./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:49:44,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:49:44,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:49:44,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:49:44,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:49:44,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:49:44,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:49:44,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:49:44,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:49:44,195 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:49:44,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:49:44,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:49:44,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:49:44,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:49:44,197 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:49:44,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:49:44,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:49:44,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:49:44,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:49:44,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:49:44,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:49:44,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:49:44,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:49:44,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:49:44,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:49:44,204 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:49:44,204 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:49:44,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:49:44,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:49:44,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:49:44,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:49:44,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:49:44,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:49:44,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:49:44,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:49:44,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:49:44,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:49:44,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:49:44,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:49:44,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:49:44,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:49:44,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:49:44,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:49:44,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:49:44,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-23 01:49:44,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:49:44,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:49:44,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:49:44,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:49:44,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:49:44,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-23 01:49:45,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:49:46,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:49:46,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-23 01:49:46,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fd1ec61/f402b0a2d752495797ce1af2b22157cb/FLAG5316ffd91 [2024-11-23 01:49:46,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fd1ec61/f402b0a2d752495797ce1af2b22157cb [2024-11-23 01:49:46,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:49:46,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:49:46,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:49:46,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:49:46,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:49:46,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:46" (1/1) ... [2024-11-23 01:49:46,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e85a465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:46, skipping insertion in model container [2024-11-23 01:49:46,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:46" (1/1) ... [2024-11-23 01:49:46,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:49:47,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:49:47,084 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:49:47,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:49:47,329 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:49:47,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47 WrapperNode [2024-11-23 01:49:47,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:49:47,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:49:47,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:49:47,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:49:47,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,407 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2024-11-23 01:49:47,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:49:47,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:49:47,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:49:47,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:49:47,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,445 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-11-23 01:49:47,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:49:47,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:49:47,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:49:47,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:49:47,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (1/1) ... [2024-11-23 01:49:47,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:49:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:49:47,531 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) [2024-11-23 01:49:47,536 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 [2024-11-23 01:49:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-23 01:49:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-23 01:49:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-23 01:49:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-23 01:49:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:49:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:49:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:49:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:49:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:49:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-23 01:49:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:49:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:49:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 01:49:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 01:49:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:49:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:49:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:49:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:49:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 01:49:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 01:49:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 01:49:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 01:49:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 01:49:47,597 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:49:47,900 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:49:47,903 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:49:48,224 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:49:48,225 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:49:48,374 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:49:48,374 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-23 01:49:48,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:48 BoogieIcfgContainer [2024-11-23 01:49:48,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:49:48,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:49:48,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:49:48,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:49:48,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:49:46" (1/3) ... [2024-11-23 01:49:48,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3074f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:48, skipping insertion in model container [2024-11-23 01:49:48,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:47" (2/3) ... [2024-11-23 01:49:48,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3074f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:48, skipping insertion in model container [2024-11-23 01:49:48,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:48" (3/3) ... [2024-11-23 01:49:48,404 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-23 01:49:48,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:49:48,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-23 01:49:48,422 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:49:48,495 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:49:48,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2024-11-23 01:49:48,580 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2024-11-23 01:49:48,580 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:49:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 31/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 266 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2024-11-23 01:49:48,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2024-11-23 01:49:48,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2024-11-23 01:49:48,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:49:48,612 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;@74879c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:49:48,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-23 01:49:48,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:49:48,616 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-23 01:49:48,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:49:48,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:48,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:49:48,618 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:48,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 622803, now seen corresponding path program 1 times [2024-11-23 01:49:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378499905] [2024-11-23 01:49:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:49,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378499905] [2024-11-23 01:49:49,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378499905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:49,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:49:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988978302] [2024-11-23 01:49:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:49,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:49:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:49:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:49:49,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 01:49:49,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-23 01:49:49,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:49,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 01:49:49,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:49,371 INFO L124 PetriNetUnfolderBase]: 622/1420 cut-off events. [2024-11-23 01:49:49,372 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-23 01:49:49,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1420 events. 622/1420 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8776 event pairs, 494 based on Foata normal form. 285/1420 useless extension candidates. Maximal degree in co-relation 2326. Up to 956 conditions per place. [2024-11-23 01:49:49,391 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-23 01:49:49,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 211 flow [2024-11-23 01:49:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:49:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:49:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-23 01:49:49,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-11-23 01:49:49,409 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 192 transitions. [2024-11-23 01:49:49,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 211 flow [2024-11-23 01:49:49,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:49:49,417 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2024-11-23 01:49:49,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-23 01:49:49,425 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-23 01:49:49,425 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2024-11-23 01:49:49,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-23 01:49:49,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:49,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:49:49,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:49:49,426 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:49,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 19307543, now seen corresponding path program 1 times [2024-11-23 01:49:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993643198] [2024-11-23 01:49:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993643198] [2024-11-23 01:49:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993643198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:49,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:49:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692769002] [2024-11-23 01:49:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:49,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:49:49,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:49,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:49:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:49:49,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 01:49:49,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-23 01:49:49,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:49,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 01:49:49,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:49,695 INFO L124 PetriNetUnfolderBase]: 622/1419 cut-off events. [2024-11-23 01:49:49,695 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-23 01:49:49,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1419 events. 622/1419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8790 event pairs, 494 based on Foata normal form. 0/1135 useless extension candidates. Maximal degree in co-relation 2400. Up to 955 conditions per place. [2024-11-23 01:49:49,704 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-23 01:49:49,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 206 flow [2024-11-23 01:49:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:49:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:49:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-23 01:49:49,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-23 01:49:49,706 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 173 transitions. [2024-11-23 01:49:49,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 206 flow [2024-11-23 01:49:49,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:49:49,708 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2024-11-23 01:49:49,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-23 01:49:49,709 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-23 01:49:49,709 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2024-11-23 01:49:49,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-23 01:49:49,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:49,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:49,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:49:49,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:49,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -601694660, now seen corresponding path program 1 times [2024-11-23 01:49:49,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:49,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405982365] [2024-11-23 01:49:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405982365] [2024-11-23 01:49:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405982365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:49,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:49,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:49:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736232238] [2024-11-23 01:49:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:49,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:49:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:49:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:49:49,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 01:49:49,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-23 01:49:49,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:49,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 01:49:49,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:50,362 INFO L124 PetriNetUnfolderBase]: 1742/3783 cut-off events. [2024-11-23 01:49:50,363 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-23 01:49:50,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 3783 events. 1742/3783 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25815 event pairs, 434 based on Foata normal form. 48/3163 useless extension candidates. Maximal degree in co-relation 6632. Up to 1124 conditions per place. [2024-11-23 01:49:50,385 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 107 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-23 01:49:50,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 517 flow [2024-11-23 01:49:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:49:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:49:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-11-23 01:49:50,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2024-11-23 01:49:50,390 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 342 transitions. [2024-11-23 01:49:50,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 517 flow [2024-11-23 01:49:50,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:49:50,395 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2024-11-23 01:49:50,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-23 01:49:50,396 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-23 01:49:50,397 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2024-11-23 01:49:50,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-23 01:49:50,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:50,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:50,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:49:50,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:50,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash -202577174, now seen corresponding path program 1 times [2024-11-23 01:49:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496310821] [2024-11-23 01:49:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:50,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:50,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496310821] [2024-11-23 01:49:50,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496310821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:50,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:50,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:49:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219819567] [2024-11-23 01:49:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:50,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:49:50,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:49:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:49:50,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 01:49:50,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-23 01:49:50,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:50,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 01:49:50,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:51,410 INFO L124 PetriNetUnfolderBase]: 4174/8942 cut-off events. [2024-11-23 01:49:51,411 INFO L125 PetriNetUnfolderBase]: For 906/1020 co-relation queries the response was YES. [2024-11-23 01:49:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 8942 events. 4174/8942 cut-off events. For 906/1020 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 69570 event pairs, 1530 based on Foata normal form. 73/7865 useless extension candidates. Maximal degree in co-relation 16757. Up to 2752 conditions per place. [2024-11-23 01:49:51,456 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 109 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-11-23 01:49:51,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 590 flow [2024-11-23 01:49:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:49:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:49:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-23 01:49:51,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609009009009009 [2024-11-23 01:49:51,458 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 5 states and 338 transitions. [2024-11-23 01:49:51,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 590 flow [2024-11-23 01:49:51,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:49:51,464 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2024-11-23 01:49:51,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-11-23 01:49:51,465 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-23 01:49:51,465 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2024-11-23 01:49:51,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-23 01:49:51,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:51,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:51,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:49:51,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1592040767, now seen corresponding path program 1 times [2024-11-23 01:49:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956054364] [2024-11-23 01:49:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:51,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956054364] [2024-11-23 01:49:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956054364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:51,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:51,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:49:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787384569] [2024-11-23 01:49:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:51,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:49:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:49:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:49:51,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 01:49:51,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-23 01:49:51,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:51,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 01:49:51,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:52,568 INFO L124 PetriNetUnfolderBase]: 4603/9884 cut-off events. [2024-11-23 01:49:52,568 INFO L125 PetriNetUnfolderBase]: For 1174/1302 co-relation queries the response was YES. [2024-11-23 01:49:52,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19334 conditions, 9884 events. 4603/9884 cut-off events. For 1174/1302 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78688 event pairs, 3356 based on Foata normal form. 373/9066 useless extension candidates. Maximal degree in co-relation 19323. Up to 5931 conditions per place. [2024-11-23 01:49:52,641 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 80 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-23 01:49:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 486 flow [2024-11-23 01:49:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:49:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:49:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-23 01:49:52,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-23 01:49:52,644 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 258 transitions. [2024-11-23 01:49:52,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 486 flow [2024-11-23 01:49:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:49:52,650 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 226 flow [2024-11-23 01:49:52,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-23 01:49:52,651 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2024-11-23 01:49:52,651 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 226 flow [2024-11-23 01:49:52,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-23 01:49:52,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:52,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:52,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:49:52,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:52,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -836606757, now seen corresponding path program 1 times [2024-11-23 01:49:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693208739] [2024-11-23 01:49:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:52,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:52,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693208739] [2024-11-23 01:49:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693208739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:49:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934968836] [2024-11-23 01:49:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:49:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:49:52,854 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) [2024-11-23 01:49:52,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:49:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:52,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:49:52,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:49:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:53,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:49:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934968836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:49:53,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:49:53,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416361990] [2024-11-23 01:49:53,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:53,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:49:53,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:49:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:49:53,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 01:49:53,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-23 01:49:53,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:53,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 01:49:53,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:54,106 INFO L124 PetriNetUnfolderBase]: 4222/9077 cut-off events. [2024-11-23 01:49:54,106 INFO L125 PetriNetUnfolderBase]: For 3450/3646 co-relation queries the response was YES. [2024-11-23 01:49:54,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 9077 events. 4222/9077 cut-off events. For 3450/3646 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 70911 event pairs, 827 based on Foata normal form. 398/8539 useless extension candidates. Maximal degree in co-relation 19039. Up to 3273 conditions per place. [2024-11-23 01:49:54,166 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-23 01:49:54,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 665 flow [2024-11-23 01:49:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:49:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:49:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-23 01:49:54,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-23 01:49:54,168 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 226 flow. Second operand 6 states and 378 transitions. [2024-11-23 01:49:54,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 665 flow [2024-11-23 01:49:54,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:49:54,182 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2024-11-23 01:49:54,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-11-23 01:49:54,183 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-23 01:49:54,183 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2024-11-23 01:49:54,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-23 01:49:54,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:54,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:54,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:49:54,384 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 [2024-11-23 01:49:54,385 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:54,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash -165004939, now seen corresponding path program 1 times [2024-11-23 01:49:54,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658281941] [2024-11-23 01:49:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:54,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658281941] [2024-11-23 01:49:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658281941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:49:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246778404] [2024-11-23 01:49:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:54,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:49:54,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:49:54,521 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) [2024-11-23 01:49:54,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:49:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:54,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:49:54,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:49:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:54,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:49:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246778404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:49:54,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:49:54,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:49:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81532858] [2024-11-23 01:49:54,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:49:54,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:49:54,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:49:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:49:54,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 01:49:54,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-23 01:49:54,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:54,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 01:49:54,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:56,562 INFO L124 PetriNetUnfolderBase]: 7378/16223 cut-off events. [2024-11-23 01:49:56,562 INFO L125 PetriNetUnfolderBase]: For 7218/7538 co-relation queries the response was YES. [2024-11-23 01:49:56,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34002 conditions, 16223 events. 7378/16223 cut-off events. For 7218/7538 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 139212 event pairs, 827 based on Foata normal form. 737/15379 useless extension candidates. Maximal degree in co-relation 33987. Up to 2517 conditions per place. [2024-11-23 01:49:56,665 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 250 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-11-23 01:49:56,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 1398 flow [2024-11-23 01:49:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 01:49:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 01:49:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 732 transitions. [2024-11-23 01:49:56,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5995085995085995 [2024-11-23 01:49:56,668 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 732 transitions. [2024-11-23 01:49:56,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 1398 flow [2024-11-23 01:49:56,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 294 transitions, 1391 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:49:56,682 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-23 01:49:56,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-23 01:49:56,684 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 01:49:56,684 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-23 01:49:56,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-23 01:49:56,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:56,686 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:56,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:49:56,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 01:49:56,889 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:56,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -820185058, now seen corresponding path program 1 times [2024-11-23 01:49:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168226198] [2024-11-23 01:49:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168226198] [2024-11-23 01:49:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168226198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:49:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036000172] [2024-11-23 01:49:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:57,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:49:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:49:57,007 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) [2024-11-23 01:49:57,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:49:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:57,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:49:57,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:49:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:49:57,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:49:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036000172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:49:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:49:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217293509] [2024-11-23 01:49:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:57,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:49:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:49:57,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:49:57,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 01:49:57,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-23 01:49:57,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:57,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 01:49:57,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:49:58,546 INFO L124 PetriNetUnfolderBase]: 7861/16447 cut-off events. [2024-11-23 01:49:58,546 INFO L125 PetriNetUnfolderBase]: For 11748/12088 co-relation queries the response was YES. [2024-11-23 01:49:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37321 conditions, 16447 events. 7861/16447 cut-off events. For 11748/12088 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 135250 event pairs, 776 based on Foata normal form. 219/14843 useless extension candidates. Maximal degree in co-relation 37300. Up to 7995 conditions per place. [2024-11-23 01:49:58,626 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-23 01:49:58,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2024-11-23 01:49:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:49:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:49:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-23 01:49:58,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-23 01:49:58,628 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2024-11-23 01:49:58,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2024-11-23 01:49:58,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-23 01:49:58,670 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-23 01:49:58,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-23 01:49:58,672 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 01:49:58,672 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-23 01:49:58,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-23 01:49:58,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:49:58,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:49:58,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:49:58,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:49:58,873 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:49:58,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:49:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash 344067737, now seen corresponding path program 1 times [2024-11-23 01:49:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:49:58,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042426758] [2024-11-23 01:49:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:49:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:49:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:49:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:49:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:49:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042426758] [2024-11-23 01:49:58,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042426758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:49:58,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:49:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:49:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112293103] [2024-11-23 01:49:58,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:49:58,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:49:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:49:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:49:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:49:58,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 01:49:58,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-23 01:49:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:49:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 01:49:58,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:00,456 INFO L124 PetriNetUnfolderBase]: 7681/16206 cut-off events. [2024-11-23 01:50:00,456 INFO L125 PetriNetUnfolderBase]: For 13502/13750 co-relation queries the response was YES. [2024-11-23 01:50:00,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36752 conditions, 16206 events. 7681/16206 cut-off events. For 13502/13750 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 136250 event pairs, 4904 based on Foata normal form. 237/14775 useless extension candidates. Maximal degree in co-relation 36732. Up to 8680 conditions per place. [2024-11-23 01:50:00,533 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-11-23 01:50:00,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2024-11-23 01:50:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-23 01:50:00,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-23 01:50:00,535 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2024-11-23 01:50:00,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2024-11-23 01:50:00,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 01:50:00,581 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2024-11-23 01:50:00,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-23 01:50:00,582 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 01:50:00,582 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2024-11-23 01:50:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-23 01:50:00,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:00,583 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:00,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:50:00,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:50:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1747573302, now seen corresponding path program 1 times [2024-11-23 01:50:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019870943] [2024-11-23 01:50:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:00,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019870943] [2024-11-23 01:50:00,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019870943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:00,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040446892] [2024-11-23 01:50:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:00,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:00,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:00,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:00,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:50:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:00,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:50:00,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:00,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:00,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040446892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:00,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:00,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:50:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913997547] [2024-11-23 01:50:00,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:00,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:00,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 01:50:00,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-23 01:50:00,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:00,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 01:50:00,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:02,380 INFO L124 PetriNetUnfolderBase]: 7598/15425 cut-off events. [2024-11-23 01:50:02,380 INFO L125 PetriNetUnfolderBase]: For 18333/19087 co-relation queries the response was YES. [2024-11-23 01:50:02,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36150 conditions, 15425 events. 7598/15425 cut-off events. For 18333/19087 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 124516 event pairs, 309 based on Foata normal form. 691/14302 useless extension candidates. Maximal degree in co-relation 36130. Up to 4193 conditions per place. [2024-11-23 01:50:02,441 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 196 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-23 01:50:02,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1666 flow [2024-11-23 01:50:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:50:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:50:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-23 01:50:02,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2024-11-23 01:50:02,443 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 398 transitions. [2024-11-23 01:50:02,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1666 flow [2024-11-23 01:50:02,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 228 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:02,461 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2024-11-23 01:50:02,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-11-23 01:50:02,462 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-23 01:50:02,463 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2024-11-23 01:50:02,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-23 01:50:02,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:02,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:02,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:50:02,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:02,665 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:50:02,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1659803202, now seen corresponding path program 1 times [2024-11-23 01:50:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096430924] [2024-11-23 01:50:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:02,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096430924] [2024-11-23 01:50:02,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096430924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062176688] [2024-11-23 01:50:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:02,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:02,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:02,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:50:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:02,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:50:02,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:02,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062176688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:02,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:50:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756393111] [2024-11-23 01:50:02,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:02,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:50:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:50:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:50:02,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 01:50:02,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-23 01:50:02,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:02,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 01:50:02,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:05,481 INFO L124 PetriNetUnfolderBase]: 12595/25560 cut-off events. [2024-11-23 01:50:05,482 INFO L125 PetriNetUnfolderBase]: For 24344/25608 co-relation queries the response was YES. [2024-11-23 01:50:05,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58657 conditions, 25560 events. 12595/25560 cut-off events. For 24344/25608 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 218053 event pairs, 662 based on Foata normal form. 936/23618 useless extension candidates. Maximal degree in co-relation 58636. Up to 3648 conditions per place. [2024-11-23 01:50:05,602 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 372 selfloop transitions, 11 changer transitions 0/411 dead transitions. [2024-11-23 01:50:05,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 411 transitions, 2924 flow [2024-11-23 01:50:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 01:50:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 01:50:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2024-11-23 01:50:05,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2024-11-23 01:50:05,604 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 733 transitions. [2024-11-23 01:50:05,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 411 transitions, 2924 flow [2024-11-23 01:50:05,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 411 transitions, 2917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:05,632 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2024-11-23 01:50:05,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2024-11-23 01:50:05,633 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-11-23 01:50:05,633 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2024-11-23 01:50:05,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-23 01:50:05,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:05,634 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:05,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:50:05,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 01:50:05,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:50:05,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1893276300, now seen corresponding path program 2 times [2024-11-23 01:50:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662719714] [2024-11-23 01:50:05,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:05,876 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:05,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662719714] [2024-11-23 01:50:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662719714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714257000] [2024-11-23 01:50:06,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:06,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:06,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:50:06,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:06,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:06,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 01:50:06,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:06,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714257000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:06,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-23 01:50:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538202183] [2024-11-23 01:50:06,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:06,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 01:50:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 01:50:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 01:50:06,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 01:50:06,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-23 01:50:06,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:06,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 01:50:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:12,856 INFO L124 PetriNetUnfolderBase]: 27757/59706 cut-off events. [2024-11-23 01:50:12,856 INFO L125 PetriNetUnfolderBase]: For 97456/97872 co-relation queries the response was YES. [2024-11-23 01:50:13,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139954 conditions, 59706 events. 27757/59706 cut-off events. For 97456/97872 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 577257 event pairs, 1398 based on Foata normal form. 2372/56171 useless extension candidates. Maximal degree in co-relation 139930. Up to 8480 conditions per place. [2024-11-23 01:50:13,288 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 660 selfloop transitions, 43 changer transitions 0/730 dead transitions. [2024-11-23 01:50:13,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 730 transitions, 4500 flow [2024-11-23 01:50:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 01:50:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 01:50:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1551 transitions. [2024-11-23 01:50:13,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075205640423031 [2024-11-23 01:50:13,293 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1551 transitions. [2024-11-23 01:50:13,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 730 transitions, 4500 flow [2024-11-23 01:50:13,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 730 transitions, 4060 flow, removed 132 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:13,379 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2024-11-23 01:50:13,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-11-23 01:50:13,380 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-23 01:50:13,380 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2024-11-23 01:50:13,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-23 01:50:13,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:13,381 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:13,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:13,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:13,583 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:50:13,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1425773278, now seen corresponding path program 2 times [2024-11-23 01:50:13,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:13,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048811574] [2024-11-23 01:50:13,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:13,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:13,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048811574] [2024-11-23 01:50:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048811574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353337421] [2024-11-23 01:50:14,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:14,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:14,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:14,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:14,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:50:14,252 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:14,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:14,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 01:50:14,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:14,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353337421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:14,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-23 01:50:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230258898] [2024-11-23 01:50:14,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:14,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 01:50:14,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 01:50:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 01:50:14,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 01:50:14,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-23 01:50:14,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:14,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 01:50:14,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:30,506 INFO L124 PetriNetUnfolderBase]: 62365/125364 cut-off events. [2024-11-23 01:50:30,506 INFO L125 PetriNetUnfolderBase]: For 257892/264112 co-relation queries the response was YES. [2024-11-23 01:50:31,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304871 conditions, 125364 events. 62365/125364 cut-off events. For 257892/264112 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 1229432 event pairs, 1538 based on Foata normal form. 6798/118945 useless extension candidates. Maximal degree in co-relation 304834. Up to 18204 conditions per place. [2024-11-23 01:50:31,739 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1338 selfloop transitions, 23 changer transitions 0/1389 dead transitions. [2024-11-23 01:50:31,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1389 transitions, 14369 flow [2024-11-23 01:50:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 01:50:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 01:50:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1546 transitions. [2024-11-23 01:50:31,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055620838229534 [2024-11-23 01:50:31,744 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1546 transitions. [2024-11-23 01:50:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1389 transitions, 14369 flow [2024-11-23 01:50:32,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1389 transitions, 11991 flow, removed 264 selfloop flow, removed 10 redundant places. [2024-11-23 01:50:32,032 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2024-11-23 01:50:32,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=759, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2024-11-23 01:50:32,033 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-23 01:50:32,033 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2024-11-23 01:50:32,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-23 01:50:32,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:32,034 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:32,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:32,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:32,235 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 01:50:32,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2016821420, now seen corresponding path program 3 times [2024-11-23 01:50:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328155643] [2024-11-23 01:50:32,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:32,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-23 01:50:32,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328155643] [2024-11-23 01:50:33,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328155643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050010621] [2024-11-23 01:50:33,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:33,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:33,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:33,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:50:33,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-23 01:50:33,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:33,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 01:50:33,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050010621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:33,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:33,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-23 01:50:33,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25252883] [2024-11-23 01:50:33,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:33,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-23 01:50:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-23 01:50:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 01:50:33,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 01:50:33,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 46.875) internal successors, (2250), 48 states have internal predecessors, (2250), 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) [2024-11-23 01:50:33,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:33,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 01:50:33,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand