:07:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:07:46,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:46,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 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 00:07:46,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:46,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:46,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:47,485 INFO L124 PetriNetUnfolderBase]: 2450/4267 cut-off events. [2024-10-12 00:07:47,487 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-12 00:07:47,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 4267 events. 2450/4267 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28746 event pairs, 2170 based on Foata normal form. 2/3111 useless extension candidates. Maximal degree in co-relation 7777. Up to 3367 conditions per place. [2024-10-12 00:07:47,523 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 32 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-10-12 00:07:47,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 262 flow [2024-10-12 00:07:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:07:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:07:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-10-12 00:07:47,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-10-12 00:07:47,526 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 172 transitions. [2024-10-12 00:07:47,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 262 flow [2024-10-12 00:07:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:07:47,531 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2024-10-12 00:07:47,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-12 00:07:47,533 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-10-12 00:07:47,533 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2024-10-12 00:07:47,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 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 00:07:47,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:47,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:07:47,554 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 00:07:47,738 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 00:07:47,740 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:47,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1303015442, now seen corresponding path program 1 times [2024-10-12 00:07:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577604043] [2024-10-12 00:07:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:47,871 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 00:07:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:47,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577604043] [2024-10-12 00:07:47,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577604043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:47,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641932713] [2024-10-12 00:07:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:47,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:47,876 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 00:07:47,877 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 00:07:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:47,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:07:47,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:47,990 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 00:07:47,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:48,035 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 00:07:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641932713] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:48,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:48,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:07:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033704772] [2024-10-12 00:07:48,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:48,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:07:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:07:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:07:48,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:48,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 00:07:48,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:48,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:48,588 INFO L124 PetriNetUnfolderBase]: 2456/4291 cut-off events. [2024-10-12 00:07:48,588 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-12 00:07:48,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 4291 events. 2456/4291 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28994 event pairs, 2170 based on Foata normal form. 6/3138 useless extension candidates. Maximal degree in co-relation 7779. Up to 3378 conditions per place. [2024-10-12 00:07:48,627 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-10-12 00:07:48,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 436 flow [2024-10-12 00:07:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:07:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:07:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-10-12 00:07:48,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-10-12 00:07:48,632 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 10 states and 278 transitions. [2024-10-12 00:07:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 436 flow [2024-10-12 00:07:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 378 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-12 00:07:48,636 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 338 flow [2024-10-12 00:07:48,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-10-12 00:07:48,637 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-10-12 00:07:48,637 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 338 flow [2024-10-12 00:07:48,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 00:07:48,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:48,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:48,660 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 00:07:48,840 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 00:07:48,841 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:48,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1274722415, now seen corresponding path program 1 times [2024-10-12 00:07:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:48,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965526113] [2024-10-12 00:07:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:48,954 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 00:07:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965526113] [2024-10-12 00:07:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965526113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449954585] [2024-10-12 00:07:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:48,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:07:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:07:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:07:48,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:48,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 00:07:48,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:48,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:48,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:49,458 INFO L124 PetriNetUnfolderBase]: 2593/4569 cut-off events. [2024-10-12 00:07:49,459 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-12 00:07:49,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 4569 events. 2593/4569 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30790 event pairs, 2297 based on Foata normal form. 98/3549 useless extension candidates. Maximal degree in co-relation 8399. Up to 3393 conditions per place. [2024-10-12 00:07:49,502 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 85 selfloop transitions, 3 changer transitions 1/109 dead transitions. [2024-10-12 00:07:49,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 651 flow [2024-10-12 00:07:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-10-12 00:07:49,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-10-12 00:07:49,504 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 338 flow. Second operand 4 states and 162 transitions. [2024-10-12 00:07:49,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 651 flow [2024-10-12 00:07:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 617 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-12 00:07:49,511 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 333 flow [2024-10-12 00:07:49,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-10-12 00:07:49,513 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-10-12 00:07:49,514 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 333 flow [2024-10-12 00:07:49,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 00:07:49,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:49,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:49,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:07:49,515 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:49,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash -189526413, now seen corresponding path program 1 times [2024-10-12 00:07:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485473329] [2024-10-12 00:07:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:49,684 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 00:07:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485473329] [2024-10-12 00:07:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485473329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783404466] [2024-10-12 00:07:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:49,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:49,687 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 00:07:49,688 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 00:07:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:49,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:07:49,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:49,788 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 00:07:49,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:07:49,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783404466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:49,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:07:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-12 00:07:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607315713] [2024-10-12 00:07:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:49,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:07:49,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:49,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 00:07:49,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:49,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:49,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:50,080 INFO L124 PetriNetUnfolderBase]: 1818/3329 cut-off events. [2024-10-12 00:07:50,080 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-10-12 00:07:50,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 3329 events. 1818/3329 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21655 event pairs, 1588 based on Foata normal form. 0/2749 useless extension candidates. Maximal degree in co-relation 6350. Up to 2572 conditions per place. [2024-10-12 00:07:50,106 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 56 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-10-12 00:07:50,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 435 flow [2024-10-12 00:07:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-12 00:07:50,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-12 00:07:50,108 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 333 flow. Second operand 3 states and 111 transitions. [2024-10-12 00:07:50,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 435 flow [2024-10-12 00:07:50,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 431 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:50,112 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 319 flow [2024-10-12 00:07:50,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-10-12 00:07:50,113 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-10-12 00:07:50,113 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 319 flow [2024-10-12 00:07:50,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 00:07:50,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:50,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:50,131 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 00:07:50,314 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 00:07:50,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:50,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:50,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2068854914, now seen corresponding path program 1 times [2024-10-12 00:07:50,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:50,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294265549] [2024-10-12 00:07:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:50,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:50,370 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 00:07:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294265549] [2024-10-12 00:07:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294265549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:50,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:50,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:07:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649666629] [2024-10-12 00:07:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:50,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:50,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:50,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 00:07:50,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:50,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:50,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:50,687 INFO L124 PetriNetUnfolderBase]: 1664/3063 cut-off events. [2024-10-12 00:07:50,687 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-12 00:07:50,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 3063 events. 1664/3063 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18782 event pairs, 584 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 6048. Up to 1751 conditions per place. [2024-10-12 00:07:50,707 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-10-12 00:07:50,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 502 flow [2024-10-12 00:07:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-10-12 00:07:50,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-10-12 00:07:50,709 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 319 flow. Second operand 3 states and 125 transitions. [2024-10-12 00:07:50,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 502 flow [2024-10-12 00:07:50,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:07:50,712 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 324 flow [2024-10-12 00:07:50,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-10-12 00:07:50,713 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-10-12 00:07:50,713 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 324 flow [2024-10-12 00:07:50,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 00:07:50,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:50,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:50,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:07:50,714 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:50,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1746229002, now seen corresponding path program 1 times [2024-10-12 00:07:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439293703] [2024-10-12 00:07:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:50,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:50,767 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 00:07:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439293703] [2024-10-12 00:07:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439293703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:50,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:07:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251266481] [2024-10-12 00:07:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:50,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:07:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:07:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:07:50,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-12 00:07:50,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 00:07:50,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:50,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-12 00:07:50,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:51,284 INFO L124 PetriNetUnfolderBase]: 2845/5014 cut-off events. [2024-10-12 00:07:51,284 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-10-12 00:07:51,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 5014 events. 2845/5014 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 32143 event pairs, 1762 based on Foata normal form. 96/4604 useless extension candidates. Maximal degree in co-relation 10486. Up to 3069 conditions per place. [2024-10-12 00:07:51,329 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 94 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-12 00:07:51,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 626 flow [2024-10-12 00:07:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-12 00:07:51,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-12 00:07:51,379 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 324 flow. Second operand 4 states and 165 transitions. [2024-10-12 00:07:51,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 626 flow [2024-10-12 00:07:51,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:51,385 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 351 flow [2024-10-12 00:07:51,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-10-12 00:07:51,386 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-10-12 00:07:51,386 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 351 flow [2024-10-12 00:07:51,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 00:07:51,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:51,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:51,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:07:51,387 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:51,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1200309641, now seen corresponding path program 1 times [2024-10-12 00:07:51,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:51,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518227390] [2024-10-12 00:07:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:51,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:51,448 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 00:07:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518227390] [2024-10-12 00:07:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518227390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:07:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478094607] [2024-10-12 00:07:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:51,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:07:51,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:51,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:51,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:51,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:51,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:51,853 INFO L124 PetriNetUnfolderBase]: 1973/3727 cut-off events. [2024-10-12 00:07:51,853 INFO L125 PetriNetUnfolderBase]: For 1305/1365 co-relation queries the response was YES. [2024-10-12 00:07:51,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 3727 events. 1973/3727 cut-off events. For 1305/1365 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23908 event pairs, 896 based on Foata normal form. 15/3376 useless extension candidates. Maximal degree in co-relation 8420. Up to 2593 conditions per place. [2024-10-12 00:07:51,876 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-10-12 00:07:51,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 516 flow [2024-10-12 00:07:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-12 00:07:51,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-12 00:07:51,878 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 351 flow. Second operand 3 states and 119 transitions. [2024-10-12 00:07:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 516 flow [2024-10-12 00:07:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:51,882 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 371 flow [2024-10-12 00:07:51,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-12 00:07:51,883 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-10-12 00:07:51,883 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 371 flow [2024-10-12 00:07:51,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:51,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:51,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:51,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:07:51,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:51,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1714169520, now seen corresponding path program 1 times [2024-10-12 00:07:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985112785] [2024-10-12 00:07:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:52,012 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 00:07:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985112785] [2024-10-12 00:07:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985112785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:52,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:52,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:07:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109858703] [2024-10-12 00:07:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:52,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:07:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:07:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:07:52,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:52,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:52,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:52,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:52,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:52,537 INFO L124 PetriNetUnfolderBase]: 2356/4430 cut-off events. [2024-10-12 00:07:52,537 INFO L125 PetriNetUnfolderBase]: For 2443/2583 co-relation queries the response was YES. [2024-10-12 00:07:52,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 4430 events. 2356/4430 cut-off events. For 2443/2583 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 28146 event pairs, 1909 based on Foata normal form. 100/4169 useless extension candidates. Maximal degree in co-relation 10546. Up to 2808 conditions per place. [2024-10-12 00:07:52,571 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 72 selfloop transitions, 7 changer transitions 6/105 dead transitions. [2024-10-12 00:07:52,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 628 flow [2024-10-12 00:07:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-10-12 00:07:52,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-10-12 00:07:52,573 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 371 flow. Second operand 4 states and 155 transitions. [2024-10-12 00:07:52,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 628 flow [2024-10-12 00:07:52,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 611 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:52,580 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2024-10-12 00:07:52,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-10-12 00:07:52,582 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-10-12 00:07:52,583 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2024-10-12 00:07:52,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:52,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:52,583 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:07:52,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:07:52,584 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:52,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1900093968, now seen corresponding path program 2 times [2024-10-12 00:07:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:52,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716757196] [2024-10-12 00:07:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:52,741 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 00:07:52,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:52,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716757196] [2024-10-12 00:07:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716757196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:52,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803714978] [2024-10-12 00:07:52,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:07:52,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:52,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:52,745 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 00:07:52,746 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 00:07:52,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:07:52,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:07:52,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:07:52,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:52,885 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 00:07:52,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:52,927 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 00:07:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803714978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:52,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:07:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812361606] [2024-10-12 00:07:52,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:52,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:07:52,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:07:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:07:52,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:52,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 00:07:52,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:52,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:52,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:53,710 INFO L124 PetriNetUnfolderBase]: 2359/4453 cut-off events. [2024-10-12 00:07:53,710 INFO L125 PetriNetUnfolderBase]: For 1873/2013 co-relation queries the response was YES. [2024-10-12 00:07:53,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 4453 events. 2359/4453 cut-off events. For 1873/2013 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28520 event pairs, 1909 based on Foata normal form. 4/4093 useless extension candidates. Maximal degree in co-relation 10316. Up to 3426 conditions per place. [2024-10-12 00:07:53,740 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-10-12 00:07:53,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 551 flow [2024-10-12 00:07:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:07:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:07:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 571 transitions. [2024-10-12 00:07:53,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3398809523809524 [2024-10-12 00:07:53,743 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 24 states and 571 transitions. [2024-10-12 00:07:53,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 551 flow [2024-10-12 00:07:53,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:53,749 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 485 flow [2024-10-12 00:07:53,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-10-12 00:07:53,750 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-10-12 00:07:53,750 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 485 flow [2024-10-12 00:07:53,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 00:07:53,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:53,751 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:53,770 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 00:07:53,951 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,SelfDestructingSolverStorable9 [2024-10-12 00:07:53,951 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:53,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1297551664, now seen corresponding path program 1 times [2024-10-12 00:07:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:53,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049458086] [2024-10-12 00:07:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049458086] [2024-10-12 00:07:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049458086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500239466] [2024-10-12 00:07:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:54,147 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 00:07:54,148 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 00:07:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:54,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:07:54,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:54,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500239466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:54,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-12 00:07:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841870996] [2024-10-12 00:07:54,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:54,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:07:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:07:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:07:54,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:54,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 485 flow. Second operand has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 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 00:07:54,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:54,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:54,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:55,434 INFO L124 PetriNetUnfolderBase]: 3877/7370 cut-off events. [2024-10-12 00:07:55,435 INFO L125 PetriNetUnfolderBase]: For 3321/3461 co-relation queries the response was YES. [2024-10-12 00:07:55,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 7370 events. 3877/7370 cut-off events. For 3321/3461 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 53088 event pairs, 2603 based on Foata normal form. 232/6969 useless extension candidates. Maximal degree in co-relation 17065. Up to 3249 conditions per place. [2024-10-12 00:07:55,484 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 105 selfloop transitions, 31 changer transitions 17/171 dead transitions. [2024-10-12 00:07:55,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1266 flow [2024-10-12 00:07:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:07:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-12 00:07:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2024-10-12 00:07:55,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-12 00:07:55,486 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 485 flow. Second operand 12 states and 352 transitions. [2024-10-12 00:07:55,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1266 flow [2024-10-12 00:07:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1096 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-10-12 00:07:55,496 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 651 flow [2024-10-12 00:07:55,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-10-12 00:07:55,497 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-10-12 00:07:55,497 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 651 flow [2024-10-12 00:07:55,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 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 00:07:55,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:55,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:55,517 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 00:07:55,702 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 00:07:55,703 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:55,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash -932144561, now seen corresponding path program 1 times [2024-10-12 00:07:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:55,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598349485] [2024-10-12 00:07:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:55,819 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 00:07:55,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598349485] [2024-10-12 00:07:55,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598349485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835714533] [2024-10-12 00:07:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:55,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:55,822 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 00:07:55,823 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 00:07:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:55,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:07:55,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:55,959 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 00:07:55,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:07:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835714533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:55,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:07:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-12 00:07:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111583210] [2024-10-12 00:07:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:55,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:07:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:07:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:07:55,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-12 00:07:55,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 00:07:55,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:55,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-12 00:07:55,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:56,471 INFO L124 PetriNetUnfolderBase]: 2913/5811 cut-off events. [2024-10-12 00:07:56,472 INFO L125 PetriNetUnfolderBase]: For 3634/3718 co-relation queries the response was YES. [2024-10-12 00:07:56,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 5811 events. 2913/5811 cut-off events. For 3634/3718 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 42516 event pairs, 2421 based on Foata normal form. 266/5633 useless extension candidates. Maximal degree in co-relation 13469. Up to 4362 conditions per place. [2024-10-12 00:07:56,522 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 83 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-10-12 00:07:56,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 811 flow [2024-10-12 00:07:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:07:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:07:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-12 00:07:56,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-12 00:07:56,524 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 651 flow. Second operand 3 states and 108 transitions. [2024-10-12 00:07:56,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 811 flow [2024-10-12 00:07:56,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 799 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-12 00:07:56,534 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 633 flow [2024-10-12 00:07:56,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-10-12 00:07:56,536 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-10-12 00:07:56,537 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 633 flow [2024-10-12 00:07:56,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 00:07:56,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:56,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:56,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:07:56,737 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 00:07:56,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:56,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1621894546, now seen corresponding path program 2 times [2024-10-12 00:07:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294435161] [2024-10-12 00:07:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:56,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294435161] [2024-10-12 00:07:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294435161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577639229] [2024-10-12 00:07:56,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:07:56,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:56,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:56,870 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 00:07:56,872 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 00:07:56,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:07:56,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:07:56,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:07:56,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:57,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:07:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577639229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:07:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-12 00:07:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603443266] [2024-10-12 00:07:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:57,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:07:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:07:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:07:57,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-12 00:07:57,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 00:07:57,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:57,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-12 00:07:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:57,800 INFO L124 PetriNetUnfolderBase]: 3599/6531 cut-off events. [2024-10-12 00:07:57,800 INFO L125 PetriNetUnfolderBase]: For 3050/3050 co-relation queries the response was YES. [2024-10-12 00:07:57,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 6531 events. 3599/6531 cut-off events. For 3050/3050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44691 event pairs, 1251 based on Foata normal form. 88/6177 useless extension candidates. Maximal degree in co-relation 15515. Up to 2097 conditions per place. [2024-10-12 00:07:57,835 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 109 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-12 00:07:57,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 947 flow [2024-10-12 00:07:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:07:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:07:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-12 00:07:57,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-12 00:07:57,837 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 633 flow. Second operand 4 states and 150 transitions. [2024-10-12 00:07:57,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 947 flow [2024-10-12 00:07:57,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:07:57,853 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 642 flow [2024-10-12 00:07:57,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-10-12 00:07:57,855 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2024-10-12 00:07:57,855 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 642 flow [2024-10-12 00:07:57,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 00:07:57,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:57,855 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-12 00:07:57,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:07:58,059 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 00:07:58,060 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:58,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1255992720, now seen corresponding path program 1 times [2024-10-12 00:07:58,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:58,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653457484] [2024-10-12 00:07:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:58,263 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 00:07:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653457484] [2024-10-12 00:07:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653457484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576473659] [2024-10-12 00:07:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:58,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:58,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:58,265 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 00:07:58,266 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 00:07:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:58,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:07:58,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:58,409 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 00:07:58,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:58,601 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 00:07:58,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576473659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:58,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:58,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-12 00:07:58,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678109996] [2024-10-12 00:07:58,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:58,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:07:58,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:07:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-12 00:07:58,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-12 00:07:58,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 642 flow. Second operand has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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 00:07:58,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:58,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-12 00:07:58,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:59,685 INFO L124 PetriNetUnfolderBase]: 2941/5883 cut-off events. [2024-10-12 00:07:59,685 INFO L125 PetriNetUnfolderBase]: For 5823/5865 co-relation queries the response was YES. [2024-10-12 00:07:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 5883 events. 2941/5883 cut-off events. For 5823/5865 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43024 event pairs, 2421 based on Foata normal form. 21/5460 useless extension candidates. Maximal degree in co-relation 14675. Up to 4344 conditions per place. [2024-10-12 00:07:59,734 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 41 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-10-12 00:07:59,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1470 flow [2024-10-12 00:07:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 00:07:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-12 00:07:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 657 transitions. [2024-10-12 00:07:59,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.360989010989011 [2024-10-12 00:07:59,738 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 642 flow. Second operand 26 states and 657 transitions. [2024-10-12 00:07:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1470 flow [2024-10-12 00:07:59,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 1456 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:07:59,756 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1444 flow [2024-10-12 00:07:59,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1444, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-10-12 00:07:59,757 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-10-12 00:07:59,757 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1444 flow [2024-10-12 00:07:59,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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 00:07:59,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:59,758 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 00:07:59,780 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 00:07:59,958 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 00:07:59,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:07:59,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1829192684, now seen corresponding path program 1 times [2024-10-12 00:07:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650987811] [2024-10-12 00:07:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:00,517 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 00:08:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650987811] [2024-10-12 00:08:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650987811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734210101] [2024-10-12 00:08:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:00,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:00,520 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 00:08:00,522 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 00:08:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:00,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:08:00,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:00,676 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 00:08:00,976 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:08:00,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-12 00:08:01,000 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 00:08:01,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:01,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-12 00:08:01,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-12 00:08:01,398 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 00:08:01,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734210101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:01,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:01,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-12 00:08:01,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145160810] [2024-10-12 00:08:01,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:01,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:08:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:08:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:08:01,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-10-12 00:08:01,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1444 flow. Second operand has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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 00:08:01,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:01,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-10-12 00:08:01,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:05,590 INFO L124 PetriNetUnfolderBase]: 15047/25831 cut-off events. [2024-10-12 00:08:05,590 INFO L125 PetriNetUnfolderBase]: For 13564/13828 co-relation queries the response was YES. [2024-10-12 00:08:05,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60885 conditions, 25831 events. 15047/25831 cut-off events. For 13564/13828 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 209027 event pairs, 6374 based on Foata normal form. 0/23385 useless extension candidates. Maximal degree in co-relation 60848. Up to 4521 conditions per place. [2024-10-12 00:08:05,759 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 270 selfloop transitions, 110 changer transitions 8/401 dead transitions. [2024-10-12 00:08:05,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 401 transitions, 3150 flow [2024-10-12 00:08:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 00:08:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-12 00:08:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 548 transitions. [2024-10-12 00:08:05,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-10-12 00:08:05,762 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1444 flow. Second operand 18 states and 548 transitions. [2024-10-12 00:08:05,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 401 transitions, 3150 flow [2024-10-12 00:08:05,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 401 transitions, 2859 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:05,796 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1457 flow [2024-10-12 00:08:05,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1457, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-10-12 00:08:05,797 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-10-12 00:08:05,797 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1457 flow [2024-10-12 00:08:05,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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 00:08:05,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:05,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:05,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:08:06,002 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 00:08:06,003 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:08:06,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1260875763, now seen corresponding path program 1 times [2024-10-12 00:08:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921985114] [2024-10-12 00:08:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921985114] [2024-10-12 00:08:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921985114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781605059] [2024-10-12 00:08:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:06,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:06,097 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 00:08:06,099 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 00:08:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:06,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:06,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:06,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781605059] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:06,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:08:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755055260] [2024-10-12 00:08:06,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:06,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:08:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:08:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:08:06,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-12 00:08:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1457 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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 00:08:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:06,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-12 00:08:06,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:09,878 INFO L124 PetriNetUnfolderBase]: 15319/28757 cut-off events. [2024-10-12 00:08:09,878 INFO L125 PetriNetUnfolderBase]: For 27940/28384 co-relation queries the response was YES. [2024-10-12 00:08:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 28757 events. 15319/28757 cut-off events. For 27940/28384 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 248194 event pairs, 4660 based on Foata normal form. 0/27473 useless extension candidates. Maximal degree in co-relation 74716. Up to 10594 conditions per place. [2024-10-12 00:08:10,087 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 359 selfloop transitions, 13 changer transitions 0/393 dead transitions. [2024-10-12 00:08:10,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 393 transitions, 3303 flow [2024-10-12 00:08:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-10-12 00:08:10,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2024-10-12 00:08:10,089 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1457 flow. Second operand 10 states and 393 transitions. [2024-10-12 00:08:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 393 transitions, 3303 flow [2024-10-12 00:08:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 393 transitions, 3214 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-10-12 00:08:10,238 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1496 flow [2024-10-12 00:08:10,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-10-12 00:08:10,239 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 88 predicate places. [2024-10-12 00:08:10,239 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1496 flow [2024-10-12 00:08:10,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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 00:08:10,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:10,239 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 00:08:10,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:08:10,440 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,SelfDestructingSolverStorable15 [2024-10-12 00:08:10,440 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:08:10,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1400375729, now seen corresponding path program 1 times [2024-10-12 00:08:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:10,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084734376] [2024-10-12 00:08:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:10,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:11,098 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 00:08:11,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084734376] [2024-10-12 00:08:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084734376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108313718] [2024-10-12 00:08:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:11,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:11,100 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 00:08:11,101 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 00:08:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:11,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:08:11,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:11,231 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 00:08:11,491 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:08:11,491 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 00:08:11,517 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 00:08:11,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:11,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:08:11,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-10-12 00:08:11,852 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 00:08:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108313718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:11,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-12 00:08:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703837667] [2024-10-12 00:08:11,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:11,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:08:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:08:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:08:12,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2024-10-12 00:08:12,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1496 flow. Second operand has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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 00:08:12,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:12,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2024-10-12 00:08:12,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:17,374 INFO L124 PetriNetUnfolderBase]: 20962/36567 cut-off events. [2024-10-12 00:08:17,374 INFO L125 PetriNetUnfolderBase]: For 47721/48095 co-relation queries the response was YES. [2024-10-12 00:08:17,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105013 conditions, 36567 events. 20962/36567 cut-off events. For 47721/48095 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 302685 event pairs, 10028 based on Foata normal form. 572/36096 useless extension candidates. Maximal degree in co-relation 104970. Up to 7425 conditions per place. [2024-10-12 00:08:17,660 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 370 selfloop transitions, 108 changer transitions 11/507 dead transitions. [2024-10-12 00:08:17,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 507 transitions, 4176 flow [2024-10-12 00:08:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 00:08:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-12 00:08:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 559 transitions. [2024-10-12 00:08:17,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44365079365079363 [2024-10-12 00:08:17,662 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1496 flow. Second operand 18 states and 559 transitions. [2024-10-12 00:08:17,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 507 transitions, 4176 flow [2024-10-12 00:08:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 507 transitions, 3840 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:17,907 INFO L231 Difference]: Finished difference. Result has 172 places, 184 transitions, 1703 flow [2024-10-12 00:08:17,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1703, PETRI_PLACES=172, PETRI_TRANSITIONS=184} [2024-10-12 00:08:17,908 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 104 predicate places. [2024-10-12 00:08:17,908 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 184 transitions, 1703 flow [2024-10-12 00:08:17,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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 00:08:17,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:17,908 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, 1, 1, 1] [2024-10-12 00:08:17,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:08:18,109 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,SelfDestructingSolverStorable16 [2024-10-12 00:08:18,109 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:08:18,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1403960753, now seen corresponding path program 1 times [2024-10-12 00:08:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397988976] [2024-10-12 00:08:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:18,596 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 00:08:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397988976] [2024-10-12 00:08:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397988976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777300891] [2024-10-12 00:08:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:18,600 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 00:08:18,601 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 00:08:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:18,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:18,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:18,739 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 00:08:19,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-12 00:08:19,293 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 00:08:19,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:19,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-12 00:08:19,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-12 00:08:19,784 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 00:08:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777300891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:19,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-10-12 00:08:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642686244] [2024-10-12 00:08:19,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:19,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 00:08:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:19,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 00:08:19,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-10-12 00:08:19,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-10-12 00:08:19,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 184 transitions, 1703 flow. Second operand has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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 00:08:19,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:19,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-10-12 00:08:19,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:30,198 INFO L124 PetriNetUnfolderBase]: 37724/64828 cut-off events. [2024-10-12 00:08:30,198 INFO L125 PetriNetUnfolderBase]: For 94482/96248 co-relation queries the response was YES. [2024-10-12 00:08:30,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185791 conditions, 64828 events. 37724/64828 cut-off events. For 94482/96248 co-relation queries the response was YES. Maximal size of possible extension queue 1701. Compared 567504 event pairs, 6528 based on Foata normal form. 96/60806 useless extension candidates. Maximal degree in co-relation 185746. Up to 11397 conditions per place. [2024-10-12 00:08:31,083 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 563 selfloop transitions, 135 changer transitions 22/739 dead transitions. [2024-10-12 00:08:31,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 739 transitions, 5763 flow [2024-10-12 00:08:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 00:08:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-12 00:08:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 807 transitions. [2024-10-12 00:08:31,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42698412698412697 [2024-10-12 00:08:31,086 INFO L175 Difference]: Start difference. First operand has 172 places, 184 transitions, 1703 flow. Second operand 27 states and 807 transitions. [2024-10-12 00:08:31,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 739 transitions, 5763 flow [2024-10-12 00:08:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 739 transitions, 5551 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:31,727 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2232 flow [2024-10-12 00:08:31,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2232, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-10-12 00:08:31,728 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 127 predicate places. [2024-10-12 00:08:31,729 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2232 flow [2024-10-12 00:08:31,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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 00:08:31,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:31,729 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:31,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:31,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:08:31,934 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:08:31,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2111293468, now seen corresponding path program 1 times [2024-10-12 00:08:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955502580] [2024-10-12 00:08:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955502580] [2024-10-12 00:08:32,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955502580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:32,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876605676] [2024-10-12 00:08:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:32,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:32,990 INFO L229 MonitoredProcess]: Starting monitored process 14 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 00:08:32,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:08:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:33,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 00:08:33,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:33,111 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 00:08:33,144 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 00:08:33,225 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:08:33,226 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 00:08:33,254 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 00:08:33,273 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 00:08:33,295 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 00:08:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:33,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:34,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:34,100 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 56 treesize of output 44 [2024-10-12 00:08:34,113 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:08:34,114 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 66 treesize of output 53 [2024-10-12 00:08:34,125 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-12 00:08:34,126 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 40 treesize of output 28 [2024-10-12 00:08:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876605676] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:34,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-12 00:08:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145368830] [2024-10-12 00:08:34,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:34,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:08:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:08:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2024-10-12 00:08:34,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-10-12 00:08:34,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2232 flow. Second operand has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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 00:08:34,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:34,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-10-12 00:08:34,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:46,866 INFO L124 PetriNetUnfolderBase]: 49298/81605 cut-off events. [2024-10-12 00:08:46,866 INFO L125 PetriNetUnfolderBase]: For 144679/145656 co-relation queries the response was YES. [2024-10-12 00:08:47,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255446 conditions, 81605 events. 49298/81605 cut-off events. For 144679/145656 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 691828 event pairs, 21754 based on Foata normal form. 418/78916 useless extension candidates. Maximal degree in co-relation 255392. Up to 38403 conditions per place. [2024-10-12 00:08:48,109 INFO L140 encePairwiseOnDemand]: 54/70 looper letters, 488 selfloop transitions, 118 changer transitions 35/654 dead transitions. [2024-10-12 00:08:48,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 654 transitions, 6223 flow [2024-10-12 00:08:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 00:08:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-12 00:08:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 653 transitions. [2024-10-12 00:08:48,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3216748768472906 [2024-10-12 00:08:48,111 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2232 flow. Second operand 29 states and 653 transitions. [2024-10-12 00:08:48,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 654 transitions, 6223 flow [2024-10-12 00:08:50,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 654 transitions, 5881 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-10-12 00:08:50,553 INFO L231 Difference]: Finished difference. Result has 227 places, 273 transitions, 2772 flow [2024-10-12 00:08:50,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2772, PETRI_PLACES=227, PETRI_TRANSITIONS=273} [2024-10-12 00:08:50,554 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2024-10-12 00:08:50,554 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 273 transitions, 2772 flow [2024-10-12 00:08:50,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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 00:08:50,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:50,554 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, 1, 1, 1, 1] [2024-10-12 00:08:50,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:50,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:50,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:08:50,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 298265733, now seen corresponding path program 1 times [2024-10-12 00:08:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991377296] [2024-10-12 00:08:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:51,985 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 00:08:51,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:51,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991377296] [2024-10-12 00:08:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991377296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:51,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298445953] [2024-10-12 00:08:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:51,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:51,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:51,989 INFO L229 MonitoredProcess]: Starting monitored process 15 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 00:08:51,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:08:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:52,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:52,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:52,159 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 00:08:52,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-12 00:08:52,511 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 00:08:52,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:52,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:08:52,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-10-12 00:08:52,865 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 00:08:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298445953] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:52,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2024-10-12 00:08:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119403358] [2024-10-12 00:08:52,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:52,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 00:08:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 00:08:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-10-12 00:08:53,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-10-12 00:08:53,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 273 transitions, 2772 flow. Second operand has 29 states, 29 states have (on average 19.06896551724138) internal successors, (553), 29 states have internal predecessors, (553), 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 00:08:53,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:53,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-10-12 00:08:53,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand