./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/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:46:03,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:46:03,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:46:03,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:46:03,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:46:03,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:46:03,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:46:03,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:46:03,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:46:03,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:46:03,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:46:03,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:46:03,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:46:03,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:46:03,239 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:46:03,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:46:03,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:46:03,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:46:03,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:46:03,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:46:03,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:46:03,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:46:03,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:46:03,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:46:03,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:46:03,243 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:46:03,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:46:03,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:46:03,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:46:03,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:46:03,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:46:03,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:46:03,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:46:03,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:46:03,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:03,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:46:03,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:46:03,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:46:03,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:46:03,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:46:03,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:46:03,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:46:03,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:46:03,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:46:03,247 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-10-11 23:46:03,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:46:03,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:46:03,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:46:03,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:46:03,542 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:46:03,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-10-11 23:46:04,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:46:05,175 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:46:05,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-10-11 23:46:05,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/eb8e3fb57/876b392b0aff4e8fa3d746ca551cf73d/FLAG5563ac0b7 [2024-10-11 23:46:05,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/eb8e3fb57/876b392b0aff4e8fa3d746ca551cf73d [2024-10-11 23:46:05,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:46:05,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:46:05,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:05,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:46:05,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:46:05,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e6e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05, skipping insertion in model container [2024-10-11 23:46:05,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:46:05,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:05,717 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:46:05,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:05,836 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:46:05,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05 WrapperNode [2024-10-11 23:46:05,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:05,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:05,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:46:05,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:46:05,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,887 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 212 [2024-10-11 23:46:05,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:05,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:46:05,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:46:05,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:46:05,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,934 INFO L175 MemorySlicer]: Split 34 memory accesses to 4 slices as follows [2, 5, 3, 24]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 13 writes are split as follows [0, 0, 2, 11]. [2024-10-11 23:46:05,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:46:05,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:46:05,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:46:05,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:46:05,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (1/1) ... [2024-10-11 23:46:05,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:05,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:05,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:46:06,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:46:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 23:46:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 23:46:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:46:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:46:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:46:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:46:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:46:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:46:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:46:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:46:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:46:06,049 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:46:06,178 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:46:06,180 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:46:06,420 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:46:06,421 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:46:06,652 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:46:06,653 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:46:06,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:06 BoogieIcfgContainer [2024-10-11 23:46:06,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:46:06,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:46:06,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:46:06,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:46:06,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:46:05" (1/3) ... [2024-10-11 23:46:06,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2232c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:06, skipping insertion in model container [2024-10-11 23:46:06,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:05" (2/3) ... [2024-10-11 23:46:06,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2232c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:06, skipping insertion in model container [2024-10-11 23:46:06,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:06" (3/3) ... [2024-10-11 23:46:06,661 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-10-11 23:46:06,676 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:46:06,676 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 23:46:06,676 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:46:06,740 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:46:06,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-10-11 23:46:06,809 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-10-11 23:46:06,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:46:06,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 173 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-10-11 23:46:06,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-10-11 23:46:06,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-10-11 23:46:06,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:46:06,830 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;@2451e6f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:46:06,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 23:46:06,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:46:06,837 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-10-11 23:46:06,837 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:46:06,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:06,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:06,838 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:06,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1248388963, now seen corresponding path program 1 times [2024-10-11 23:46:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812067731] [2024-10-11 23:46:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:07,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:07,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812067731] [2024-10-11 23:46:07,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812067731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:07,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:07,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:46:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598409138] [2024-10-11 23:46:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:07,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:07,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:07,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2024-10-11 23:46:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:07,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:07,899 INFO L124 PetriNetUnfolderBase]: 1017/2063 cut-off events. [2024-10-11 23:46:07,899 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-11 23:46:07,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 2063 events. 1017/2063 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13163 event pairs, 213 based on Foata normal form. 42/1739 useless extension candidates. Maximal degree in co-relation 3578. Up to 1122 conditions per place. [2024-10-11 23:46:07,925 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-10-11 23:46:07,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 408 flow [2024-10-11 23:46:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:46:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:46:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-10-11 23:46:07,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754098360655738 [2024-10-11 23:46:07,938 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 5 states and 206 transitions. [2024-10-11 23:46:07,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 408 flow [2024-10-11 23:46:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:07,948 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 164 flow [2024-10-11 23:46:07,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-10-11 23:46:07,955 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2024-10-11 23:46:07,955 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 164 flow [2024-10-11 23:46:07,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2024-10-11 23:46:07,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:07,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:07,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:46:07,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:07,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -346042883, now seen corresponding path program 1 times [2024-10-11 23:46:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145283760] [2024-10-11 23:46:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145283760] [2024-10-11 23:46:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145283760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:08,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:46:08,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594689087] [2024-10-11 23:46:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:08,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:46:08,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-10-11 23:46:08,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 164 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) [2024-10-11 23:46:08,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:08,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-10-11 23:46:08,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:08,172 INFO L124 PetriNetUnfolderBase]: 473/1087 cut-off events. [2024-10-11 23:46:08,172 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-11 23:46:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 1087 events. 473/1087 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6361 event pairs, 266 based on Foata normal form. 27/998 useless extension candidates. Maximal degree in co-relation 2027. Up to 444 conditions per place. [2024-10-11 23:46:08,177 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 39 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2024-10-11 23:46:08,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 270 flow [2024-10-11 23:46:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-10-11 23:46:08,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-10-11 23:46:08,180 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 164 flow. Second operand 3 states and 120 transitions. [2024-10-11 23:46:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 270 flow [2024-10-11 23:46:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 264 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:08,184 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 153 flow [2024-10-11 23:46:08,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-10-11 23:46:08,186 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-10-11 23:46:08,186 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 153 flow [2024-10-11 23:46:08,186 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) [2024-10-11 23:46:08,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:08,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:08,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:46:08,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:08,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 634398350, now seen corresponding path program 1 times [2024-10-11 23:46:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:08,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707335123] [2024-10-11 23:46:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707335123] [2024-10-11 23:46:08,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707335123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:08,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:08,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:08,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988150636] [2024-10-11 23:46:08,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:08,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:46:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:46:08,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:46:08,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:08,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:08,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:08,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:08,552 INFO L124 PetriNetUnfolderBase]: 505/1127 cut-off events. [2024-10-11 23:46:08,552 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-10-11 23:46:08,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1127 events. 505/1127 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6479 event pairs, 179 based on Foata normal form. 12/1025 useless extension candidates. Maximal degree in co-relation 1888. Up to 476 conditions per place. [2024-10-11 23:46:08,557 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 71 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-10-11 23:46:08,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 403 flow [2024-10-11 23:46:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:46:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:46:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-10-11 23:46:08,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5956284153005464 [2024-10-11 23:46:08,558 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 153 flow. Second operand 6 states and 218 transitions. [2024-10-11 23:46:08,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 403 flow [2024-10-11 23:46:08,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:08,561 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 184 flow [2024-10-11 23:46:08,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-11 23:46:08,561 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-10-11 23:46:08,561 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 184 flow [2024-10-11 23:46:08,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:08,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:08,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:08,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:46:08,562 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:08,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1808486007, now seen corresponding path program 1 times [2024-10-11 23:46:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:08,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791335427] [2024-10-11 23:46:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791335427] [2024-10-11 23:46:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791335427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:08,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344604542] [2024-10-11 23:46:08,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:08,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:08,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:08,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:08,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:08,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:08,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:08,778 INFO L124 PetriNetUnfolderBase]: 440/980 cut-off events. [2024-10-11 23:46:08,778 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-11 23:46:08,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 980 events. 440/980 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5203 event pairs, 293 based on Foata normal form. 24/933 useless extension candidates. Maximal degree in co-relation 1845. Up to 591 conditions per place. [2024-10-11 23:46:08,787 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-10-11 23:46:08,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 325 flow [2024-10-11 23:46:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-11 23:46:08,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-10-11 23:46:08,791 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 184 flow. Second operand 4 states and 151 transitions. [2024-10-11 23:46:08,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 325 flow [2024-10-11 23:46:08,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:08,794 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 192 flow [2024-10-11 23:46:08,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-10-11 23:46:08,798 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-10-11 23:46:08,799 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 192 flow [2024-10-11 23:46:08,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:08,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:08,799 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:08,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:46:08,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:08,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -536245484, now seen corresponding path program 1 times [2024-10-11 23:46:08,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:08,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879153925] [2024-10-11 23:46:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:08,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879153925] [2024-10-11 23:46:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879153925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 23:46:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018335657] [2024-10-11 23:46:08,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:08,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:46:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:46:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:46:08,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-10-11 23:46:08,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-10-11 23:46:08,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:08,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-10-11 23:46:08,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:09,268 INFO L124 PetriNetUnfolderBase]: 398/938 cut-off events. [2024-10-11 23:46:09,269 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-11 23:46:09,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 938 events. 398/938 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5009 event pairs, 118 based on Foata normal form. 12/895 useless extension candidates. Maximal degree in co-relation 1677. Up to 457 conditions per place. [2024-10-11 23:46:09,274 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/86 dead transitions. [2024-10-11 23:46:09,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 369 flow [2024-10-11 23:46:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:46:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:46:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-10-11 23:46:09,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-10-11 23:46:09,276 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 192 flow. Second operand 5 states and 187 transitions. [2024-10-11 23:46:09,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 369 flow [2024-10-11 23:46:09,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:09,281 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 196 flow [2024-10-11 23:46:09,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-10-11 23:46:09,284 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-10-11 23:46:09,284 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 196 flow [2024-10-11 23:46:09,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-10-11 23:46:09,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:09,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:09,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:46:09,285 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:09,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1666498322, now seen corresponding path program 1 times [2024-10-11 23:46:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943233560] [2024-10-11 23:46:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943233560] [2024-10-11 23:46:09,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943233560] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:09,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170782483] [2024-10-11 23:46:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:09,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:09,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:46:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:09,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 23:46:09,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:09,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-11 23:46:09,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 50 [2024-10-11 23:46:10,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 66 [2024-10-11 23:46:10,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 150 [2024-10-11 23:46:10,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 439 treesize of output 358 [2024-10-11 23:46:10,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 819 treesize of output 713 [2024-10-11 23:46:10,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 859 treesize of output 733 [2024-10-11 23:46:10,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 939 treesize of output 773 [2024-10-11 23:46:10,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 838 [2024-10-11 23:46:10,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1293 treesize of output 1019 [2024-10-11 23:46:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:10,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:20,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170782483] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:20,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:20,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2024-10-11 23:46:20,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541310120] [2024-10-11 23:46:20,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:20,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 23:46:20,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 23:46:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=300, Unknown=3, NotChecked=0, Total=380 [2024-10-11 23:46:21,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-10-11 23:46:21,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 196 flow. Second operand has 20 states, 20 states have (on average 22.05) internal successors, (441), 20 states have internal predecessors, (441), 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) [2024-10-11 23:46:21,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:21,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-10-11 23:46:21,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:23,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:46:24,143 INFO L124 PetriNetUnfolderBase]: 885/1865 cut-off events. [2024-10-11 23:46:24,143 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-11 23:46:24,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 1865 events. 885/1865 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10541 event pairs, 123 based on Foata normal form. 24/1756 useless extension candidates. Maximal degree in co-relation 3481. Up to 486 conditions per place. [2024-10-11 23:46:24,152 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 146 selfloop transitions, 17 changer transitions 3/184 dead transitions. [2024-10-11 23:46:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 184 transitions, 833 flow [2024-10-11 23:46:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 23:46:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 23:46:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 448 transitions. [2024-10-11 23:46:24,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2024-10-11 23:46:24,154 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 196 flow. Second operand 14 states and 448 transitions. [2024-10-11 23:46:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 184 transitions, 833 flow [2024-10-11 23:46:24,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 184 transitions, 823 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 23:46:24,158 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 288 flow [2024-10-11 23:46:24,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=288, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-10-11 23:46:24,159 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-10-11 23:46:24,159 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 288 flow [2024-10-11 23:46:24,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.05) internal successors, (441), 20 states have internal predecessors, (441), 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) [2024-10-11 23:46:24,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:24,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:24,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 23:46:24,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:24,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:24,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash 121841052, now seen corresponding path program 1 times [2024-10-11 23:46:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512642208] [2024-10-11 23:46:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:24,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512642208] [2024-10-11 23:46:24,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512642208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617862363] [2024-10-11 23:46:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:24,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:24,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:24,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:24,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 23:46:24,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:24,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-11 23:46:24,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 50 [2024-10-11 23:46:25,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 66 [2024-10-11 23:46:25,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 150 [2024-10-11 23:46:25,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 439 treesize of output 358 [2024-10-11 23:46:25,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 819 treesize of output 713 [2024-10-11 23:46:25,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1293 treesize of output 1019 [2024-10-11 23:46:25,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 859 treesize of output 733 [2024-10-11 23:46:25,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 838 [2024-10-11 23:46:25,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 939 treesize of output 773 [2024-10-11 23:46:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:25,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:26,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617862363] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:26,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:26,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-10-11 23:46:26,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714652257] [2024-10-11 23:46:26,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:26,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 23:46:26,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 23:46:26,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-11 23:46:26,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2024-10-11 23:46:26,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 288 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 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) [2024-10-11 23:46:26,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:26,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2024-10-11 23:46:26,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:28,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:46:30,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:46:32,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:46:34,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:46:35,082 INFO L124 PetriNetUnfolderBase]: 825/1805 cut-off events. [2024-10-11 23:46:35,082 INFO L125 PetriNetUnfolderBase]: For 791/791 co-relation queries the response was YES. [2024-10-11 23:46:35,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 1805 events. 825/1805 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10392 event pairs, 123 based on Foata normal form. 24/1744 useless extension candidates. Maximal degree in co-relation 3884. Up to 498 conditions per place. [2024-10-11 23:46:35,089 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 143 selfloop transitions, 16 changer transitions 3/182 dead transitions. [2024-10-11 23:46:35,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 883 flow [2024-10-11 23:46:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 23:46:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 23:46:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 458 transitions. [2024-10-11 23:46:35,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5362997658079626 [2024-10-11 23:46:35,091 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 288 flow. Second operand 14 states and 458 transitions. [2024-10-11 23:46:35,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 883 flow [2024-10-11 23:46:35,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 182 transitions, 853 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-11 23:46:35,095 INFO L231 Difference]: Finished difference. Result has 94 places, 73 transitions, 307 flow [2024-10-11 23:46:35,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=307, PETRI_PLACES=94, PETRI_TRANSITIONS=73} [2024-10-11 23:46:35,096 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-10-11 23:46:35,096 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 73 transitions, 307 flow [2024-10-11 23:46:35,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 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) [2024-10-11 23:46:35,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:35,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:35,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:46:35,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:35,302 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:35,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1125153919, now seen corresponding path program 1 times [2024-10-11 23:46:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591887305] [2024-10-11 23:46:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:35,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591887305] [2024-10-11 23:46:35,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591887305] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371129698] [2024-10-11 23:46:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:35,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:35,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:35,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:46:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:35,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 23:46:35,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:35,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2024-10-11 23:46:36,028 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-10-11 23:46:36,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-10-11 23:46:36,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-10-11 23:46:36,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-10-11 23:46:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:36,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:36,333 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-10-11 23:46:36,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 85 [2024-10-11 23:46:36,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 23:46:36,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 82 [2024-10-11 23:46:36,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-11 23:46:36,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 23:46:36,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-11 23:46:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371129698] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:36,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2024-10-11 23:46:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364748524] [2024-10-11 23:46:36,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:36,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 23:46:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 23:46:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-10-11 23:46:36,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-10-11 23:46:36,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 73 transitions, 307 flow. Second operand has 23 states, 23 states have (on average 24.08695652173913) internal successors, (554), 23 states have internal predecessors, (554), 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) [2024-10-11 23:46:36,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:36,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-10-11 23:46:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:37,485 INFO L124 PetriNetUnfolderBase]: 1022/2317 cut-off events. [2024-10-11 23:46:37,485 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2024-10-11 23:46:37,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 2317 events. 1022/2317 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13924 event pairs, 163 based on Foata normal form. 84/2274 useless extension candidates. Maximal degree in co-relation 4699. Up to 434 conditions per place. [2024-10-11 23:46:37,498 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 139 selfloop transitions, 29 changer transitions 3/192 dead transitions. [2024-10-11 23:46:37,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 192 transitions, 939 flow [2024-10-11 23:46:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 23:46:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 23:46:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 539 transitions. [2024-10-11 23:46:37,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5197685631629702 [2024-10-11 23:46:37,505 INFO L175 Difference]: Start difference. First operand has 94 places, 73 transitions, 307 flow. Second operand 17 states and 539 transitions. [2024-10-11 23:46:37,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 192 transitions, 939 flow [2024-10-11 23:46:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 192 transitions, 901 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-10-11 23:46:37,511 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 355 flow [2024-10-11 23:46:37,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=355, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-10-11 23:46:37,512 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-10-11 23:46:37,512 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 355 flow [2024-10-11 23:46:37,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.08695652173913) internal successors, (554), 23 states have internal predecessors, (554), 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) [2024-10-11 23:46:37,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:37,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:37,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:46:37,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:37,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:37,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1536247482, now seen corresponding path program 1 times [2024-10-11 23:46:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643191268] [2024-10-11 23:46:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:37,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643191268] [2024-10-11 23:46:37,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643191268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:37,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989356455] [2024-10-11 23:46:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:37,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:37,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:46:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:37,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:37,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:37,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989356455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:37,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:46:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627976713] [2024-10-11 23:46:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:37,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:37,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:37,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:37,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:37,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:37,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:38,246 INFO L124 PetriNetUnfolderBase]: 992/2247 cut-off events. [2024-10-11 23:46:38,247 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2024-10-11 23:46:38,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 2247 events. 992/2247 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 13353 event pairs, 183 based on Foata normal form. 36/2120 useless extension candidates. Maximal degree in co-relation 4648. Up to 1273 conditions per place. [2024-10-11 23:46:38,256 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 77 selfloop transitions, 7 changer transitions 3/108 dead transitions. [2024-10-11 23:46:38,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 596 flow [2024-10-11 23:46:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:46:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:46:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-10-11 23:46:38,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-10-11 23:46:38,261 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 355 flow. Second operand 6 states and 210 transitions. [2024-10-11 23:46:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 596 flow [2024-10-11 23:46:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 108 transitions, 547 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-10-11 23:46:38,265 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 316 flow [2024-10-11 23:46:38,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-10-11 23:46:38,267 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-10-11 23:46:38,267 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 316 flow [2024-10-11 23:46:38,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:38,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:38,268 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:38,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 23:46:38,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 23:46:38,469 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:38,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 379032319, now seen corresponding path program 1 times [2024-10-11 23:46:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071770834] [2024-10-11 23:46:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071770834] [2024-10-11 23:46:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071770834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:38,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:38,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383440465] [2024-10-11 23:46:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:38,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:38,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:38,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 316 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) [2024-10-11 23:46:38,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:38,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:38,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:38,734 INFO L124 PetriNetUnfolderBase]: 947/2170 cut-off events. [2024-10-11 23:46:38,735 INFO L125 PetriNetUnfolderBase]: For 900/900 co-relation queries the response was YES. [2024-10-11 23:46:38,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 2170 events. 947/2170 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12883 event pairs, 508 based on Foata normal form. 36/2065 useless extension candidates. Maximal degree in co-relation 4347. Up to 1018 conditions per place. [2024-10-11 23:46:38,743 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 58 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-10-11 23:46:38,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 482 flow [2024-10-11 23:46:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-11 23:46:38,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5778688524590164 [2024-10-11 23:46:38,744 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 316 flow. Second operand 4 states and 141 transitions. [2024-10-11 23:46:38,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 482 flow [2024-10-11 23:46:38,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 473 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:46:38,747 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 325 flow [2024-10-11 23:46:38,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-10-11 23:46:38,748 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-10-11 23:46:38,748 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 325 flow [2024-10-11 23:46:38,748 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) [2024-10-11 23:46:38,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:38,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:38,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:46:38,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:38,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1888957466, now seen corresponding path program 1 times [2024-10-11 23:46:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418545108] [2024-10-11 23:46:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:38,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418545108] [2024-10-11 23:46:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418545108] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687202817] [2024-10-11 23:46:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:38,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:38,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:38,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:46:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:38,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 23:46:38,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:38,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 23:46:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:38,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687202817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:38,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-11 23:46:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401660748] [2024-10-11 23:46:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:38,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:38,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-10-11 23:46:38,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-11 23:46:38,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:38,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-10-11 23:46:38,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:39,059 INFO L124 PetriNetUnfolderBase]: 684/1737 cut-off events. [2024-10-11 23:46:39,060 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2024-10-11 23:46:39,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 1737 events. 684/1737 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9844 event pairs, 150 based on Foata normal form. 66/1708 useless extension candidates. Maximal degree in co-relation 3403. Up to 998 conditions per place. [2024-10-11 23:46:39,065 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 59 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2024-10-11 23:46:39,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 470 flow [2024-10-11 23:46:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-10-11 23:46:39,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2024-10-11 23:46:39,066 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 325 flow. Second operand 3 states and 118 transitions. [2024-10-11 23:46:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 470 flow [2024-10-11 23:46:39,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:39,069 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 318 flow [2024-10-11 23:46:39,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-10-11 23:46:39,069 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-10-11 23:46:39,070 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 318 flow [2024-10-11 23:46:39,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-11 23:46:39,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:39,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:39,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:46:39,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 23:46:39,271 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:39,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash 475725777, now seen corresponding path program 1 times [2024-10-11 23:46:39,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:39,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862071177] [2024-10-11 23:46:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:39,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:39,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862071177] [2024-10-11 23:46:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862071177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111612146] [2024-10-11 23:46:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:39,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:39,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:39,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:46:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:39,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:46:39,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:39,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:39,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111612146] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:39,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:39,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 23:46:39,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67967031] [2024-10-11 23:46:39,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:39,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:46:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:46:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:46:39,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-11 23:46:39,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 318 flow. Second operand has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:39,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:39,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-11 23:46:39,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:39,688 INFO L124 PetriNetUnfolderBase]: 540/1357 cut-off events. [2024-10-11 23:46:39,688 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2024-10-11 23:46:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 1357 events. 540/1357 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 6868 event pairs, 240 based on Foata normal form. 20/1299 useless extension candidates. Maximal degree in co-relation 2723. Up to 508 conditions per place. [2024-10-11 23:46:39,696 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 72 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2024-10-11 23:46:39,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 533 flow [2024-10-11 23:46:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-10-11 23:46:39,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480093676814989 [2024-10-11 23:46:39,698 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 318 flow. Second operand 7 states and 234 transitions. [2024-10-11 23:46:39,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 533 flow [2024-10-11 23:46:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 525 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:39,701 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 333 flow [2024-10-11 23:46:39,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-11 23:46:39,702 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-10-11 23:46:39,702 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 333 flow [2024-10-11 23:46:39,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:39,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:39,703 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:39,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:46:39,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 23:46:39,904 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-11 23:46:39,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:39,905 INFO L85 PathProgramCache]: Analyzing trace with hash -958041465, now seen corresponding path program 1 times [2024-10-11 23:46:39,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:39,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244529624] [2024-10-11 23:46:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244529624] [2024-10-11 23:46:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244529624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303480001] [2024-10-11 23:46:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:40,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:40,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:46:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:40,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-11 23:46:40,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:40,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-11 23:46:40,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 45 [2024-10-11 23:46:40,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 50 [2024-10-11 23:46:40,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 87 [2024-10-11 23:46:44,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 205 [2024-10-11 23:46:57,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 550 treesize of output 441 [2024-10-11 23:47:05,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1929 treesize of output 1544 [2024-10-11 23:47:13,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6840 treesize of output 5529 [2024-10-11 23:47:38,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23138 treesize of output 18121