./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.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/queue_longer.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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:30:19,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:30:19,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:30:19,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:30:19,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:30:19,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:30:19,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:30:19,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:30:19,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:30:19,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:30:19,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:30:19,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:30:19,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:30:19,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:30:19,243 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:30:19,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:30:19,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:30:19,244 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:30:19,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:30:19,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:30:19,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:30:19,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:30:19,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:30:19,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:30:19,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:30:19,247 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:30:19,247 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:30:19,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:30:19,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:30:19,248 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:30:19,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:30:19,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:30:19,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:30:19,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:30:19,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:19,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:30:19,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:30:19,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:30:19,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:30:19,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:30:19,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:30:19,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:30:19,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:30:19,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:30:19,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2024-10-13 16:30:19,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:30:19,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:30:19,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:30:19,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:30:19,518 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:30:19,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2024-10-13 16:30:20,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:30:21,256 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:30:21,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2024-10-13 16:30:21,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79647cbe1/2bd1bd6b855b48edbab5d8b907684505/FLAG178ae8ae5 [2024-10-13 16:30:21,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79647cbe1/2bd1bd6b855b48edbab5d8b907684505 [2024-10-13 16:30:21,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:30:21,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:30:21,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:21,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:30:21,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:30:21,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:21" (1/1) ... [2024-10-13 16:30:21,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4499ac97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:21, skipping insertion in model container [2024-10-13 16:30:21,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:21" (1/1) ... [2024-10-13 16:30:21,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:30:21,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:21,931 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:30:21,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:22,037 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:30:22,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22 WrapperNode [2024-10-13 16:30:22,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:22,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:22,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:30:22,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:30:22,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,111 INFO L138 Inliner]: procedures = 274, calls = 56, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 263 [2024-10-13 16:30:22,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:22,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:30:22,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:30:22,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:30:22,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,149 INFO L175 MemorySlicer]: Split 43 memory accesses to 4 slices as follows [2, 32, 5, 4]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 18 writes are split as follows [0, 15, 0, 3]. [2024-10-13 16:30:22,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:30:22,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:30:22,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:30:22,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:30:22,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:22,222 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 16:30:22,226 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 16:30:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 16:30:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 16:30:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:30:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:30:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:30:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:30:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:30:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:30:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:30:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:30:22,282 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 16:30:22,477 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:30:22,479 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:30:22,827 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:30:22,827 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:30:23,125 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:30:23,127 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:30:23,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:23 BoogieIcfgContainer [2024-10-13 16:30:23,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:30:23,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:30:23,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:30:23,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:30:23,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:21" (1/3) ... [2024-10-13 16:30:23,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2812af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:23, skipping insertion in model container [2024-10-13 16:30:23,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22" (2/3) ... [2024-10-13 16:30:23,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2812af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:23, skipping insertion in model container [2024-10-13 16:30:23,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:23" (3/3) ... [2024-10-13 16:30:23,137 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2024-10-13 16:30:23,156 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:30:23,156 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-13 16:30:23,156 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:30:23,238 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:30:23,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-10-13 16:30:23,315 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-10-13 16:30:23,315 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:30:23,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-10-13 16:30:23,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-10-13 16:30:23,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-10-13 16:30:23,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:30:23,343 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;@57f64083, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:30:23,343 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-13 16:30:23,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:30:23,349 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-13 16:30:23,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:30:23,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:23,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:30:23,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:23,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -593102147, now seen corresponding path program 1 times [2024-10-13 16:30:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734259462] [2024-10-13 16:30:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:24,018 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 16:30:24,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734259462] [2024-10-13 16:30:24,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734259462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:24,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:24,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860594834] [2024-10-13 16:30:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:24,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:24,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:24,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 16:30:24,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:24,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:24,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:24,630 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-10-13 16:30:24,630 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-13 16:30:24,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 2581 events. 1242/2581 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16513 event pairs, 264 based on Foata normal form. 60/2265 useless extension candidates. Maximal degree in co-relation 4506. Up to 1757 conditions per place. [2024-10-13 16:30:24,658 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-10-13 16:30:24,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 423 flow [2024-10-13 16:30:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-10-13 16:30:24,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6072289156626506 [2024-10-13 16:30:24,675 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 5 states and 252 transitions. [2024-10-13 16:30:24,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 423 flow [2024-10-13 16:30:24,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:24,686 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 206 flow [2024-10-13 16:30:24,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-13 16:30:24,694 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-13 16:30:24,694 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 206 flow [2024-10-13 16:30:24,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 16:30:24,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:24,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:24,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:30:24,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:24,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 390145210, now seen corresponding path program 1 times [2024-10-13 16:30:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211674248] [2024-10-13 16:30:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:24,886 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 16:30:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:24,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211674248] [2024-10-13 16:30:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211674248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:24,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:24,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173986645] [2024-10-13 16:30:24,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:24,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:24,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:24,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:30:24,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:24,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:24,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:25,378 INFO L124 PetriNetUnfolderBase]: 1326/2695 cut-off events. [2024-10-13 16:30:25,378 INFO L125 PetriNetUnfolderBase]: For 348/354 co-relation queries the response was YES. [2024-10-13 16:30:25,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5141 conditions, 2695 events. 1326/2695 cut-off events. For 348/354 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17130 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4879. Up to 1807 conditions per place. [2024-10-13 16:30:25,416 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-10-13 16:30:25,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 143 transitions, 572 flow [2024-10-13 16:30:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:30:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:30:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-10-13 16:30:25,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-10-13 16:30:25,420 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 206 flow. Second operand 7 states and 340 transitions. [2024-10-13 16:30:25,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 143 transitions, 572 flow [2024-10-13 16:30:25,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 572 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:30:25,426 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 275 flow [2024-10-13 16:30:25,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=275, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-10-13 16:30:25,427 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-10-13 16:30:25,427 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 275 flow [2024-10-13 16:30:25,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:30:25,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:25,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:25,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:30:25,429 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:25,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash -743114382, now seen corresponding path program 1 times [2024-10-13 16:30:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581663737] [2024-10-13 16:30:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:25,494 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 16:30:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581663737] [2024-10-13 16:30:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581663737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308943899] [2024-10-13 16:30:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:25,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:25,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:25,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 16:30:25,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:25,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:25,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:25,798 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-10-13 16:30:25,799 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-10-13 16:30:25,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 2371 events. 1023/2371 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13907 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4318. Up to 884 conditions per place. [2024-10-13 16:30:25,811 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-13 16:30:25,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 366 flow [2024-10-13 16:30:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-10-13 16:30:25,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-10-13 16:30:25,813 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 275 flow. Second operand 3 states and 175 transitions. [2024-10-13 16:30:25,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 366 flow [2024-10-13 16:30:25,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-13 16:30:25,817 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 167 flow [2024-10-13 16:30:25,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-10-13 16:30:25,818 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -2 predicate places. [2024-10-13 16:30:25,819 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 167 flow [2024-10-13 16:30:25,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 16:30:25,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:25,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:25,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:30:25,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:25,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1168355787, now seen corresponding path program 1 times [2024-10-13 16:30:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:25,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133886883] [2024-10-13 16:30:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:25,880 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 16:30:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133886883] [2024-10-13 16:30:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133886883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744699268] [2024-10-13 16:30:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:25,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:25,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-13 16:30:25,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 16:30:25,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:25,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-13 16:30:25,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:26,441 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-10-13 16:30:26,442 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-13 16:30:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 26961 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-10-13 16:30:26,465 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-10-13 16:30:26,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 143 transitions, 550 flow [2024-10-13 16:30:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-13 16:30:26,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-10-13 16:30:26,467 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-10-13 16:30:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 143 transitions, 550 flow [2024-10-13 16:30:26,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:26,470 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 188 flow [2024-10-13 16:30:26,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-13 16:30:26,471 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-13 16:30:26,472 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 188 flow [2024-10-13 16:30:26,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 16:30:26,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:26,472 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 16:30:26,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:30:26,473 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:26,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash -60220822, now seen corresponding path program 1 times [2024-10-13 16:30:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:26,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849823551] [2024-10-13 16:30:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:26,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:26,759 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 16:30:26,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849823551] [2024-10-13 16:30:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849823551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:30:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444102404] [2024-10-13 16:30:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:26,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:26,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:26,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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 16:30:26,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:26,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:26,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:27,231 INFO L124 PetriNetUnfolderBase]: 1715/3860 cut-off events. [2024-10-13 16:30:27,231 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-10-13 16:30:27,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 3860 events. 1715/3860 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25054 event pairs, 279 based on Foata normal form. 0/3418 useless extension candidates. Maximal degree in co-relation 7356. Up to 2409 conditions per place. [2024-10-13 16:30:27,253 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 74 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-10-13 16:30:27,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 464 flow [2024-10-13 16:30:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-10-13 16:30:27,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-10-13 16:30:27,255 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 188 flow. Second operand 5 states and 251 transitions. [2024-10-13 16:30:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 464 flow [2024-10-13 16:30:27,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:27,258 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 194 flow [2024-10-13 16:30:27,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-10-13 16:30:27,259 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2024-10-13 16:30:27,259 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 194 flow [2024-10-13 16:30:27,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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 16:30:27,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:27,260 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:27,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:30:27,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:27,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2052147989, now seen corresponding path program 1 times [2024-10-13 16:30:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:27,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263509029] [2024-10-13 16:30:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:27,334 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 16:30:27,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263509029] [2024-10-13 16:30:27,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263509029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:27,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547104700] [2024-10-13 16:30:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:27,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:27,338 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 16:30:27,339 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 16:30:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:27,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:30:27,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:27,507 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 16:30:27,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:30:27,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547104700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:27,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:30:27,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:30:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833816950] [2024-10-13 16:30:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:27,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:30:27,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-13 16:30:27,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 16:30:27,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:27,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-13 16:30:27,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:28,021 INFO L124 PetriNetUnfolderBase]: 1912/3875 cut-off events. [2024-10-13 16:30:28,021 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-10-13 16:30:28,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3875 events. 1912/3875 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 23695 event pairs, 118 based on Foata normal form. 70/3579 useless extension candidates. Maximal degree in co-relation 7845. Up to 1906 conditions per place. [2024-10-13 16:30:28,048 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 99 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-13 16:30:28,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 536 flow [2024-10-13 16:30:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-13 16:30:28,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-10-13 16:30:28,050 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 194 flow. Second operand 4 states and 232 transitions. [2024-10-13 16:30:28,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 536 flow [2024-10-13 16:30:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:30:28,058 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 190 flow [2024-10-13 16:30:28,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-10-13 16:30:28,059 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-10-13 16:30:28,059 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 190 flow [2024-10-13 16:30:28,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 16:30:28,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:28,060 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 16:30:28,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:30:28,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:30:28,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:28,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:28,265 INFO L85 PathProgramCache]: Analyzing trace with hash 746321772, now seen corresponding path program 1 times [2024-10-13 16:30:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211361746] [2024-10-13 16:30:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:28,889 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 16:30:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:28,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211361746] [2024-10-13 16:30:28,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211361746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:28,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:28,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:30:28,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759449097] [2024-10-13 16:30:28,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:28,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:30:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:30:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:30:28,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:28,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 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 16:30:28,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:28,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:28,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:29,515 INFO L124 PetriNetUnfolderBase]: 2088/4452 cut-off events. [2024-10-13 16:30:29,516 INFO L125 PetriNetUnfolderBase]: For 1764/1830 co-relation queries the response was YES. [2024-10-13 16:30:29,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9092 conditions, 4452 events. 2088/4452 cut-off events. For 1764/1830 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 29085 event pairs, 404 based on Foata normal form. 22/3979 useless extension candidates. Maximal degree in co-relation 9084. Up to 2096 conditions per place. [2024-10-13 16:30:29,536 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 111 selfloop transitions, 7 changer transitions 0/145 dead transitions. [2024-10-13 16:30:29,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 145 transitions, 701 flow [2024-10-13 16:30:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:30:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:30:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 330 transitions. [2024-10-13 16:30:29,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5679862306368331 [2024-10-13 16:30:29,538 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 190 flow. Second operand 7 states and 330 transitions. [2024-10-13 16:30:29,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 145 transitions, 701 flow [2024-10-13 16:30:29,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 145 transitions, 641 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:29,543 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 216 flow [2024-10-13 16:30:29,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-10-13 16:30:29,544 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2024-10-13 16:30:29,544 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 216 flow [2024-10-13 16:30:29,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 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 16:30:29,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:29,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:29,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:30:29,545 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:29,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash 807922598, now seen corresponding path program 1 times [2024-10-13 16:30:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645245229] [2024-10-13 16:30:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:29,584 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 16:30:29,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:29,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645245229] [2024-10-13 16:30:29,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645245229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929054957] [2024-10-13 16:30:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:29,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:29,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-13 16:30:29,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 16:30:29,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:29,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-13 16:30:29,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:30,061 INFO L124 PetriNetUnfolderBase]: 1999/4229 cut-off events. [2024-10-13 16:30:30,061 INFO L125 PetriNetUnfolderBase]: For 952/1044 co-relation queries the response was YES. [2024-10-13 16:30:30,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 4229 events. 1999/4229 cut-off events. For 952/1044 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27399 event pairs, 349 based on Foata normal form. 38/3953 useless extension candidates. Maximal degree in co-relation 8560. Up to 1995 conditions per place. [2024-10-13 16:30:30,085 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 98 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-10-13 16:30:30,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 602 flow [2024-10-13 16:30:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-13 16:30:30,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-10-13 16:30:30,089 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 216 flow. Second operand 4 states and 232 transitions. [2024-10-13 16:30:30,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 602 flow [2024-10-13 16:30:30,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:30,094 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 222 flow [2024-10-13 16:30:30,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-10-13 16:30:30,095 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2024-10-13 16:30:30,096 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 222 flow [2024-10-13 16:30:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 16:30:30,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:30,097 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 16:30:30,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:30:30,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:30,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1661139235, now seen corresponding path program 1 times [2024-10-13 16:30:30,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:30,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52504143] [2024-10-13 16:30:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:30,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:30,815 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 16:30:30,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52504143] [2024-10-13 16:30:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52504143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481084937] [2024-10-13 16:30:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:30,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-10-13 16:30:30,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 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 16:30:30,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:30,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-10-13 16:30:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:31,507 INFO L124 PetriNetUnfolderBase]: 2223/4643 cut-off events. [2024-10-13 16:30:31,508 INFO L125 PetriNetUnfolderBase]: For 2875/2875 co-relation queries the response was YES. [2024-10-13 16:30:31,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10133 conditions, 4643 events. 2223/4643 cut-off events. For 2875/2875 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30274 event pairs, 444 based on Foata normal form. 22/4255 useless extension candidates. Maximal degree in co-relation 10122. Up to 2448 conditions per place. [2024-10-13 16:30:31,531 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 129 selfloop transitions, 8 changer transitions 2/164 dead transitions. [2024-10-13 16:30:31,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 164 transitions, 882 flow [2024-10-13 16:30:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:30:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:30:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-10-13 16:30:31,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-10-13 16:30:31,533 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 222 flow. Second operand 9 states and 375 transitions. [2024-10-13 16:30:31,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 164 transitions, 882 flow [2024-10-13 16:30:31,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 164 transitions, 822 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:31,539 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 223 flow [2024-10-13 16:30:31,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-10-13 16:30:31,540 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-10-13 16:30:31,540 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 223 flow [2024-10-13 16:30:31,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 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 16:30:31,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:31,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:31,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:30:31,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:31,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -44322257, now seen corresponding path program 1 times [2024-10-13 16:30:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82894147] [2024-10-13 16:30:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:31,590 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 16:30:31,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:31,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82894147] [2024-10-13 16:30:31,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82894147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:31,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:31,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:31,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983462482] [2024-10-13 16:30:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:31,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:31,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:31,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 16:30:31,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:31,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:31,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:32,283 INFO L124 PetriNetUnfolderBase]: 2829/5809 cut-off events. [2024-10-13 16:30:32,283 INFO L125 PetriNetUnfolderBase]: For 2571/2581 co-relation queries the response was YES. [2024-10-13 16:30:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12573 conditions, 5809 events. 2829/5809 cut-off events. For 2571/2581 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39937 event pairs, 1541 based on Foata normal form. 144/5567 useless extension candidates. Maximal degree in co-relation 12561. Up to 3623 conditions per place. [2024-10-13 16:30:32,325 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 92 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-10-13 16:30:32,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 120 transitions, 568 flow [2024-10-13 16:30:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-13 16:30:32,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6596385542168675 [2024-10-13 16:30:32,327 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 223 flow. Second operand 4 states and 219 transitions. [2024-10-13 16:30:32,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 120 transitions, 568 flow [2024-10-13 16:30:32,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 552 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:30:32,334 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 238 flow [2024-10-13 16:30:32,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-10-13 16:30:32,335 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-10-13 16:30:32,335 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 238 flow [2024-10-13 16:30:32,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 16:30:32,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:32,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:32,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:30:32,336 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:32,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1373004120, now seen corresponding path program 1 times [2024-10-13 16:30:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865593837] [2024-10-13 16:30:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:32,832 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 16:30:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865593837] [2024-10-13 16:30:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865593837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:32,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548397036] [2024-10-13 16:30:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:32,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:32,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:32,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:32,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 16:30:32,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:32,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:33,603 INFO L124 PetriNetUnfolderBase]: 2825/5927 cut-off events. [2024-10-13 16:30:33,603 INFO L125 PetriNetUnfolderBase]: For 2572/2638 co-relation queries the response was YES. [2024-10-13 16:30:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13313 conditions, 5927 events. 2825/5927 cut-off events. For 2572/2638 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41389 event pairs, 484 based on Foata normal form. 44/5601 useless extension candidates. Maximal degree in co-relation 13298. Up to 2530 conditions per place. [2024-10-13 16:30:33,638 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 147 selfloop transitions, 14 changer transitions 2/190 dead transitions. [2024-10-13 16:30:33,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 190 transitions, 988 flow [2024-10-13 16:30:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-10-13 16:30:33,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555421686746988 [2024-10-13 16:30:33,641 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 238 flow. Second operand 10 states and 461 transitions. [2024-10-13 16:30:33,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 190 transitions, 988 flow [2024-10-13 16:30:33,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 190 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:33,649 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 309 flow [2024-10-13 16:30:33,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=309, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-10-13 16:30:33,650 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-10-13 16:30:33,650 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 309 flow [2024-10-13 16:30:33,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 16:30:33,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:33,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:33,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:30:33,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:33,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash 386546034, now seen corresponding path program 1 times [2024-10-13 16:30:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139359051] [2024-10-13 16:30:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:34,025 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 16:30:34,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:34,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139359051] [2024-10-13 16:30:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139359051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:34,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:34,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327944568] [2024-10-13 16:30:34,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:34,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:34,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:34,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:34,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 16:30:34,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:34,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:34,791 INFO L124 PetriNetUnfolderBase]: 2825/5927 cut-off events. [2024-10-13 16:30:34,792 INFO L125 PetriNetUnfolderBase]: For 3533/3599 co-relation queries the response was YES. [2024-10-13 16:30:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14531 conditions, 5927 events. 2825/5927 cut-off events. For 3533/3599 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41384 event pairs, 484 based on Foata normal form. 44/5809 useless extension candidates. Maximal degree in co-relation 14514. Up to 2682 conditions per place. [2024-10-13 16:30:34,838 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 147 selfloop transitions, 14 changer transitions 2/190 dead transitions. [2024-10-13 16:30:34,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 190 transitions, 1050 flow [2024-10-13 16:30:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 460 transitions. [2024-10-13 16:30:34,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-10-13 16:30:34,841 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 309 flow. Second operand 10 states and 460 transitions. [2024-10-13 16:30:34,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 190 transitions, 1050 flow [2024-10-13 16:30:34,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 190 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:30:34,902 INFO L231 Difference]: Finished difference. Result has 105 places, 84 transitions, 335 flow [2024-10-13 16:30:34,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=105, PETRI_TRANSITIONS=84} [2024-10-13 16:30:34,904 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-10-13 16:30:34,904 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 84 transitions, 335 flow [2024-10-13 16:30:34,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 16:30:34,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:34,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:34,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:30:34,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:34,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1145090277, now seen corresponding path program 1 times [2024-10-13 16:30:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877283271] [2024-10-13 16:30:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:35,006 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 16:30:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:35,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877283271] [2024-10-13 16:30:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877283271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:35,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766995450] [2024-10-13 16:30:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:35,009 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 16:30:35,010 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 16:30:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:35,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:30:35,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:35,177 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 16:30:35,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:30:35,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766995450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:35,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:30:35,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:30:35,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171193629] [2024-10-13 16:30:35,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:35,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:30:35,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:30:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:35,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:35,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 84 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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 16:30:35,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:35,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:35,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:35,916 INFO L124 PetriNetUnfolderBase]: 2796/5782 cut-off events. [2024-10-13 16:30:35,916 INFO L125 PetriNetUnfolderBase]: For 4277/4277 co-relation queries the response was YES. [2024-10-13 16:30:35,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14827 conditions, 5782 events. 2796/5782 cut-off events. For 4277/4277 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 39505 event pairs, 343 based on Foata normal form. 150/5754 useless extension candidates. Maximal degree in co-relation 14808. Up to 2529 conditions per place. [2024-10-13 16:30:35,954 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 124 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-13 16:30:35,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 154 transitions, 886 flow [2024-10-13 16:30:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:30:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:30:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-10-13 16:30:35,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.606425702811245 [2024-10-13 16:30:35,957 INFO L175 Difference]: Start difference. First operand has 105 places, 84 transitions, 335 flow. Second operand 6 states and 302 transitions. [2024-10-13 16:30:35,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 154 transitions, 886 flow [2024-10-13 16:30:35,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 154 transitions, 867 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:30:35,970 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 323 flow [2024-10-13 16:30:35,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-10-13 16:30:35,971 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2024-10-13 16:30:35,972 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 323 flow [2024-10-13 16:30:35,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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 16:30:35,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:35,972 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:35,990 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 16:30:36,176 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,SelfDestructingSolverStorable12 [2024-10-13 16:30:36,177 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:36,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1138061008, now seen corresponding path program 1 times [2024-10-13 16:30:36,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:36,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689239105] [2024-10-13 16:30:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:36,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:36,239 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 16:30:36,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:36,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689239105] [2024-10-13 16:30:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689239105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:36,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:36,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:36,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47499922] [2024-10-13 16:30:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:36,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:36,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-10-13 16:30:36,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 16:30:36,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:36,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-10-13 16:30:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:37,018 INFO L124 PetriNetUnfolderBase]: 2772/5684 cut-off events. [2024-10-13 16:30:37,019 INFO L125 PetriNetUnfolderBase]: For 4520/4540 co-relation queries the response was YES. [2024-10-13 16:30:37,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 5684 events. 2772/5684 cut-off events. For 4520/4540 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 38282 event pairs, 724 based on Foata normal form. 150/5690 useless extension candidates. Maximal degree in co-relation 14635. Up to 2873 conditions per place. [2024-10-13 16:30:37,057 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 85 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2024-10-13 16:30:37,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 627 flow [2024-10-13 16:30:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-10-13 16:30:37,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993975903614458 [2024-10-13 16:30:37,059 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 323 flow. Second operand 4 states and 199 transitions. [2024-10-13 16:30:37,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 627 flow [2024-10-13 16:30:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 115 transitions, 618 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:30:37,072 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 326 flow [2024-10-13 16:30:37,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-10-13 16:30:37,073 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-10-13 16:30:37,073 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 326 flow [2024-10-13 16:30:37,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 16:30:37,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:37,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:37,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:30:37,074 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:37,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1087901964, now seen corresponding path program 1 times [2024-10-13 16:30:37,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:37,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603464420] [2024-10-13 16:30:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:37,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:37,145 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 16:30:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603464420] [2024-10-13 16:30:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603464420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492058533] [2024-10-13 16:30:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:37,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:37,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:37,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 16:30:37,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:37,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:37,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:37,480 INFO L124 PetriNetUnfolderBase]: 1764/3987 cut-off events. [2024-10-13 16:30:37,481 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2024-10-13 16:30:37,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10668 conditions, 3987 events. 1764/3987 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25944 event pairs, 514 based on Foata normal form. 172/4081 useless extension candidates. Maximal degree in co-relation 10649. Up to 1984 conditions per place. [2024-10-13 16:30:37,505 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 64 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2024-10-13 16:30:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 533 flow [2024-10-13 16:30:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-10-13 16:30:37,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-10-13 16:30:37,507 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 326 flow. Second operand 3 states and 165 transitions. [2024-10-13 16:30:37,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 533 flow [2024-10-13 16:30:37,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 514 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:30:37,516 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 308 flow [2024-10-13 16:30:37,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2024-10-13 16:30:37,517 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-10-13 16:30:37,517 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 308 flow [2024-10-13 16:30:37,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 16:30:37,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:37,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:30:37,518 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1038421454, now seen corresponding path program 1 times [2024-10-13 16:30:37,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226550242] [2024-10-13 16:30:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:38,316 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 16:30:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226550242] [2024-10-13 16:30:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226550242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:38,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702573363] [2024-10-13 16:30:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:38,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:38,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2024-10-13 16:30:38,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 308 flow. Second operand has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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 16:30:38,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:38,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2024-10-13 16:30:38,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:39,486 INFO L124 PetriNetUnfolderBase]: 2920/6132 cut-off events. [2024-10-13 16:30:39,486 INFO L125 PetriNetUnfolderBase]: For 5683/5683 co-relation queries the response was YES. [2024-10-13 16:30:39,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16820 conditions, 6132 events. 2920/6132 cut-off events. For 5683/5683 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 41603 event pairs, 247 based on Foata normal form. 70/6050 useless extension candidates. Maximal degree in co-relation 16800. Up to 1706 conditions per place. [2024-10-13 16:30:39,524 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 208 selfloop transitions, 20 changer transitions 2/250 dead transitions. [2024-10-13 16:30:39,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 250 transitions, 1528 flow [2024-10-13 16:30:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:30:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:30:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 605 transitions. [2024-10-13 16:30:39,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4555722891566265 [2024-10-13 16:30:39,527 INFO L175 Difference]: Start difference. First operand has 100 places, 79 transitions, 308 flow. Second operand 16 states and 605 transitions. [2024-10-13 16:30:39,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 250 transitions, 1528 flow [2024-10-13 16:30:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 250 transitions, 1508 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:39,541 INFO L231 Difference]: Finished difference. Result has 120 places, 90 transitions, 427 flow [2024-10-13 16:30:39,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=427, PETRI_PLACES=120, PETRI_TRANSITIONS=90} [2024-10-13 16:30:39,542 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-10-13 16:30:39,542 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 90 transitions, 427 flow [2024-10-13 16:30:39,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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 16:30:39,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:39,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:39,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:30:39,543 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:39,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1990538165, now seen corresponding path program 1 times [2024-10-13 16:30:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978805286] [2024-10-13 16:30:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:40,141 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 16:30:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978805286] [2024-10-13 16:30:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978805286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:30:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117644951] [2024-10-13 16:30:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:40,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:40,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:40,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 90 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 16:30:40,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:40,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:40,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:40,687 INFO L124 PetriNetUnfolderBase]: 2028/4430 cut-off events. [2024-10-13 16:30:40,688 INFO L125 PetriNetUnfolderBase]: For 5306/5312 co-relation queries the response was YES. [2024-10-13 16:30:40,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12423 conditions, 4430 events. 2028/4430 cut-off events. For 5306/5312 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 28372 event pairs, 336 based on Foata normal form. 36/4386 useless extension candidates. Maximal degree in co-relation 12397. Up to 2134 conditions per place. [2024-10-13 16:30:40,710 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 127 selfloop transitions, 12 changer transitions 2/166 dead transitions. [2024-10-13 16:30:40,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 166 transitions, 1018 flow [2024-10-13 16:30:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 435 transitions. [2024-10-13 16:30:40,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5240963855421686 [2024-10-13 16:30:40,712 INFO L175 Difference]: Start difference. First operand has 120 places, 90 transitions, 427 flow. Second operand 10 states and 435 transitions. [2024-10-13 16:30:40,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 166 transitions, 1018 flow [2024-10-13 16:30:40,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 969 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-10-13 16:30:40,729 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 343 flow [2024-10-13 16:30:40,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=343, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2024-10-13 16:30:40,729 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 35 predicate places. [2024-10-13 16:30:40,729 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 343 flow [2024-10-13 16:30:40,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 16:30:40,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:40,730 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, 1, 1, 1, 1, 1] [2024-10-13 16:30:40,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:30:40,730 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:40,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1565740167, now seen corresponding path program 1 times [2024-10-13 16:30:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617178975] [2024-10-13 16:30:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:40,815 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 16:30:40,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617178975] [2024-10-13 16:30:40,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617178975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:40,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283187790] [2024-10-13 16:30:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:40,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:40,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:40,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 16:30:40,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:40,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:41,182 INFO L124 PetriNetUnfolderBase]: 1680/3802 cut-off events. [2024-10-13 16:30:41,182 INFO L125 PetriNetUnfolderBase]: For 3954/3956 co-relation queries the response was YES. [2024-10-13 16:30:41,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10210 conditions, 3802 events. 1680/3802 cut-off events. For 3954/3956 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 23414 event pairs, 1011 based on Foata normal form. 30/3748 useless extension candidates. Maximal degree in co-relation 10188. Up to 1854 conditions per place. [2024-10-13 16:30:41,204 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 70 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-10-13 16:30:41,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 560 flow [2024-10-13 16:30:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-10-13 16:30:41,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-10-13 16:30:41,209 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 343 flow. Second operand 3 states and 165 transitions. [2024-10-13 16:30:41,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 560 flow [2024-10-13 16:30:41,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 539 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 16:30:41,218 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 321 flow [2024-10-13 16:30:41,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2024-10-13 16:30:41,219 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-10-13 16:30:41,219 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 321 flow [2024-10-13 16:30:41,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 16:30:41,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:41,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:41,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:30:41,220 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:41,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 714965207, now seen corresponding path program 1 times [2024-10-13 16:30:41,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:41,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998346284] [2024-10-13 16:30:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:41,994 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 16:30:41,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998346284] [2024-10-13 16:30:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998346284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:41,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327145410] [2024-10-13 16:30:41,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:41,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:41,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:42,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2024-10-13 16:30:42,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 321 flow. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:42,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:42,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2024-10-13 16:30:42,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:42,705 INFO L124 PetriNetUnfolderBase]: 2033/4377 cut-off events. [2024-10-13 16:30:42,706 INFO L125 PetriNetUnfolderBase]: For 4293/4293 co-relation queries the response was YES. [2024-10-13 16:30:42,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 4377 events. 2033/4377 cut-off events. For 4293/4293 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26812 event pairs, 285 based on Foata normal form. 26/4300 useless extension candidates. Maximal degree in co-relation 11782. Up to 1061 conditions per place. [2024-10-13 16:30:42,720 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 153 selfloop transitions, 14 changer transitions 10/197 dead transitions. [2024-10-13 16:30:42,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 1186 flow [2024-10-13 16:30:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:30:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:30:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 487 transitions. [2024-10-13 16:30:42,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45134383688600554 [2024-10-13 16:30:42,722 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 321 flow. Second operand 13 states and 487 transitions. [2024-10-13 16:30:42,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 1186 flow [2024-10-13 16:30:42,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 197 transitions, 1175 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:42,731 INFO L231 Difference]: Finished difference. Result has 117 places, 81 transitions, 355 flow [2024-10-13 16:30:42,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=355, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2024-10-13 16:30:42,732 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 40 predicate places. [2024-10-13 16:30:42,732 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 355 flow [2024-10-13 16:30:42,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:42,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:42,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:42,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:30:42,733 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:42,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:42,733 INFO L85 PathProgramCache]: Analyzing trace with hash 48102062, now seen corresponding path program 1 times [2024-10-13 16:30:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098290651] [2024-10-13 16:30:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:42,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:43,543 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 16:30:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098290651] [2024-10-13 16:30:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098290651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:43,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777343572] [2024-10-13 16:30:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:43,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-10-13 16:30:43,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 355 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 16:30:43,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:43,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-10-13 16:30:43,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:44,308 INFO L124 PetriNetUnfolderBase]: 2057/4377 cut-off events. [2024-10-13 16:30:44,308 INFO L125 PetriNetUnfolderBase]: For 4759/4761 co-relation queries the response was YES. [2024-10-13 16:30:44,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12138 conditions, 4377 events. 2057/4377 cut-off events. For 4759/4761 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 26481 event pairs, 273 based on Foata normal form. 26/4346 useless extension candidates. Maximal degree in co-relation 12114. Up to 1221 conditions per place. [2024-10-13 16:30:44,336 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 158 selfloop transitions, 17 changer transitions 12/209 dead transitions. [2024-10-13 16:30:44,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 209 transitions, 1286 flow [2024-10-13 16:30:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:30:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:30:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 604 transitions. [2024-10-13 16:30:44,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.485140562248996 [2024-10-13 16:30:44,339 INFO L175 Difference]: Start difference. First operand has 117 places, 81 transitions, 355 flow. Second operand 15 states and 604 transitions. [2024-10-13 16:30:44,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 209 transitions, 1286 flow [2024-10-13 16:30:44,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 209 transitions, 1264 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-10-13 16:30:44,351 INFO L231 Difference]: Finished difference. Result has 124 places, 86 transitions, 399 flow [2024-10-13 16:30:44,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=399, PETRI_PLACES=124, PETRI_TRANSITIONS=86} [2024-10-13 16:30:44,351 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2024-10-13 16:30:44,352 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 86 transitions, 399 flow [2024-10-13 16:30:44,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 16:30:44,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:44,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:44,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 16:30:44,353 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:44,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 786469338, now seen corresponding path program 1 times [2024-10-13 16:30:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532205966] [2024-10-13 16:30:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:44,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:45,103 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 16:30:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532205966] [2024-10-13 16:30:45,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532205966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:45,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:45,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427919027] [2024-10-13 16:30:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:45,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:45,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:45,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-10-13 16:30:45,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 86 transitions, 399 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 16:30:45,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:45,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-10-13 16:30:45,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:46,004 INFO L124 PetriNetUnfolderBase]: 2023/4311 cut-off events. [2024-10-13 16:30:46,004 INFO L125 PetriNetUnfolderBase]: For 4918/4920 co-relation queries the response was YES. [2024-10-13 16:30:46,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12273 conditions, 4311 events. 2023/4311 cut-off events. For 4918/4920 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25957 event pairs, 280 based on Foata normal form. 26/4315 useless extension candidates. Maximal degree in co-relation 12247. Up to 1301 conditions per place. [2024-10-13 16:30:46,024 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 143 selfloop transitions, 15 changer transitions 16/196 dead transitions. [2024-10-13 16:30:46,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 196 transitions, 1233 flow [2024-10-13 16:30:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:30:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:30:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 532 transitions. [2024-10-13 16:30:46,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49304911955514363 [2024-10-13 16:30:46,025 INFO L175 Difference]: Start difference. First operand has 124 places, 86 transitions, 399 flow. Second operand 13 states and 532 transitions. [2024-10-13 16:30:46,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 196 transitions, 1233 flow [2024-10-13 16:30:46,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 196 transitions, 1210 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-13 16:30:46,038 INFO L231 Difference]: Finished difference. Result has 127 places, 85 transitions, 402 flow [2024-10-13 16:30:46,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=127, PETRI_TRANSITIONS=85} [2024-10-13 16:30:46,038 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2024-10-13 16:30:46,039 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 85 transitions, 402 flow [2024-10-13 16:30:46,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 16:30:46,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:46,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:46,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 16:30:46,039 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:46,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash -851179633, now seen corresponding path program 1 times [2024-10-13 16:30:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412096798] [2024-10-13 16:30:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:46,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:46,861 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 16:30:46,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412096798] [2024-10-13 16:30:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412096798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:46,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:46,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 16:30:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109848448] [2024-10-13 16:30:46,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:46,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:46,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:46,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:46,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 85 transitions, 402 flow. Second operand has 11 states, 11 states have (on average 35.09090909090909) internal successors, (386), 11 states have internal predecessors, (386), 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 16:30:46,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:46,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:46,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:47,652 INFO L124 PetriNetUnfolderBase]: 1748/3807 cut-off events. [2024-10-13 16:30:47,653 INFO L125 PetriNetUnfolderBase]: For 4429/4431 co-relation queries the response was YES. [2024-10-13 16:30:47,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10888 conditions, 3807 events. 1748/3807 cut-off events. For 4429/4431 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 22227 event pairs, 265 based on Foata normal form. 26/3813 useless extension candidates. Maximal degree in co-relation 10861. Up to 946 conditions per place. [2024-10-13 16:30:47,677 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 137 selfloop transitions, 13 changer transitions 15/189 dead transitions. [2024-10-13 16:30:47,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 189 transitions, 1182 flow [2024-10-13 16:30:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:30:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:30:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 519 transitions. [2024-10-13 16:30:47,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210843373493976 [2024-10-13 16:30:47,679 INFO L175 Difference]: Start difference. First operand has 127 places, 85 transitions, 402 flow. Second operand 12 states and 519 transitions. [2024-10-13 16:30:47,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 189 transitions, 1182 flow [2024-10-13 16:30:47,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 189 transitions, 1149 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-10-13 16:30:47,693 INFO L231 Difference]: Finished difference. Result has 125 places, 83 transitions, 379 flow [2024-10-13 16:30:47,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=379, PETRI_PLACES=125, PETRI_TRANSITIONS=83} [2024-10-13 16:30:47,695 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-10-13 16:30:47,695 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 83 transitions, 379 flow [2024-10-13 16:30:47,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.09090909090909) internal successors, (386), 11 states have internal predecessors, (386), 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 16:30:47,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:47,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:47,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 16:30:47,696 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:47,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1551882131, now seen corresponding path program 1 times [2024-10-13 16:30:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941072061] [2024-10-13 16:30:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:49,117 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 16:30:49,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:49,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941072061] [2024-10-13 16:30:49,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941072061] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:49,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848949975] [2024-10-13 16:30:49,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:49,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:49,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:49,120 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 16:30:49,121 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 16:30:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:49,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-13 16:30:49,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:49,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-13 16:30:49,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2024-10-13 16:30:49,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 89 [2024-10-13 16:30:49,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2024-10-13 16:30:49,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 68 [2024-10-13 16:30:49,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 450 treesize of output 393 [2024-10-13 16:30:50,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 138 [2024-10-13 16:30:51,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 217 [2024-10-13 16:30:51,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 511 treesize of output 442 [2024-10-13 16:30:51,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1059 treesize of output 911 [2024-10-13 16:30:52,107 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 16:30:52,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:14,638 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 16:31:14,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848949975] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:14,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:14,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 40 [2024-10-13 16:31:14,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893727686] [2024-10-13 16:31:14,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:14,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-13 16:31:14,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:14,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-13 16:31:14,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2024-10-13 16:31:21,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:31:21,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2024-10-13 16:31:21,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 83 transitions, 379 flow. Second operand has 42 states, 42 states have (on average 24.857142857142858) internal successors, (1044), 42 states have internal predecessors, (1044), 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 16:31:21,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:21,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2024-10-13 16:31:21,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:30,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:31:34,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:31:38,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:31:40,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]