./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:51:41,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:51:41,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:51:41,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:51:41,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:51:41,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:51:41,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:51:41,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:51:41,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:51:41,836 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:51:41,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:51:41,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:51:41,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:51:41,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:51:41,838 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:51:41,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:51:41,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:51:41,840 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:51:41,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:51:41,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:51:41,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:51:41,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:51:41,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:51:41,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:51:41,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:51:41,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:51:41,843 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:51:41,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:51:41,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:51:41,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:51:41,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:51:41,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:51:41,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:51:41,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:51:41,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:51:41,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:51:41,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:51:41,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:51:41,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:51:41,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:51:41,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:51:41,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:51:41,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:51:41,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:51:41,853 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2024-10-14 23:51:42,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:51:42,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:51:42,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:51:42,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:51:42,158 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:51:42,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-10-14 23:51:43,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:51:44,014 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:51:44,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-10-14 23:51:44,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c9d835d/13cd3c72b7a44ce991c32f4928b959dd/FLAG5a29aa26c [2024-10-14 23:51:44,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c9d835d/13cd3c72b7a44ce991c32f4928b959dd [2024-10-14 23:51:44,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:51:44,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:51:44,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:51:44,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:51:44,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:51:44,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:44" (1/1) ... [2024-10-14 23:51:44,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382c7b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:44, skipping insertion in model container [2024-10-14 23:51:44,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:44" (1/1) ... [2024-10-14 23:51:44,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:51:44,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:51:44,963 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:51:45,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:51:45,201 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:51:45,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45 WrapperNode [2024-10-14 23:51:45,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:51:45,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:51:45,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:51:45,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:51:45,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,303 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 304 [2024-10-14 23:51:45,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:51:45,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:51:45,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:51:45,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:51:45,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,367 INFO L175 MemorySlicer]: Split 48 memory accesses to 4 slices as follows [2, 5, 34, 7]. 71 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 3, 8, 2]. The 15 writes are split as follows [0, 1, 12, 2]. [2024-10-14 23:51:45,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:51:45,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:51:45,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:51:45,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:51:45,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2024-10-14 23:51:45,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:51:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:51:45,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:51:45,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:51:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-14 23:51:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:51:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 23:51:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:51:45,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 23:51:45,505 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:51:45,770 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:51:45,772 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:51:46,234 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:51:46,235 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:51:46,544 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:51:46,546 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-14 23:51:46,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46 BoogieIcfgContainer [2024-10-14 23:51:46,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:51:46,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:51:46,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:51:46,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:51:46,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:44" (1/3) ... [2024-10-14 23:51:46,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773bbf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2024-10-14 23:51:46,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (2/3) ... [2024-10-14 23:51:46,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773bbf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2024-10-14 23:51:46,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46" (3/3) ... [2024-10-14 23:51:46,567 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-10-14 23:51:46,621 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:51:46,622 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-14 23:51:46,622 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:51:46,718 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 23:51:46,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 87 transitions, 181 flow [2024-10-14 23:51:46,807 INFO L124 PetriNetUnfolderBase]: 12/91 cut-off events. [2024-10-14 23:51:46,807 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:51:46,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 12/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 229 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2024-10-14 23:51:46,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 87 transitions, 181 flow [2024-10-14 23:51:46,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 86 transitions, 179 flow [2024-10-14 23:51:46,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:51:46,837 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;@356acb9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:51:46,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 23:51:46,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:51:46,842 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-14 23:51:46,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:51:46,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:46,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:51:46,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:46,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -913335993, now seen corresponding path program 1 times [2024-10-14 23:51:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416332672] [2024-10-14 23:51:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416332672] [2024-10-14 23:51:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416332672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:51:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534909900] [2024-10-14 23:51:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:47,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:51:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:51:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:51:47,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-14 23:51:47,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-14 23:51:47,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:47,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-14 23:51:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:47,678 INFO L124 PetriNetUnfolderBase]: 223/496 cut-off events. [2024-10-14 23:51:47,679 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:51:47,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 496 events. 223/496 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1950 event pairs, 180 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 886. Up to 432 conditions per place. [2024-10-14 23:51:47,684 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 52 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-14 23:51:47,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 271 flow [2024-10-14 23:51:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:51:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:51:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-14 23:51:47,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2024-10-14 23:51:47,700 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 179 flow. Second operand 3 states and 134 transitions. [2024-10-14 23:51:47,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 271 flow [2024-10-14 23:51:47,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:51:47,707 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 167 flow [2024-10-14 23:51:47,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-10-14 23:51:47,713 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-14 23:51:47,713 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 167 flow [2024-10-14 23:51:47,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-14 23:51:47,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:47,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:47,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:51:47,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:47,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash -573887276, now seen corresponding path program 1 times [2024-10-14 23:51:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:47,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41349297] [2024-10-14 23:51:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:47,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:47,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:47,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41349297] [2024-10-14 23:51:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41349297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:47,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:51:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313572322] [2024-10-14 23:51:47,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:47,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:51:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:51:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:51:47,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 87 [2024-10-14 23:51:47,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-10-14 23:51:47,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:47,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 87 [2024-10-14 23:51:47,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:48,083 INFO L124 PetriNetUnfolderBase]: 224/512 cut-off events. [2024-10-14 23:51:48,083 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:51:48,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 512 events. 224/512 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2081 event pairs, 180 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 906. Up to 446 conditions per place. [2024-10-14 23:51:48,088 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 60 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-10-14 23:51:48,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 309 flow [2024-10-14 23:51:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:51:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:51:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-14 23:51:48,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5478927203065134 [2024-10-14 23:51:48,092 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 167 flow. Second operand 3 states and 143 transitions. [2024-10-14 23:51:48,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 309 flow [2024-10-14 23:51:48,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:51:48,095 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 184 flow [2024-10-14 23:51:48,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=163, 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=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-10-14 23:51:48,096 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-10-14 23:51:48,097 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 184 flow [2024-10-14 23:51:48,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-10-14 23:51:48,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:48,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:48,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:51:48,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:48,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2039049889, now seen corresponding path program 1 times [2024-10-14 23:51:48,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:48,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518903270] [2024-10-14 23:51:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518903270] [2024-10-14 23:51:48,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518903270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:51:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298970648] [2024-10-14 23:51:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:48,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:51:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:51:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:51:48,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-14 23:51:48,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:48,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:48,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-14 23:51:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:48,514 INFO L124 PetriNetUnfolderBase]: 224/510 cut-off events. [2024-10-14 23:51:48,514 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 23:51:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 510 events. 224/510 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2066 event pairs, 180 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 906. Up to 448 conditions per place. [2024-10-14 23:51:48,519 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 61 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2024-10-14 23:51:48,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 324 flow [2024-10-14 23:51:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:51:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:51:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-14 23:51:48,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46839080459770116 [2024-10-14 23:51:48,522 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 184 flow. Second operand 4 states and 163 transitions. [2024-10-14 23:51:48,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 324 flow [2024-10-14 23:51:48,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:51:48,525 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 202 flow [2024-10-14 23:51:48,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-10-14 23:51:48,527 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-14 23:51:48,527 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 202 flow [2024-10-14 23:51:48,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:48,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:48,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:48,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:51:48,528 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:48,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash -883999795, now seen corresponding path program 1 times [2024-10-14 23:51:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:48,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175715032] [2024-10-14 23:51:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:48,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:48,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175715032] [2024-10-14 23:51:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175715032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:48,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:48,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:51:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012450885] [2024-10-14 23:51:48,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:48,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:51:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:51:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:51:48,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-10-14 23:51:48,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-10-14 23:51:48,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:48,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-10-14 23:51:48,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:48,878 INFO L124 PetriNetUnfolderBase]: 223/505 cut-off events. [2024-10-14 23:51:48,879 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 23:51:48,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 505 events. 223/505 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1956 event pairs, 180 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 941. Up to 432 conditions per place. [2024-10-14 23:51:48,882 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 57 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2024-10-14 23:51:48,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 321 flow [2024-10-14 23:51:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:51:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:51:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-14 23:51:48,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41954022988505746 [2024-10-14 23:51:48,884 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 202 flow. Second operand 4 states and 146 transitions. [2024-10-14 23:51:48,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 321 flow [2024-10-14 23:51:48,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 315 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 23:51:48,887 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 201 flow [2024-10-14 23:51:48,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2024-10-14 23:51:48,888 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-14 23:51:48,888 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 201 flow [2024-10-14 23:51:48,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-10-14 23:51:48,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:48,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:48,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:51:48,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:48,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash 172316855, now seen corresponding path program 1 times [2024-10-14 23:51:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:48,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189757115] [2024-10-14 23:51:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:48,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:48,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189757115] [2024-10-14 23:51:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189757115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:51:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71559886] [2024-10-14 23:51:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:48,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:51:48,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:51:49,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:51:49,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:51:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:49,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 23:51:49,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:51:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:49,212 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:51:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71559886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:49,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:51:49,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-14 23:51:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449479206] [2024-10-14 23:51:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:49,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:51:49,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:51:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:51:49,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-10-14 23:51:49,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:49,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:49,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-10-14 23:51:49,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:49,475 INFO L124 PetriNetUnfolderBase]: 223/503 cut-off events. [2024-10-14 23:51:49,476 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 23:51:49,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 503 events. 223/503 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1946 event pairs, 180 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 935. Up to 436 conditions per place. [2024-10-14 23:51:49,482 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-10-14 23:51:49,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 311 flow [2024-10-14 23:51:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:51:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:51:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-14 23:51:49,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4339080459770115 [2024-10-14 23:51:49,485 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 201 flow. Second operand 4 states and 151 transitions. [2024-10-14 23:51:49,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 311 flow [2024-10-14 23:51:49,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 303 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:51:49,490 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 197 flow [2024-10-14 23:51:49,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-10-14 23:51:49,491 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-14 23:51:49,492 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 197 flow [2024-10-14 23:51:49,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:49,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:49,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:49,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:51:49,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:51:49,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:49,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1046856044, now seen corresponding path program 1 times [2024-10-14 23:51:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810806963] [2024-10-14 23:51:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:49,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810806963] [2024-10-14 23:51:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810806963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:51:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238232511] [2024-10-14 23:51:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:51:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:51:49,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:51:49,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:51:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:49,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:51:49,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:51:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:50,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:51:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238232511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:51:50,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:51:50,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:51:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703482572] [2024-10-14 23:51:50,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:51:50,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:51:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:51:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:51:50,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-14 23:51:50,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 197 flow. Second operand has 10 states, 10 states have (on average 26.1) internal successors, (261), 10 states have internal predecessors, (261), 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) [2024-10-14 23:51:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:50,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-14 23:51:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:50,410 INFO L124 PetriNetUnfolderBase]: 225/527 cut-off events. [2024-10-14 23:51:50,411 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-14 23:51:50,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 527 events. 225/527 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2149 event pairs, 180 based on Foata normal form. 3/400 useless extension candidates. Maximal degree in co-relation 979. Up to 442 conditions per place. [2024-10-14 23:51:50,414 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 62 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-10-14 23:51:50,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 377 flow [2024-10-14 23:51:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:51:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:51:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-10-14 23:51:50,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973727422003284 [2024-10-14 23:51:50,416 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 197 flow. Second operand 7 states and 242 transitions. [2024-10-14 23:51:50,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 377 flow [2024-10-14 23:51:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 91 transitions, 357 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:51:50,419 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 243 flow [2024-10-14 23:51:50,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-10-14 23:51:50,420 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-10-14 23:51:50,420 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 243 flow [2024-10-14 23:51:50,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.1) internal successors, (261), 10 states have internal predecessors, (261), 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) [2024-10-14 23:51:50,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:50,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:50,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:51:50,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 23:51:50,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:50,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1892252298, now seen corresponding path program 1 times [2024-10-14 23:51:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:50,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996718867] [2024-10-14 23:51:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:51:50,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:50,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996718867] [2024-10-14 23:51:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996718867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:51:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588631925] [2024-10-14 23:51:50,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:50,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:51:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:51:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:51:50,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-14 23:51:50,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-10-14 23:51:50,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:50,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-14 23:51:50,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:50,910 INFO L124 PetriNetUnfolderBase]: 189/478 cut-off events. [2024-10-14 23:51:50,910 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-14 23:51:50,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 478 events. 189/478 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2014 event pairs, 92 based on Foata normal form. 33/425 useless extension candidates. Maximal degree in co-relation 878. Up to 237 conditions per place. [2024-10-14 23:51:50,913 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 89 selfloop transitions, 5 changer transitions 3/113 dead transitions. [2024-10-14 23:51:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 493 flow [2024-10-14 23:51:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:51:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:51:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-14 23:51:50,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360153256704981 [2024-10-14 23:51:50,915 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 243 flow. Second operand 3 states and 166 transitions. [2024-10-14 23:51:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 493 flow [2024-10-14 23:51:50,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 113 transitions, 483 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 23:51:50,919 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 224 flow [2024-10-14 23:51:50,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-10-14 23:51:50,920 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-14 23:51:50,920 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 224 flow [2024-10-14 23:51:50,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-10-14 23:51:50,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:50,921 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:50,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:51:50,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:50,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash 643317505, now seen corresponding path program 1 times [2024-10-14 23:51:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636398559] [2024-10-14 23:51:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:51:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636398559] [2024-10-14 23:51:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636398559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:51:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342521168] [2024-10-14 23:51:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:51,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:51:51,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:51:51,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:51:51,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:51:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:51,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:51:51,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:51:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:51:51,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:51:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:51:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342521168] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:51:51,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:51:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-14 23:51:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952188318] [2024-10-14 23:51:51,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:51:51,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 23:51:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 23:51:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-14 23:51:51,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2024-10-14 23:51:51,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 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) [2024-10-14 23:51:51,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:51,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2024-10-14 23:51:51,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:51,683 INFO L124 PetriNetUnfolderBase]: 188/441 cut-off events. [2024-10-14 23:51:51,683 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-14 23:51:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 441 events. 188/441 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1581 event pairs, 150 based on Foata normal form. 2/388 useless extension candidates. Maximal degree in co-relation 894. Up to 364 conditions per place. [2024-10-14 23:51:51,687 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 56 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-10-14 23:51:51,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 348 flow [2024-10-14 23:51:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:51:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:51:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-10-14 23:51:51,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3275862068965517 [2024-10-14 23:51:51,689 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 224 flow. Second operand 6 states and 171 transitions. [2024-10-14 23:51:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 348 flow [2024-10-14 23:51:51,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:51:51,694 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 233 flow [2024-10-14 23:51:51,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-14 23:51:51,696 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-14 23:51:51,696 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 233 flow [2024-10-14 23:51:51,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 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) [2024-10-14 23:51:51,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:51,697 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:51,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:51:51,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:51:51,899 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:51,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2104797876, now seen corresponding path program 1 times [2024-10-14 23:51:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:51,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917366469] [2024-10-14 23:51:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 23:51:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917366469] [2024-10-14 23:51:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917366469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:51:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57165942] [2024-10-14 23:51:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:51:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:51:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:51:52,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-14 23:51:52,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:52,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:52,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-14 23:51:52,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:52,177 INFO L124 PetriNetUnfolderBase]: 188/440 cut-off events. [2024-10-14 23:51:52,178 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-14 23:51:52,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 440 events. 188/440 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1574 event pairs, 150 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 865. Up to 375 conditions per place. [2024-10-14 23:51:52,181 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 50 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-10-14 23:51:52,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 349 flow [2024-10-14 23:51:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:51:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:51:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-14 23:51:52,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-10-14 23:51:52,182 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 233 flow. Second operand 4 states and 150 transitions. [2024-10-14 23:51:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 349 flow [2024-10-14 23:51:52,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 338 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:51:52,185 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 246 flow [2024-10-14 23:51:52,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-10-14 23:51:52,186 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-14 23:51:52,186 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 246 flow [2024-10-14 23:51:52,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:51:52,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:52,186 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:52,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:51:52,187 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:51:52,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 924928574, now seen corresponding path program 2 times [2024-10-14 23:51:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:52,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520166454] [2024-10-14 23:51:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:52,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:51:52,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:51:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:51:52,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:51:52,285 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:51:52,287 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-14 23:51:52,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-10-14 23:51:52,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-10-14 23:51:52,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-10-14 23:51:52,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-10-14 23:51:52,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-10-14 23:51:52,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-10-14 23:51:52,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-10-14 23:51:52,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-10-14 23:51:52,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-10-14 23:51:52,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:51:52,294 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:52,297 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:51:52,298 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:51:52,367 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 23:51:52,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 131 transitions, 278 flow [2024-10-14 23:51:52,386 INFO L124 PetriNetUnfolderBase]: 23/158 cut-off events. [2024-10-14 23:51:52,386 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 23:51:52,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 158 events. 23/158 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 563 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2024-10-14 23:51:52,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 131 transitions, 278 flow [2024-10-14 23:51:52,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 131 transitions, 278 flow [2024-10-14 23:51:52,391 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:51:52,392 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;@356acb9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:51:52,392 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-14 23:51:52,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:51:52,394 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-14 23:51:52,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:51:52,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:52,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:51:52,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:51:52,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1332870553, now seen corresponding path program 1 times [2024-10-14 23:51:52,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:52,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753028887] [2024-10-14 23:51:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:52,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:52,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753028887] [2024-10-14 23:51:52,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753028887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:52,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:52,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:51:52,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494269434] [2024-10-14 23:51:52,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:52,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:51:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:51:52,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:51:52,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:51:52,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 131 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-14 23:51:52,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:52,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:51:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:55,069 INFO L124 PetriNetUnfolderBase]: 15608/23920 cut-off events. [2024-10-14 23:51:55,070 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-10-14 23:51:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46989 conditions, 23920 events. 15608/23920 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150293 event pairs, 13528 based on Foata normal form. 3/17783 useless extension candidates. Maximal degree in co-relation 38630. Up to 22895 conditions per place. [2024-10-14 23:51:55,242 INFO L140 encePairwiseOnDemand]: 118/131 looper letters, 89 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-10-14 23:51:55,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 438 flow [2024-10-14 23:51:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:51:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:51:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-10-14 23:51:55,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48091603053435117 [2024-10-14 23:51:55,244 INFO L175 Difference]: Start difference. First operand has 114 places, 131 transitions, 278 flow. Second operand 3 states and 189 transitions. [2024-10-14 23:51:55,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 438 flow [2024-10-14 23:51:55,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 120 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:51:55,247 INFO L231 Difference]: Finished difference. Result has 112 places, 120 transitions, 260 flow [2024-10-14 23:51:55,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=112, PETRI_TRANSITIONS=120} [2024-10-14 23:51:55,248 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2024-10-14 23:51:55,249 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 120 transitions, 260 flow [2024-10-14 23:51:55,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-14 23:51:55,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:55,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:55,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:51:55,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:51:55,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash -573002793, now seen corresponding path program 1 times [2024-10-14 23:51:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881250926] [2024-10-14 23:51:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:55,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:55,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881250926] [2024-10-14 23:51:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881250926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:55,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:55,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:51:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952654922] [2024-10-14 23:51:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:55,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:51:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:51:55,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:51:55,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 131 [2024-10-14 23:51:55,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 120 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-10-14 23:51:55,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:55,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 131 [2024-10-14 23:51:55,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:57,465 INFO L124 PetriNetUnfolderBase]: 15609/23936 cut-off events. [2024-10-14 23:51:57,466 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-10-14 23:51:57,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47018 conditions, 23936 events. 15609/23936 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150373 event pairs, 13528 based on Foata normal form. 1/17795 useless extension candidates. Maximal degree in co-relation 46950. Up to 22909 conditions per place. [2024-10-14 23:51:57,629 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 97 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2024-10-14 23:51:57,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 127 transitions, 476 flow [2024-10-14 23:51:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:51:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:51:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-10-14 23:51:57,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4961832061068702 [2024-10-14 23:51:57,631 INFO L175 Difference]: Start difference. First operand has 112 places, 120 transitions, 260 flow. Second operand 3 states and 195 transitions. [2024-10-14 23:51:57,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 127 transitions, 476 flow [2024-10-14 23:51:57,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 127 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:51:57,634 INFO L231 Difference]: Finished difference. Result has 113 places, 122 transitions, 277 flow [2024-10-14 23:51:57,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=113, PETRI_TRANSITIONS=122} [2024-10-14 23:51:57,635 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-14 23:51:57,636 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 122 transitions, 277 flow [2024-10-14 23:51:57,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-10-14 23:51:57,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:57,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:57,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:51:57,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:51:57,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1457046300, now seen corresponding path program 1 times [2024-10-14 23:51:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144505916] [2024-10-14 23:51:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:51:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:51:57,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:51:57,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144505916] [2024-10-14 23:51:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144505916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:51:57,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:51:57,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:51:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812132453] [2024-10-14 23:51:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:51:57,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:51:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:51:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:51:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:51:57,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:51:57,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 122 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-10-14 23:51:57,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:51:57,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:51:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:51:59,805 INFO L124 PetriNetUnfolderBase]: 15609/23934 cut-off events. [2024-10-14 23:51:59,805 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2024-10-14 23:51:59,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47025 conditions, 23934 events. 15609/23934 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150335 event pairs, 13528 based on Foata normal form. 2/17797 useless extension candidates. Maximal degree in co-relation 46950. Up to 22911 conditions per place. [2024-10-14 23:51:59,936 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 98 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-14 23:51:59,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 127 transitions, 491 flow [2024-10-14 23:51:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:51:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:51:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-14 23:51:59,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4198473282442748 [2024-10-14 23:51:59,940 INFO L175 Difference]: Start difference. First operand has 113 places, 122 transitions, 277 flow. Second operand 4 states and 220 transitions. [2024-10-14 23:51:59,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 127 transitions, 491 flow [2024-10-14 23:51:59,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:51:59,945 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 295 flow [2024-10-14 23:51:59,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=117, PETRI_TRANSITIONS=123} [2024-10-14 23:51:59,946 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2024-10-14 23:51:59,946 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 295 flow [2024-10-14 23:51:59,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-10-14 23:51:59,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:51:59,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:51:59,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:51:59,948 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:51:59,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:51:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash -128467849, now seen corresponding path program 1 times [2024-10-14 23:51:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:51:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044343780] [2024-10-14 23:51:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:51:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:51:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:00,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:00,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044343780] [2024-10-14 23:52:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044343780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:00,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:52:00,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:52:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938987424] [2024-10-14 23:52:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:00,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:52:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:52:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:52:00,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 131 [2024-10-14 23:52:00,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:00,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:00,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 131 [2024-10-14 23:52:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:02,328 INFO L124 PetriNetUnfolderBase]: 15608/23929 cut-off events. [2024-10-14 23:52:02,328 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-10-14 23:52:02,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47023 conditions, 23929 events. 15608/23929 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150173 event pairs, 13528 based on Foata normal form. 1/17793 useless extension candidates. Maximal degree in co-relation 46985. Up to 22895 conditions per place. [2024-10-14 23:52:02,457 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 94 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-10-14 23:52:02,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 488 flow [2024-10-14 23:52:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:52:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:52:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-10-14 23:52:02,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38740458015267176 [2024-10-14 23:52:02,460 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 295 flow. Second operand 4 states and 203 transitions. [2024-10-14 23:52:02,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 488 flow [2024-10-14 23:52:02,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 482 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 23:52:02,463 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 294 flow [2024-10-14 23:52:02,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-10-14 23:52:02,464 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-10-14 23:52:02,465 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 294 flow [2024-10-14 23:52:02,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:02,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:02,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:02,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:52:02,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 350260247, now seen corresponding path program 1 times [2024-10-14 23:52:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056712894] [2024-10-14 23:52:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056712894] [2024-10-14 23:52:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056712894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:52:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511791975] [2024-10-14 23:52:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:52:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:52:02,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:52:02,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:52:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:02,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 23:52:02,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:52:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:02,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:52:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511791975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:02,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:52:02,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-14 23:52:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570300460] [2024-10-14 23:52:02,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:02,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:52:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:52:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:52:02,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 131 [2024-10-14 23:52:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:02,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 131 [2024-10-14 23:52:02,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:04,930 INFO L124 PetriNetUnfolderBase]: 15608/23927 cut-off events. [2024-10-14 23:52:04,930 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-10-14 23:52:04,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47024 conditions, 23927 events. 15608/23927 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150295 event pairs, 13528 based on Foata normal form. 2/17792 useless extension candidates. Maximal degree in co-relation 46979. Up to 22899 conditions per place. [2024-10-14 23:52:05,265 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 90 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-10-14 23:52:05,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 478 flow [2024-10-14 23:52:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:52:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:52:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-10-14 23:52:05,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3969465648854962 [2024-10-14 23:52:05,268 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 294 flow. Second operand 4 states and 208 transitions. [2024-10-14 23:52:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 478 flow [2024-10-14 23:52:05,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 470 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:52:05,271 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 290 flow [2024-10-14 23:52:05,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2024-10-14 23:52:05,272 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2024-10-14 23:52:05,272 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 290 flow [2024-10-14 23:52:05,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:05,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:05,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:05,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 23:52:05,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 23:52:05,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:05,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2026833265, now seen corresponding path program 1 times [2024-10-14 23:52:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837536883] [2024-10-14 23:52:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:05,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837536883] [2024-10-14 23:52:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837536883] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:52:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811255648] [2024-10-14 23:52:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:05,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:52:05,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:52:05,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:52:05,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:52:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:05,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:52:05,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:52:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:05,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:52:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:05,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811255648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:52:05,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:52:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:52:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056024884] [2024-10-14 23:52:05,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:52:05,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:52:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:52:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:52:05,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:52:05,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 290 flow. Second operand has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 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) [2024-10-14 23:52:05,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:05,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:52:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:07,734 INFO L124 PetriNetUnfolderBase]: 15610/23951 cut-off events. [2024-10-14 23:52:07,734 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-10-14 23:52:07,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47067 conditions, 23951 events. 15610/23951 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150510 event pairs, 13528 based on Foata normal form. 3/17817 useless extension candidates. Maximal degree in co-relation 47023. Up to 22905 conditions per place. [2024-10-14 23:52:07,874 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 99 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2024-10-14 23:52:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 544 flow [2024-10-14 23:52:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:52:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:52:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2024-10-14 23:52:07,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34242093784078514 [2024-10-14 23:52:07,876 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 290 flow. Second operand 7 states and 314 transitions. [2024-10-14 23:52:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 544 flow [2024-10-14 23:52:07,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 133 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:52:07,879 INFO L231 Difference]: Finished difference. Result has 124 places, 125 transitions, 336 flow [2024-10-14 23:52:07,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=124, PETRI_TRANSITIONS=125} [2024-10-14 23:52:07,879 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2024-10-14 23:52:07,880 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 125 transitions, 336 flow [2024-10-14 23:52:07,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 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) [2024-10-14 23:52:07,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:07,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:07,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:52:08,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 23:52:08,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:08,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 452924471, now seen corresponding path program 1 times [2024-10-14 23:52:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202932773] [2024-10-14 23:52:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:52:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202932773] [2024-10-14 23:52:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202932773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:08,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:52:08,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:52:08,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533148334] [2024-10-14 23:52:08,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:08,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:52:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:52:08,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:52:08,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:52:08,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 125 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:08,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:08,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:52:08,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:10,814 INFO L124 PetriNetUnfolderBase]: 17842/27478 cut-off events. [2024-10-14 23:52:10,815 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-10-14 23:52:10,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53615 conditions, 27478 events. 17842/27478 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 185668 event pairs, 7605 based on Foata normal form. 98/20914 useless extension candidates. Maximal degree in co-relation 53566. Up to 19004 conditions per place. [2024-10-14 23:52:10,992 INFO L140 encePairwiseOnDemand]: 122/131 looper letters, 170 selfloop transitions, 6 changer transitions 1/200 dead transitions. [2024-10-14 23:52:10,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 200 transitions, 846 flow [2024-10-14 23:52:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:52:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:52:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-10-14 23:52:10,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2024-10-14 23:52:10,994 INFO L175 Difference]: Start difference. First operand has 124 places, 125 transitions, 336 flow. Second operand 3 states and 263 transitions. [2024-10-14 23:52:10,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 200 transitions, 846 flow [2024-10-14 23:52:10,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 200 transitions, 836 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 23:52:10,998 INFO L231 Difference]: Finished difference. Result has 125 places, 126 transitions, 358 flow [2024-10-14 23:52:10,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2024-10-14 23:52:10,999 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2024-10-14 23:52:10,999 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 358 flow [2024-10-14 23:52:10,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:11,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:11,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:11,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:52:11,000 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:11,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1538161035, now seen corresponding path program 1 times [2024-10-14 23:52:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:11,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618169210] [2024-10-14 23:52:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:52:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618169210] [2024-10-14 23:52:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618169210] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:52:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060175943] [2024-10-14 23:52:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:11,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:52:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:52:11,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:52:11,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:52:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:11,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:52:11,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:52:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:52:11,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:52:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:52:11,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060175943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:52:11,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:52:11,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2024-10-14 23:52:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635743643] [2024-10-14 23:52:11,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:52:11,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 23:52:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 23:52:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:52:11,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 131 [2024-10-14 23:52:11,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 358 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 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) [2024-10-14 23:52:11,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:11,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 131 [2024-10-14 23:52:11,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:14,298 INFO L124 PetriNetUnfolderBase]: 15548/24059 cut-off events. [2024-10-14 23:52:14,298 INFO L125 PetriNetUnfolderBase]: For 5376/5376 co-relation queries the response was YES. [2024-10-14 23:52:14,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50333 conditions, 24059 events. 15548/24059 cut-off events. For 5376/5376 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 161819 event pairs, 6519 based on Foata normal form. 1029/20096 useless extension candidates. Maximal degree in co-relation 50282. Up to 15604 conditions per place. [2024-10-14 23:52:14,446 INFO L140 encePairwiseOnDemand]: 118/131 looper letters, 236 selfloop transitions, 13 changer transitions 2/270 dead transitions. [2024-10-14 23:52:14,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 270 transitions, 1147 flow [2024-10-14 23:52:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 23:52:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 23:52:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2024-10-14 23:52:14,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35877862595419846 [2024-10-14 23:52:14,448 INFO L175 Difference]: Start difference. First operand has 125 places, 126 transitions, 358 flow. Second operand 9 states and 423 transitions. [2024-10-14 23:52:14,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 270 transitions, 1147 flow [2024-10-14 23:52:14,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 270 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:52:14,458 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 377 flow [2024-10-14 23:52:14,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-10-14 23:52:14,459 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 18 predicate places. [2024-10-14 23:52:14,459 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 377 flow [2024-10-14 23:52:14,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 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) [2024-10-14 23:52:14,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:14,459 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:14,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:52:14,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 23:52:14,660 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:14,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1904927924, now seen corresponding path program 1 times [2024-10-14 23:52:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:14,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727883271] [2024-10-14 23:52:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 23:52:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:14,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727883271] [2024-10-14 23:52:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727883271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:52:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:52:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143645021] [2024-10-14 23:52:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:14,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:52:14,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:52:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:52:14,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:52:14,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:14,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:14,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:52:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:16,444 INFO L124 PetriNetUnfolderBase]: 13331/20559 cut-off events. [2024-10-14 23:52:16,444 INFO L125 PetriNetUnfolderBase]: For 5000/6037 co-relation queries the response was YES. [2024-10-14 23:52:16,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44056 conditions, 20559 events. 13331/20559 cut-off events. For 5000/6037 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 127952 event pairs, 11565 based on Foata normal form. 1/17184 useless extension candidates. Maximal degree in co-relation 44002. Up to 19715 conditions per place. [2024-10-14 23:52:16,611 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 91 selfloop transitions, 9 changer transitions 0/124 dead transitions. [2024-10-14 23:52:16,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 575 flow [2024-10-14 23:52:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:52:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:52:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-10-14 23:52:16,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40076335877862596 [2024-10-14 23:52:16,613 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 377 flow. Second operand 4 states and 210 transitions. [2024-10-14 23:52:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 575 flow [2024-10-14 23:52:16,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 558 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 23:52:16,618 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 384 flow [2024-10-14 23:52:16,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-10-14 23:52:16,619 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2024-10-14 23:52:16,619 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 384 flow [2024-10-14 23:52:16,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:16,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:16,619 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:16,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:52:16,620 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:16,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 11485839, now seen corresponding path program 2 times [2024-10-14 23:52:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134640157] [2024-10-14 23:52:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:16,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 23:52:16,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:16,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134640157] [2024-10-14 23:52:16,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134640157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:52:16,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109302420] [2024-10-14 23:52:16,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:52:16,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:52:16,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:52:16,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:52:16,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:52:17,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:52:17,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:52:17,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:52:17,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:52:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 23:52:17,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:52:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 23:52:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109302420] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:52:17,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:52:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-14 23:52:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139045570] [2024-10-14 23:52:17,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:52:17,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:52:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:52:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:52:17,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 131 [2024-10-14 23:52:17,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 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) [2024-10-14 23:52:17,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:17,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 131 [2024-10-14 23:52:17,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:19,314 INFO L124 PetriNetUnfolderBase]: 13331/20558 cut-off events. [2024-10-14 23:52:19,314 INFO L125 PetriNetUnfolderBase]: For 4840/5877 co-relation queries the response was YES. [2024-10-14 23:52:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42920 conditions, 20558 events. 13331/20558 cut-off events. For 4840/5877 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 127909 event pairs, 11565 based on Foata normal form. 1/17183 useless extension candidates. Maximal degree in co-relation 42865. Up to 19703 conditions per place. [2024-10-14 23:52:19,461 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 96 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-10-14 23:52:19,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 592 flow [2024-10-14 23:52:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:52:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:52:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-14 23:52:19,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3683206106870229 [2024-10-14 23:52:19,463 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 384 flow. Second operand 4 states and 193 transitions. [2024-10-14 23:52:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 592 flow [2024-10-14 23:52:19,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 572 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:52:19,467 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 389 flow [2024-10-14 23:52:19,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-10-14 23:52:19,468 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 13 predicate places. [2024-10-14 23:52:19,468 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 389 flow [2024-10-14 23:52:19,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 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) [2024-10-14 23:52:19,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:19,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:19,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 23:52:19,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:52:19,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:19,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2456664, now seen corresponding path program 1 times [2024-10-14 23:52:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:19,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553751735] [2024-10-14 23:52:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 23:52:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553751735] [2024-10-14 23:52:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553751735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:19,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:52:19,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:52:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572031641] [2024-10-14 23:52:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:19,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:52:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:52:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:52:19,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-14 23:52:19,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:19,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:19,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-14 23:52:19,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:52:21,959 INFO L124 PetriNetUnfolderBase]: 13376/20597 cut-off events. [2024-10-14 23:52:21,960 INFO L125 PetriNetUnfolderBase]: For 1662/1662 co-relation queries the response was YES. [2024-10-14 23:52:22,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43093 conditions, 20597 events. 13376/20597 cut-off events. For 1662/1662 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 125771 event pairs, 9346 based on Foata normal form. 1/17238 useless extension candidates. Maximal degree in co-relation 43007. Up to 16113 conditions per place. [2024-10-14 23:52:22,094 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 161 selfloop transitions, 8 changer transitions 0/192 dead transitions. [2024-10-14 23:52:22,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 192 transitions, 859 flow [2024-10-14 23:52:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:52:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:52:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2024-10-14 23:52:22,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6361323155216285 [2024-10-14 23:52:22,097 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 389 flow. Second operand 3 states and 250 transitions. [2024-10-14 23:52:22,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 192 transitions, 859 flow [2024-10-14 23:52:22,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 192 transitions, 848 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 23:52:22,114 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 402 flow [2024-10-14 23:52:22,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2024-10-14 23:52:22,115 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 12 predicate places. [2024-10-14 23:52:22,116 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 402 flow [2024-10-14 23:52:22,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:52:22,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:22,116 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:22,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 23:52:22,117 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-14 23:52:22,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1934081085, now seen corresponding path program 1 times [2024-10-14 23:52:22,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:22,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074600185] [2024-10-14 23:52:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:22,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:52:22,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:52:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:52:22,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:52:22,208 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:52:22,208 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-14 23:52:22,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-10-14 23:52:22,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-10-14 23:52:22,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-10-14 23:52:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-10-14 23:52:22,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-10-14 23:52:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-10-14 23:52:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-10-14 23:52:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-10-14 23:52:22,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-10-14 23:52:22,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-10-14 23:52:22,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-10-14 23:52:22,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 23:52:22,213 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:52:22,214 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:52:22,214 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 23:52:22,291 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:52:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 175 transitions, 377 flow [2024-10-14 23:52:22,315 INFO L124 PetriNetUnfolderBase]: 37/244 cut-off events. [2024-10-14 23:52:22,315 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 23:52:22,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 244 events. 37/244 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 970 event pairs, 1 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 166. Up to 12 conditions per place. [2024-10-14 23:52:22,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 175 transitions, 377 flow [2024-10-14 23:52:22,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 175 transitions, 377 flow [2024-10-14 23:52:22,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:52:22,326 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;@356acb9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:52:22,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 23:52:22,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:52:22,327 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-14 23:52:22,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:52:22,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:52:22,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:52:22,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:52:22,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:52:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash -450733049, now seen corresponding path program 1 times [2024-10-14 23:52:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:52:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957459309] [2024-10-14 23:52:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:52:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:52:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:52:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:52:22,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:52:22,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957459309] [2024-10-14 23:52:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957459309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:52:22,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:52:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:52:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004183520] [2024-10-14 23:52:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:52:22,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:52:22,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:52:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:52:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:52:22,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 175 [2024-10-14 23:52:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 175 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-10-14 23:52:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:52:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 175 [2024-10-14 23:52:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand