./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/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:31:06,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:31:06,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:31:06,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:31:06,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:31:06,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:31:06,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:31:06,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:31:06,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:31:06,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:31:06,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:31:06,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:31:06,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:31:06,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:31:06,236 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:31:06,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:31:06,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:31:06,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:31:06,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:31:06,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:31:06,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:31:06,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:31:06,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:31:06,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:31:06,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:31:06,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:31:06,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:31:06,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:31:06,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:31:06,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:31:06,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:31:06,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:31:06,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:31:06,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:31:06,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:31:06,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:31:06,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:31:06,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:31:06,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:31:06,249 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-10-13 16:31:06,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:31:06,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:31:06,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:31:06,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:31:06,455 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:31:06,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-10-13 16:31:07,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:31:07,894 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:31:07,895 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-10-13 16:31:07,911 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32507d16f/ea835dcbf43347bf9e986f64500975a1/FLAG10a2699d2 [2024-10-13 16:31:07,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32507d16f/ea835dcbf43347bf9e986f64500975a1 [2024-10-13 16:31:07,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:31:07,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:31:07,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:31:07,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:31:07,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:31:07,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:31:07" (1/1) ... [2024-10-13 16:31:07,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103455c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:07, skipping insertion in model container [2024-10-13 16:31:07,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:31:07" (1/1) ... [2024-10-13 16:31:07,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:31:08,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:31:08,329 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:31:08,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:31:08,505 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:31:08,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08 WrapperNode [2024-10-13 16:31:08,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:31:08,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:31:08,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:31:08,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:31:08,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,558 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 158 [2024-10-13 16:31:08,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:31:08,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:31:08,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:31:08,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:31:08,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,598 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-13 16:31:08,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:31:08,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:31:08,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:31:08,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:31:08,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (1/1) ... [2024-10-13 16:31:08,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:31:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:08,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:31:08,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:31:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 16:31:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 16:31:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 16:31:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 16:31:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:31:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:31:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:31:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:31:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:31:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:31:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:31:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:31:08,738 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:31:08,873 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:31:08,875 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:31:09,041 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:31:09,042 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:31:09,148 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:31:09,148 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:31:09,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:31:09 BoogieIcfgContainer [2024-10-13 16:31:09,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:31:09,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:31:09,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:31:09,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:31:09,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:31:07" (1/3) ... [2024-10-13 16:31:09,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71edc90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:31:09, skipping insertion in model container [2024-10-13 16:31:09,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:31:08" (2/3) ... [2024-10-13 16:31:09,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71edc90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:31:09, skipping insertion in model container [2024-10-13 16:31:09,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:31:09" (3/3) ... [2024-10-13 16:31:09,155 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-10-13 16:31:09,166 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:31:09,166 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:31:09,166 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:31:09,203 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:31:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 16:31:09,247 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-13 16:31:09,248 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:31:09,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-13 16:31:09,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 16:31:09,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-13 16:31:09,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:31:09,264 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;@1a44370a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:31:09,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-13 16:31:09,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:31:09,269 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-13 16:31:09,270 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:31:09,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:09,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:09,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:09,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 27544410, now seen corresponding path program 1 times [2024-10-13 16:31:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442555494] [2024-10-13 16:31:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442555494] [2024-10-13 16:31:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442555494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:09,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:09,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:31:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785995273] [2024-10-13 16:31:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:09,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:09,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:09,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:09,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-13 16:31:09,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:09,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:09,820 INFO L124 PetriNetUnfolderBase]: 730/1443 cut-off events. [2024-10-13 16:31:09,820 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-13 16:31:09,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1443 events. 730/1443 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7566 event pairs, 224 based on Foata normal form. 40/1335 useless extension candidates. Maximal degree in co-relation 2570. Up to 692 conditions per place. [2024-10-13 16:31:09,830 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-13 16:31:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-10-13 16:31:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-13 16:31:09,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:31:09,840 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-10-13 16:31:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-10-13 16:31:09,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:09,845 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-10-13 16:31:09,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-10-13 16:31:09,849 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-13 16:31:09,849 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-10-13 16:31:09,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-13 16:31:09,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:09,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:09,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:31:09,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:09,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash 463532605, now seen corresponding path program 1 times [2024-10-13 16:31:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:09,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826677545] [2024-10-13 16:31:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826677545] [2024-10-13 16:31:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826677545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463505672] [2024-10-13 16:31:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:09,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:09,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:09,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-13 16:31:09,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:09,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:09,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:10,251 INFO L124 PetriNetUnfolderBase]: 1180/2392 cut-off events. [2024-10-13 16:31:10,251 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-13 16:31:10,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2392 events. 1180/2392 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13827 event pairs, 613 based on Foata normal form. 74/2303 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-10-13 16:31:10,264 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-10-13 16:31:10,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-10-13 16:31:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-13 16:31:10,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:31:10,268 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-10-13 16:31:10,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-10-13 16:31:10,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:31:10,272 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-10-13 16:31:10,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-13 16:31:10,273 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-10-13 16:31:10,273 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-10-13 16:31:10,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-13 16:31:10,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:10,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:10,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:31:10,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:10,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 344145023, now seen corresponding path program 1 times [2024-10-13 16:31:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980981157] [2024-10-13 16:31:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980981157] [2024-10-13 16:31:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980981157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137125687] [2024-10-13 16:31:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:10,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:10,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:10,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:31:10,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:10,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:10,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:10,706 INFO L124 PetriNetUnfolderBase]: 1703/3321 cut-off events. [2024-10-13 16:31:10,706 INFO L125 PetriNetUnfolderBase]: For 993/1039 co-relation queries the response was YES. [2024-10-13 16:31:10,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 3321 events. 1703/3321 cut-off events. For 993/1039 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21038 event pairs, 837 based on Foata normal form. 82/3284 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-10-13 16:31:10,724 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-10-13 16:31:10,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-10-13 16:31:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-13 16:31:10,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-13 16:31:10,729 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-10-13 16:31:10,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-10-13 16:31:10,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:10,733 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-10-13 16:31:10,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-13 16:31:10,733 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-13 16:31:10,734 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-10-13 16:31:10,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:31:10,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:10,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:10,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:31:10,734 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:10,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2103671949, now seen corresponding path program 1 times [2024-10-13 16:31:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:10,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086897073] [2024-10-13 16:31:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:10,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086897073] [2024-10-13 16:31:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086897073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:10,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905322947] [2024-10-13 16:31:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:10,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:31:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:31:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:31:10,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 16:31:10,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-13 16:31:10,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:10,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 16:31:10,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:10,970 INFO L124 PetriNetUnfolderBase]: 898/2002 cut-off events. [2024-10-13 16:31:10,970 INFO L125 PetriNetUnfolderBase]: For 981/1077 co-relation queries the response was YES. [2024-10-13 16:31:10,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2002 events. 898/2002 cut-off events. For 981/1077 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11967 event pairs, 285 based on Foata normal form. 76/2030 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-10-13 16:31:10,980 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-13 16:31:10,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-10-13 16:31:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:31:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:31:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-13 16:31:10,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:31:10,981 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-10-13 16:31:10,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-10-13 16:31:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:10,985 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-10-13 16:31:10,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-10-13 16:31:10,986 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-10-13 16:31:10,987 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-10-13 16:31:10,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-13 16:31:10,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:10,988 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:10,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:31:10,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:10,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -612273357, now seen corresponding path program 1 times [2024-10-13 16:31:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:10,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760889240] [2024-10-13 16:31:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:11,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760889240] [2024-10-13 16:31:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760889240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904306282] [2024-10-13 16:31:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:11,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:11,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:11,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:31:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:11,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:11,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:11,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904306282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:11,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:31:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939733275] [2024-10-13 16:31:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:11,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:31:11,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:11,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:11,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:11,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:11,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:11,558 INFO L124 PetriNetUnfolderBase]: 931/2010 cut-off events. [2024-10-13 16:31:11,558 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-10-13 16:31:11,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2010 events. 931/2010 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11432 event pairs, 189 based on Foata normal form. 70/2023 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-10-13 16:31:11,566 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-10-13 16:31:11,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-10-13 16:31:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-10-13 16:31:11,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-10-13 16:31:11,567 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-10-13 16:31:11,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-10-13 16:31:11,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:11,569 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-10-13 16:31:11,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-10-13 16:31:11,570 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-13 16:31:11,570 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-10-13 16:31:11,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:11,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:11,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:11,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:31:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:11,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1446954202, now seen corresponding path program 1 times [2024-10-13 16:31:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882965457] [2024-10-13 16:31:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882965457] [2024-10-13 16:31:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882965457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994161419] [2024-10-13 16:31:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:11,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:11,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:11,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-13 16:31:11,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:11,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:12,037 INFO L124 PetriNetUnfolderBase]: 1173/2605 cut-off events. [2024-10-13 16:31:12,038 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2024-10-13 16:31:12,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2605 events. 1173/2605 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16444 event pairs, 646 based on Foata normal form. 26/2624 useless extension candidates. Maximal degree in co-relation 5210. Up to 1363 conditions per place. [2024-10-13 16:31:12,099 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-10-13 16:31:12,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-10-13 16:31:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-13 16:31:12,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-10-13 16:31:12,100 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-10-13 16:31:12,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-10-13 16:31:12,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:12,106 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-10-13 16:31:12,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-10-13 16:31:12,107 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-10-13 16:31:12,108 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-10-13 16:31:12,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-13 16:31:12,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:12,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:12,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:31:12,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:12,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -36091053, now seen corresponding path program 1 times [2024-10-13 16:31:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244229017] [2024-10-13 16:31:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244229017] [2024-10-13 16:31:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244229017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55220516] [2024-10-13 16:31:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:12,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:12,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:12,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:31:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:31:12,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:12,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55220516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:12,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:12,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:31:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012357415] [2024-10-13 16:31:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:12,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:31:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:31:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:31:12,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:12,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-13 16:31:12,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:12,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:12,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:12,561 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2024-10-13 16:31:12,562 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2024-10-13 16:31:12,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17482 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2024-10-13 16:31:12,576 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-10-13 16:31:12,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2024-10-13 16:31:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 16:31:12,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 16:31:12,577 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2024-10-13 16:31:12,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2024-10-13 16:31:12,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:12,582 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2024-10-13 16:31:12,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-13 16:31:12,583 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-10-13 16:31:12,583 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2024-10-13 16:31:12,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-13 16:31:12,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:12,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:12,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:31:12,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-13 16:31:12,785 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:12,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1800604415, now seen corresponding path program 1 times [2024-10-13 16:31:12,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:12,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488548769] [2024-10-13 16:31:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488548769] [2024-10-13 16:31:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488548769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128986559] [2024-10-13 16:31:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:12,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:12,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:12,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:31:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:12,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128986559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:12,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:12,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:31:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906665262] [2024-10-13 16:31:12,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:12,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:31:12,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:31:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:31:13,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-10-13 16:31:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:13,804 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2024-10-13 16:31:13,805 INFO L125 PetriNetUnfolderBase]: For 8542/8788 co-relation queries the response was YES. [2024-10-13 16:31:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8542/8788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35097 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2024-10-13 16:31:13,835 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-10-13 16:31:13,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2024-10-13 16:31:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:31:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:31:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-10-13 16:31:13,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-13 16:31:13,837 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2024-10-13 16:31:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2024-10-13 16:31:13,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:13,847 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2024-10-13 16:31:13,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-10-13 16:31:13,847 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-10-13 16:31:13,848 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2024-10-13 16:31:13,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-10-13 16:31:13,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:13,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:13,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:31:14,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:14,049 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:14,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1363123713, now seen corresponding path program 1 times [2024-10-13 16:31:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841752060] [2024-10-13 16:31:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841752060] [2024-10-13 16:31:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841752060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:31:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887451403] [2024-10-13 16:31:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:14,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:14,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:14,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-10-13 16:31:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:14,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:14,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:14,631 INFO L124 PetriNetUnfolderBase]: 2796/5802 cut-off events. [2024-10-13 16:31:14,631 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2024-10-13 16:31:14,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5802 events. 2796/5802 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37042 event pairs, 564 based on Foata normal form. 39/5836 useless extension candidates. Maximal degree in co-relation 13945. Up to 3403 conditions per place. [2024-10-13 16:31:14,660 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-10-13 16:31:14,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2024-10-13 16:31:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:31:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:31:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-10-13 16:31:14,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-10-13 16:31:14,662 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2024-10-13 16:31:14,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2024-10-13 16:31:14,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:14,676 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-10-13 16:31:14,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-10-13 16:31:14,677 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-10-13 16:31:14,677 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-10-13 16:31:14,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-10-13 16:31:14,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:14,677 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:14,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:31:14,678 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:14,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1118822150, now seen corresponding path program 1 times [2024-10-13 16:31:14,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:14,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223065285] [2024-10-13 16:31:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:14,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:31:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223065285] [2024-10-13 16:31:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223065285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:14,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:14,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796480496] [2024-10-13 16:31:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:14,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:14,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:14,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:31:14,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:14,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:14,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:15,282 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2024-10-13 16:31:15,283 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-10-13 16:31:15,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42773 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2024-10-13 16:31:15,326 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-10-13 16:31:15,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-10-13 16:31:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:15,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 16:31:15,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 16:31:15,330 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-10-13 16:31:15,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-10-13 16:31:15,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:15,353 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-10-13 16:31:15,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-10-13 16:31:15,354 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-10-13 16:31:15,354 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-10-13 16:31:15,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:31:15,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:15,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:15,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:31:15,355 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:15,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -602794938, now seen corresponding path program 1 times [2024-10-13 16:31:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516954733] [2024-10-13 16:31:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:15,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:15,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516954733] [2024-10-13 16:31:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516954733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565655335] [2024-10-13 16:31:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:15,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:15,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:15,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:31:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:15,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:15,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:15,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565655335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:15,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:15,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:31:15,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33007822] [2024-10-13 16:31:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:15,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:15,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:31:15,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:15,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:15,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:15,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:15,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:16,125 INFO L124 PetriNetUnfolderBase]: 2801/5737 cut-off events. [2024-10-13 16:31:16,125 INFO L125 PetriNetUnfolderBase]: For 13400/13418 co-relation queries the response was YES. [2024-10-13 16:31:16,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17839 conditions, 5737 events. 2801/5737 cut-off events. For 13400/13418 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 36601 event pairs, 159 based on Foata normal form. 178/5734 useless extension candidates. Maximal degree in co-relation 17017. Up to 3376 conditions per place. [2024-10-13 16:31:16,151 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 130 selfloop transitions, 5 changer transitions 0/158 dead transitions. [2024-10-13 16:31:16,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 1359 flow [2024-10-13 16:31:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:31:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:31:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-10-13 16:31:16,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-10-13 16:31:16,153 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 6 states and 181 transitions. [2024-10-13 16:31:16,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 1359 flow [2024-10-13 16:31:16,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 158 transitions, 1323 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:16,168 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 663 flow [2024-10-13 16:31:16,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-10-13 16:31:16,169 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-13 16:31:16,169 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 663 flow [2024-10-13 16:31:16,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:16,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:16,169 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:31:16,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:31:16,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:16,374 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:16,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1506773421, now seen corresponding path program 1 times [2024-10-13 16:31:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67688343] [2024-10-13 16:31:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:31:16,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67688343] [2024-10-13 16:31:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67688343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:16,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341614136] [2024-10-13 16:31:16,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:16,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:16,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:16,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-13 16:31:16,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:16,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:16,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:16,891 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-10-13 16:31:16,891 INFO L125 PetriNetUnfolderBase]: For 12816/12841 co-relation queries the response was YES. [2024-10-13 16:31:16,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12816/12841 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36791 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-10-13 16:31:16,917 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-10-13 16:31:16,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 1215 flow [2024-10-13 16:31:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 16:31:16,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 16:31:16,918 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-10-13 16:31:16,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 1215 flow [2024-10-13 16:31:16,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 135 transitions, 1206 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:31:16,935 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 670 flow [2024-10-13 16:31:16,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=670, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-10-13 16:31:16,936 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-10-13 16:31:16,936 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 670 flow [2024-10-13 16:31:16,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-13 16:31:16,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:16,937 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:16,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:31:16,937 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:16,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1672443283, now seen corresponding path program 1 times [2024-10-13 16:31:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641050635] [2024-10-13 16:31:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:16,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:16,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:16,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641050635] [2024-10-13 16:31:16,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641050635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:16,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:16,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:31:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706790459] [2024-10-13 16:31:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:16,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:17,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:17,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 670 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-10-13 16:31:17,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:17,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:17,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:17,497 INFO L124 PetriNetUnfolderBase]: 2862/5764 cut-off events. [2024-10-13 16:31:17,498 INFO L125 PetriNetUnfolderBase]: For 15016/15016 co-relation queries the response was YES. [2024-10-13 16:31:17,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18646 conditions, 5764 events. 2862/5764 cut-off events. For 15016/15016 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36305 event pairs, 455 based on Foata normal form. 104/5863 useless extension candidates. Maximal degree in co-relation 15627. Up to 3054 conditions per place. [2024-10-13 16:31:17,526 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-10-13 16:31:17,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 1107 flow [2024-10-13 16:31:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-10-13 16:31:17,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-10-13 16:31:17,530 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 670 flow. Second operand 7 states and 162 transitions. [2024-10-13 16:31:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 1107 flow [2024-10-13 16:31:17,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 1083 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:17,549 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 753 flow [2024-10-13 16:31:17,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=753, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-10-13 16:31:17,550 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-13 16:31:17,550 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 753 flow [2024-10-13 16:31:17,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-10-13 16:31:17,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:17,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:17,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:31:17,550 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:17,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 867564175, now seen corresponding path program 1 times [2024-10-13 16:31:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455214495] [2024-10-13 16:31:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455214495] [2024-10-13 16:31:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455214495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774373248] [2024-10-13 16:31:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:17,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:17,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:31:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:17,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:31:17,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:17,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774373248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-10-13 16:31:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827146621] [2024-10-13 16:31:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:17,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:31:17,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:17,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 753 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-10-13 16:31:17,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:17,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:17,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:18,486 INFO L124 PetriNetUnfolderBase]: 2819/5729 cut-off events. [2024-10-13 16:31:18,487 INFO L125 PetriNetUnfolderBase]: For 18154/18154 co-relation queries the response was YES. [2024-10-13 16:31:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18961 conditions, 5729 events. 2819/5729 cut-off events. For 18154/18154 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 36455 event pairs, 651 based on Foata normal form. 114/5838 useless extension candidates. Maximal degree in co-relation 16215. Up to 2849 conditions per place. [2024-10-13 16:31:18,519 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 87 selfloop transitions, 28 changer transitions 8/132 dead transitions. [2024-10-13 16:31:18,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 1244 flow [2024-10-13 16:31:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-10-13 16:31:18,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-10-13 16:31:18,520 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 753 flow. Second operand 7 states and 162 transitions. [2024-10-13 16:31:18,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 1244 flow [2024-10-13 16:31:18,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 132 transitions, 1225 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:18,543 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 875 flow [2024-10-13 16:31:18,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-10-13 16:31:18,543 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-10-13 16:31:18,543 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 875 flow [2024-10-13 16:31:18,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-10-13 16:31:18,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:18,544 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:18,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:31:18,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:31:18,745 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:18,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1301568832, now seen corresponding path program 2 times [2024-10-13 16:31:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:18,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856171915] [2024-10-13 16:31:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:31:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856171915] [2024-10-13 16:31:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856171915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542204537] [2024-10-13 16:31:18,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:31:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:18,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:18,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:31:19,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:31:19,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:19,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:31:19,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:19,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542204537] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:19,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-10-13 16:31:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749005817] [2024-10-13 16:31:19,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:19,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:31:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:31:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:31:19,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:19,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 875 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-13 16:31:19,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:19,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:19,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:20,086 INFO L124 PetriNetUnfolderBase]: 3024/6198 cut-off events. [2024-10-13 16:31:20,087 INFO L125 PetriNetUnfolderBase]: For 25266/25266 co-relation queries the response was YES. [2024-10-13 16:31:20,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21187 conditions, 6198 events. 3024/6198 cut-off events. For 25266/25266 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39340 event pairs, 483 based on Foata normal form. 68/6261 useless extension candidates. Maximal degree in co-relation 18768. Up to 1421 conditions per place. [2024-10-13 16:31:20,125 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-10-13 16:31:20,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 246 transitions, 2280 flow [2024-10-13 16:31:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:31:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:31:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-10-13 16:31:20,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2024-10-13 16:31:20,128 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 875 flow. Second operand 15 states and 359 transitions. [2024-10-13 16:31:20,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 246 transitions, 2280 flow [2024-10-13 16:31:20,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 246 transitions, 2243 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:20,155 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1341 flow [2024-10-13 16:31:20,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1341, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-10-13 16:31:20,157 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-10-13 16:31:20,157 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1341 flow [2024-10-13 16:31:20,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-13 16:31:20,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:20,157 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-13 16:31:20,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:31:20,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:31:20,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:20,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash 993993978, now seen corresponding path program 2 times [2024-10-13 16:31:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124265378] [2024-10-13 16:31:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:20,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124265378] [2024-10-13 16:31:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124265378] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:20,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589784359] [2024-10-13 16:31:20,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:31:20,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:20,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:20,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:20,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:31:20,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:31:20,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:20,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 16:31:20,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589784359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:20,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-13 16:31:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053348030] [2024-10-13 16:31:20,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:20,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:31:20,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:31:20,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:31:20,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:20,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1341 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-10-13 16:31:20,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:20,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:20,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:22,459 INFO L124 PetriNetUnfolderBase]: 5288/10870 cut-off events. [2024-10-13 16:31:22,460 INFO L125 PetriNetUnfolderBase]: For 56023/56023 co-relation queries the response was YES. [2024-10-13 16:31:22,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37807 conditions, 10870 events. 5288/10870 cut-off events. For 56023/56023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 67747 event pairs, 1005 based on Foata normal form. 234/11099 useless extension candidates. Maximal degree in co-relation 30382. Up to 2603 conditions per place. [2024-10-13 16:31:22,525 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2024-10-13 16:31:22,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 442 transitions, 4284 flow [2024-10-13 16:31:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:31:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:31:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2024-10-13 16:31:22,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842013888888888 [2024-10-13 16:31:22,528 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1341 flow. Second operand 24 states and 673 transitions. [2024-10-13 16:31:22,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 442 transitions, 4284 flow [2024-10-13 16:31:22,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 442 transitions, 4260 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:22,585 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 2172 flow [2024-10-13 16:31:22,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2172, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-10-13 16:31:22,585 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-10-13 16:31:22,585 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 2172 flow [2024-10-13 16:31:22,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-10-13 16:31:22,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:22,586 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:22,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:31:22,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:22,790 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:22,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1338732778, now seen corresponding path program 3 times [2024-10-13 16:31:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:22,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506847482] [2024-10-13 16:31:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:22,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:23,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506847482] [2024-10-13 16:31:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506847482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149686538] [2024-10-13 16:31:23,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:31:23,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:23,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:23,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:31:23,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-13 16:31:23,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:23,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:31:23,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:23,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149686538] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:23,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-13 16:31:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263602157] [2024-10-13 16:31:23,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:23,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:31:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:31:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-10-13 16:31:23,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:23,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 2172 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-13 16:31:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:25,845 INFO L124 PetriNetUnfolderBase]: 7243/14769 cut-off events. [2024-10-13 16:31:25,845 INFO L125 PetriNetUnfolderBase]: For 91199/91199 co-relation queries the response was YES. [2024-10-13 16:31:25,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53212 conditions, 14769 events. 7243/14769 cut-off events. For 91199/91199 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98113 event pairs, 767 based on Foata normal form. 108/14872 useless extension candidates. Maximal degree in co-relation 50344. Up to 2506 conditions per place. [2024-10-13 16:31:25,945 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2024-10-13 16:31:25,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 457 transitions, 5157 flow [2024-10-13 16:31:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:31:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:31:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2024-10-13 16:31:25,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-10-13 16:31:25,947 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 2172 flow. Second operand 26 states and 621 transitions. [2024-10-13 16:31:25,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 457 transitions, 5157 flow [2024-10-13 16:31:26,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 457 transitions, 5037 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-10-13 16:31:26,078 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 3434 flow [2024-10-13 16:31:26,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3434, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-10-13 16:31:26,080 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-10-13 16:31:26,080 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 3434 flow [2024-10-13 16:31:26,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-13 16:31:26,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:26,081 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:26,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:31:26,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:31:26,282 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:26,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash -118192390, now seen corresponding path program 4 times [2024-10-13 16:31:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:26,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414722569] [2024-10-13 16:31:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414722569] [2024-10-13 16:31:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414722569] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581931873] [2024-10-13 16:31:26,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:31:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:26,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:26,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:31:26,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:31:26,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:26,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 16:31:26,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:26,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581931873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:27,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-10-13 16:31:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810036900] [2024-10-13 16:31:27,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:27,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 16:31:27,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 16:31:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-10-13 16:31:27,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:27,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 3434 flow. Second operand has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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) [2024-10-13 16:31:27,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:27,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:27,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:30,890 INFO L124 PetriNetUnfolderBase]: 10036/20416 cut-off events. [2024-10-13 16:31:30,891 INFO L125 PetriNetUnfolderBase]: For 158701/158701 co-relation queries the response was YES. [2024-10-13 16:31:30,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76160 conditions, 20416 events. 10036/20416 cut-off events. For 158701/158701 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 141821 event pairs, 971 based on Foata normal form. 218/20629 useless extension candidates. Maximal degree in co-relation 74762. Up to 3481 conditions per place. [2024-10-13 16:31:31,058 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 420 selfloop transitions, 222 changer transitions 0/651 dead transitions. [2024-10-13 16:31:31,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 651 transitions, 7817 flow [2024-10-13 16:31:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 16:31:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-13 16:31:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 882 transitions. [2024-10-13 16:31:31,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-10-13 16:31:31,068 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 3434 flow. Second operand 37 states and 882 transitions. [2024-10-13 16:31:31,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 651 transitions, 7817 flow [2024-10-13 16:31:31,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 651 transitions, 7507 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-10-13 16:31:31,427 INFO L231 Difference]: Finished difference. Result has 208 places, 279 transitions, 5129 flow [2024-10-13 16:31:31,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5129, PETRI_PLACES=208, PETRI_TRANSITIONS=279} [2024-10-13 16:31:31,432 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2024-10-13 16:31:31,433 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 279 transitions, 5129 flow [2024-10-13 16:31:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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) [2024-10-13 16:31:31,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:31,433 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:31,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:31,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:31:31,634 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:31,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1427679914, now seen corresponding path program 5 times [2024-10-13 16:31:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:31,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219542794] [2024-10-13 16:31:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219542794] [2024-10-13 16:31:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219542794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382086038] [2024-10-13 16:31:32,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 16:31:32,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:32,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:32,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:31:32,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-13 16:31:32,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:32,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 16:31:32,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:32,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382086038] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:32,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2024-10-13 16:31:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858255214] [2024-10-13 16:31:32,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:32,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-13 16:31:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-13 16:31:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2024-10-13 16:31:32,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:32,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 5129 flow. Second operand has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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) [2024-10-13 16:31:32,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:32,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:39,567 INFO L124 PetriNetUnfolderBase]: 14157/28765 cut-off events. [2024-10-13 16:31:39,567 INFO L125 PetriNetUnfolderBase]: For 260051/260051 co-relation queries the response was YES. [2024-10-13 16:31:39,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110057 conditions, 28765 events. 14157/28765 cut-off events. For 260051/260051 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 205101 event pairs, 1285 based on Foata normal form. 316/29076 useless extension candidates. Maximal degree in co-relation 108276. Up to 4918 conditions per place. [2024-10-13 16:31:39,851 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 542 selfloop transitions, 323 changer transitions 0/874 dead transitions. [2024-10-13 16:31:39,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 874 transitions, 11259 flow [2024-10-13 16:31:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-13 16:31:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-13 16:31:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1143 transitions. [2024-10-13 16:31:39,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2024-10-13 16:31:39,853 INFO L175 Difference]: Start difference. First operand has 208 places, 279 transitions, 5129 flow. Second operand 48 states and 1143 transitions. [2024-10-13 16:31:39,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 874 transitions, 11259 flow [2024-10-13 16:31:40,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 874 transitions, 10702 flow, removed 265 selfloop flow, removed 6 redundant places. [2024-10-13 16:31:40,593 INFO L231 Difference]: Finished difference. Result has 261 places, 385 transitions, 7617 flow [2024-10-13 16:31:40,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7617, PETRI_PLACES=261, PETRI_TRANSITIONS=385} [2024-10-13 16:31:40,594 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2024-10-13 16:31:40,594 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 385 transitions, 7617 flow [2024-10-13 16:31:40,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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) [2024-10-13 16:31:40,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:40,595 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:40,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:40,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:40,799 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:40,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 768173178, now seen corresponding path program 1 times [2024-10-13 16:31:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410483705] [2024-10-13 16:31:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:40,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 203 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-13 16:31:41,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:41,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410483705] [2024-10-13 16:31:41,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410483705] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:41,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39005727] [2024-10-13 16:31:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:41,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:41,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:41,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:31:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:41,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 16:31:41,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 197 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-13 16:31:41,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 197 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-13 16:31:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39005727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:41,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2024-10-13 16:31:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991909195] [2024-10-13 16:31:41,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:41,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:31:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:31:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:31:41,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:41,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 385 transitions, 7617 flow. Second operand has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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) [2024-10-13 16:31:41,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:41,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:41,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:52,920 INFO L124 PetriNetUnfolderBase]: 24095/49397 cut-off events. [2024-10-13 16:31:52,920 INFO L125 PetriNetUnfolderBase]: For 461949/461949 co-relation queries the response was YES. [2024-10-13 16:31:53,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192706 conditions, 49397 events. 24095/49397 cut-off events. For 461949/461949 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 409265 event pairs, 3127 based on Foata normal form. 324/49716 useless extension candidates. Maximal degree in co-relation 185440. Up to 10645 conditions per place. [2024-10-13 16:31:53,631 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 441 selfloop transitions, 604 changer transitions 0/1054 dead transitions. [2024-10-13 16:31:53,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1054 transitions, 19428 flow [2024-10-13 16:31:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 16:31:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 16:31:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 651 transitions. [2024-10-13 16:31:53,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-10-13 16:31:53,633 INFO L175 Difference]: Start difference. First operand has 261 places, 385 transitions, 7617 flow. Second operand 27 states and 651 transitions. [2024-10-13 16:31:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1054 transitions, 19428 flow [2024-10-13 16:31:55,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1054 transitions, 18666 flow, removed 323 selfloop flow, removed 10 redundant places. [2024-10-13 16:31:55,696 INFO L231 Difference]: Finished difference. Result has 290 places, 784 transitions, 17285 flow [2024-10-13 16:31:55,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17285, PETRI_PLACES=290, PETRI_TRANSITIONS=784} [2024-10-13 16:31:55,697 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 244 predicate places. [2024-10-13 16:31:55,697 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 784 transitions, 17285 flow [2024-10-13 16:31:55,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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) [2024-10-13 16:31:55,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:55,698 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:55,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:31:55,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:55,899 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:55,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 176947876, now seen corresponding path program 6 times [2024-10-13 16:31:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:55,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027067505] [2024-10-13 16:31:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:55,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027067505] [2024-10-13 16:31:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027067505] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306592240] [2024-10-13 16:31:56,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 16:31:56,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:56,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:56,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:56,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:31:56,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-13 16:31:56,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:56,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 16:31:56,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:56,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306592240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:57,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-10-13 16:31:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912222136] [2024-10-13 16:31:57,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:57,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-13 16:31:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-13 16:31:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-10-13 16:31:57,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:57,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 784 transitions, 17285 flow. Second operand has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 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) [2024-10-13 16:31:57,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:57,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:57,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:32:17,556 INFO L124 PetriNetUnfolderBase]: 30584/62244 cut-off events. [2024-10-13 16:32:17,557 INFO L125 PetriNetUnfolderBase]: For 709351/709351 co-relation queries the response was YES. [2024-10-13 16:32:18,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248043 conditions, 62244 events. 30584/62244 cut-off events. For 709351/709351 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 512188 event pairs, 3379 based on Foata normal form. 392/62631 useless extension candidates. Maximal degree in co-relation 233216. Up to 10803 conditions per place. [2024-10-13 16:32:18,638 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 744 selfloop transitions, 833 changer transitions 0/1586 dead transitions. [2024-10-13 16:32:18,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1586 transitions, 27235 flow [2024-10-13 16:32:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-13 16:32:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-10-13 16:32:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1404 transitions. [2024-10-13 16:32:18,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4957627118644068 [2024-10-13 16:32:18,641 INFO L175 Difference]: Start difference. First operand has 290 places, 784 transitions, 17285 flow. Second operand 59 states and 1404 transitions. [2024-10-13 16:32:18,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1586 transitions, 27235 flow [2024-10-13 16:32:22,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1586 transitions, 26631 flow, removed 297 selfloop flow, removed 3 redundant places. [2024-10-13 16:32:22,597 INFO L231 Difference]: Finished difference. Result has 362 places, 971 transitions, 23060 flow [2024-10-13 16:32:22,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=16658, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=23060, PETRI_PLACES=362, PETRI_TRANSITIONS=971} [2024-10-13 16:32:22,598 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 316 predicate places. [2024-10-13 16:32:22,598 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 971 transitions, 23060 flow [2024-10-13 16:32:22,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 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) [2024-10-13 16:32:22,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:32:22,599 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:32:22,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 16:32:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 16:32:22,804 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:32:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:32:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash 967772729, now seen corresponding path program 2 times [2024-10-13 16:32:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:32:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555667812] [2024-10-13 16:32:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:32:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:32:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:32:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 16:32:23,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:32:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555667812] [2024-10-13 16:32:23,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555667812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:32:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939373265] [2024-10-13 16:32:23,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:32:23,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:32:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:32:23,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:32:23,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:32:24,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:32:24,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:32:24,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 16:32:24,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:32:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:32:24,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:32:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:32:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939373265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:32:24,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:32:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 42 [2024-10-13 16:32:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397900680] [2024-10-13 16:32:24,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:32:24,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 16:32:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:32:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 16:32:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 16:32:24,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:32:24,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 971 transitions, 23060 flow. Second operand has 44 states, 44 states have (on average 17.227272727272727) internal successors, (758), 44 states have internal predecessors, (758), 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) [2024-10-13 16:32:24,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:32:24,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:32:24,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand