./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:04:46,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:04:46,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:04:46,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:04:46,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:04:46,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:04:46,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:04:46,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:04:46,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:04:46,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:04:46,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:04:46,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:04:46,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:04:46,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:04:46,308 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:04:46,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:04:46,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:04:46,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:04:46,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:04:46,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:04:46,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:04:46,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:04:46,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:04:46,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:04:46,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:04:46,314 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:04:46,314 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:04:46,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:04:46,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:04:46,328 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:04:46,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:04:46,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:04:46,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:04:46,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:04:46,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:46,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:04:46,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:04:46,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:04:46,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:04:46,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:04:46,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:04:46,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:04:46,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:04:46,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:04:46,334 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-31 22:04:46,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:46,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:46,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:46,694 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:46,694 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:46,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread/stack_longer-1.i Unable to find full path for "g++" [2024-10-31 22:04:49,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:49,374 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:49,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-31 22:04:49,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/data/801bce806/8d2e84f8af0c421193cf8415622e3b48/FLAGf93aa605f [2024-10-31 22:04:49,425 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/data/801bce806/8d2e84f8af0c421193cf8415622e3b48 [2024-10-31 22:04:49,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:49,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:49,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:49,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:49,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:49,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:49" (1/1) ... [2024-10-31 22:04:49,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d18890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:49, skipping insertion in model container [2024-10-31 22:04:49,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:49" (1/1) ... [2024-10-31 22:04:49,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:50,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:50,213 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:50,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:50,424 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:50,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50 WrapperNode [2024-10-31 22:04:50,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:50,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:50,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:50,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:50,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,558 INFO L138 Inliner]: procedures = 277, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 564 [2024-10-31 22:04:50,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:50,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:50,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:50,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:50,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,593 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,630 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-10-31 22:04:50,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:50,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:50,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:50,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:50,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (1/1) ... [2024-10-31 22:04:50,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:50,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:50,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:50,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-31 22:04:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-31 22:04:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-31 22:04:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-31 22:04:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:04:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:04:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:04:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:04:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:04:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:04:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:04:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:04:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:50,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:50,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:50,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:50,781 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:04:51,012 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:51,014 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:51,933 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:04:51,933 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:59,080 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:59,080 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:04:59,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:59 BoogieIcfgContainer [2024-10-31 22:04:59,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:59,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:59,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:59,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:59,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:49" (1/3) ... [2024-10-31 22:04:59,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2708d6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:59, skipping insertion in model container [2024-10-31 22:04:59,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:50" (2/3) ... [2024-10-31 22:04:59,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2708d6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:59, skipping insertion in model container [2024-10-31 22:04:59,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:59" (3/3) ... [2024-10-31 22:04:59,099 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-31 22:04:59,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:59,136 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:04:59,136 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:04:59,199 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:04:59,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-31 22:04:59,287 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-31 22:04:59,287 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:04:59,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-31 22:04:59,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-31 22:04:59,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-31 22:04:59,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:59,315 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;@386532db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:59,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-31 22:04:59,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:04:59,336 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-31 22:04:59,337 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:04:59,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:59,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:59,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:04:59,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1346292632, now seen corresponding path program 1 times [2024-10-31 22:04:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683159595] [2024-10-31 22:04:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:00,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683159595] [2024-10-31 22:05:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683159595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:00,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704558237] [2024-10-31 22:05:00,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:00,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:00,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:00,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:00,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:00,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:00,614 INFO L124 PetriNetUnfolderBase]: 708/1406 cut-off events. [2024-10-31 22:05:00,614 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-31 22:05:00,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1406 events. 708/1406 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7666 event pairs, 143 based on Foata normal form. 40/1294 useless extension candidates. Maximal degree in co-relation 2468. Up to 781 conditions per place. [2024-10-31 22:05:00,629 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-31 22:05:00,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-10-31 22:05:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:05:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-31 22:05:00,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-31 22:05:00,647 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-10-31 22:05:00,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-10-31 22:05:00,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:00,657 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-10-31 22:05:00,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-31 22:05:00,666 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-31 22:05:00,667 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-10-31 22:05:00,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:00,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:00,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:00,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:00,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:00,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash 488413087, now seen corresponding path program 1 times [2024-10-31 22:05:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380971059] [2024-10-31 22:05:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:00,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:00,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380971059] [2024-10-31 22:05:00,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380971059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:00,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:00,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858238830] [2024-10-31 22:05:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:00,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:00,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:00,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:00,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:00,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:00,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:01,297 INFO L124 PetriNetUnfolderBase]: 746/1508 cut-off events. [2024-10-31 22:05:01,297 INFO L125 PetriNetUnfolderBase]: For 346/350 co-relation queries the response was YES. [2024-10-31 22:05:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1508 events. 746/1508 cut-off events. For 346/350 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8354 event pairs, 195 based on Foata normal form. 64/1451 useless extension candidates. Maximal degree in co-relation 2800. Up to 839 conditions per place. [2024-10-31 22:05:01,309 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-10-31 22:05:01,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-10-31 22:05:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:05:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-31 22:05:01,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-31 22:05:01,312 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-10-31 22:05:01,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-10-31 22:05:01,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:05:01,318 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-10-31 22:05:01,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-31 22:05:01,319 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-31 22:05:01,320 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-10-31 22:05:01,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:01,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:01,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:01,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:01,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:01,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2039092999, now seen corresponding path program 1 times [2024-10-31 22:05:01,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359450352] [2024-10-31 22:05:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359450352] [2024-10-31 22:05:01,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359450352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:01,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:01,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483387822] [2024-10-31 22:05:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:01,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:01,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:01,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:01,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:01,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:02,103 INFO L124 PetriNetUnfolderBase]: 1250/2479 cut-off events. [2024-10-31 22:05:02,103 INFO L125 PetriNetUnfolderBase]: For 1160/1168 co-relation queries the response was YES. [2024-10-31 22:05:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 2479 events. 1250/2479 cut-off events. For 1160/1168 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15009 event pairs, 528 based on Foata normal form. 68/2430 useless extension candidates. Maximal degree in co-relation 5209. Up to 1228 conditions per place. [2024-10-31 22:05:02,123 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-10-31 22:05:02,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-10-31 22:05:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-31 22:05:02,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-31 22:05:02,129 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-10-31 22:05:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-10-31 22:05:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:02,147 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-10-31 22:05:02,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-10-31 22:05:02,149 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-10-31 22:05:02,150 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-10-31 22:05:02,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:02,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:02,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:02,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:02,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:02,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash -628901138, now seen corresponding path program 1 times [2024-10-31 22:05:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:02,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061971746] [2024-10-31 22:05:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:02,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:02,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061971746] [2024-10-31 22:05:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061971746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:02,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:02,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808953722] [2024-10-31 22:05:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:02,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:02,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:02,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:02,994 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2024-10-31 22:05:02,994 INFO L125 PetriNetUnfolderBase]: For 2145/2317 co-relation queries the response was YES. [2024-10-31 22:05:03,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3261 events. 1711/3261 cut-off events. For 2145/2317 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20149 event pairs, 635 based on Foata normal form. 106/3248 useless extension candidates. Maximal degree in co-relation 7134. Up to 1454 conditions per place. [2024-10-31 22:05:03,026 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-31 22:05:03,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-10-31 22:05:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-31 22:05:03,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-31 22:05:03,028 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-10-31 22:05:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-10-31 22:05:03,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:03,038 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-10-31 22:05:03,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-10-31 22:05:03,040 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-10-31 22:05:03,040 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-10-31 22:05:03,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:03,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:03,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:03,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:03,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:03,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1258820133, now seen corresponding path program 1 times [2024-10-31 22:05:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354792621] [2024-10-31 22:05:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354792621] [2024-10-31 22:05:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354792621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:03,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820098827] [2024-10-31 22:05:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:03,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:03,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-31 22:05:03,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:03,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:03,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-31 22:05:03,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:03,815 INFO L124 PetriNetUnfolderBase]: 823/1824 cut-off events. [2024-10-31 22:05:03,815 INFO L125 PetriNetUnfolderBase]: For 1152/1228 co-relation queries the response was YES. [2024-10-31 22:05:03,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 1824 events. 823/1824 cut-off events. For 1152/1228 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10616 event pairs, 210 based on Foata normal form. 92/1883 useless extension candidates. Maximal degree in co-relation 4330. Up to 954 conditions per place. [2024-10-31 22:05:03,834 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-10-31 22:05:03,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-10-31 22:05:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-31 22:05:03,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:05:03,837 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-10-31 22:05:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-10-31 22:05:03,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:03,854 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-10-31 22:05:03,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-10-31 22:05:03,855 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-31 22:05:03,855 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-10-31 22:05:03,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:03,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:03,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:03,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:05:03,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:03,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash -65955006, now seen corresponding path program 1 times [2024-10-31 22:05:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977850511] [2024-10-31 22:05:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:04,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977850511] [2024-10-31 22:05:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977850511] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631812792] [2024-10-31 22:05:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:04,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:04,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:04,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:04,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:04,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:05:04,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:04,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631812792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:05:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217838122] [2024-10-31 22:05:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:04,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:04,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:04,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:04,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:04,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:04,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:05,295 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2024-10-31 22:05:05,295 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2024-10-31 22:05:05,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2777 events. 1302/2777 cut-off events. For 1364/1474 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17033 event pairs, 273 based on Foata normal form. 18/2744 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2024-10-31 22:05:05,323 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-31 22:05:05,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-10-31 22:05:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:05:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-10-31 22:05:05,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-31 22:05:05,325 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-10-31 22:05:05,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-10-31 22:05:05,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:05,335 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-10-31 22:05:05,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-10-31 22:05:05,336 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-10-31 22:05:05,336 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-10-31 22:05:05,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:05,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:05,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:05,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:05,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:05,542 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:05,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -947246490, now seen corresponding path program 1 times [2024-10-31 22:05:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635323137] [2024-10-31 22:05:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:05,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635323137] [2024-10-31 22:05:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635323137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217142423] [2024-10-31 22:05:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:05,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:05,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:05:05,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:05,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:05,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:05:05,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:06,821 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2024-10-31 22:05:06,821 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2024-10-31 22:05:06,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 3777 events. 1824/3777 cut-off events. For 2941/3113 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24295 event pairs, 351 based on Foata normal form. 26/3786 useless extension candidates. Maximal degree in co-relation 7956. Up to 1716 conditions per place. [2024-10-31 22:05:06,849 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-10-31 22:05:06,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-10-31 22:05:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:05:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-10-31 22:05:06,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-10-31 22:05:06,851 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-10-31 22:05:06,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-10-31 22:05:06,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:06,861 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-10-31 22:05:06,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-10-31 22:05:06,862 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-10-31 22:05:06,862 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-10-31 22:05:06,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:06,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:06,863 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:06,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:05:06,863 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:06,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash 304233348, now seen corresponding path program 1 times [2024-10-31 22:05:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540129231] [2024-10-31 22:05:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540129231] [2024-10-31 22:05:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540129231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602383009] [2024-10-31 22:05:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:07,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:07,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:05:07,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:07,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:07,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:05:07,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:07,953 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2024-10-31 22:05:07,953 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2024-10-31 22:05:07,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4739 events. 2301/4739 cut-off events. For 4939/5173 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32233 event pairs, 536 based on Foata normal form. 24/4736 useless extension candidates. Maximal degree in co-relation 9575. Up to 2363 conditions per place. [2024-10-31 22:05:08,003 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-10-31 22:05:08,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-10-31 22:05:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:05:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-10-31 22:05:08,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-31 22:05:08,006 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-10-31 22:05:08,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-10-31 22:05:08,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:08,027 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-10-31 22:05:08,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-10-31 22:05:08,028 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-31 22:05:08,028 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-10-31 22:05:08,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:08,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:08,029 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:08,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:05:08,030 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:08,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2020732047, now seen corresponding path program 1 times [2024-10-31 22:05:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616649312] [2024-10-31 22:05:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:08,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616649312] [2024-10-31 22:05:08,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616649312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:08,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815162192] [2024-10-31 22:05:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:08,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:08,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:08,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:08,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:08,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:08,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:08,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:08,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815162192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:08,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-31 22:05:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338511224] [2024-10-31 22:05:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:08,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:08,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-31 22:05:08,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:08,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:08,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-31 22:05:08,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:09,571 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-10-31 22:05:09,572 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-10-31 22:05:09,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32574 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2024-10-31 22:05:09,624 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-10-31 22:05:09,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-10-31 22:05:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-31 22:05:09,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-31 22:05:09,626 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-10-31 22:05:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-10-31 22:05:09,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-31 22:05:09,657 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-10-31 22:05:09,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-31 22:05:09,658 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-10-31 22:05:09,658 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-10-31 22:05:09,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:09,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:09,659 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:09,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:09,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:09,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:09,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2044603905, now seen corresponding path program 1 times [2024-10-31 22:05:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:09,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281913435] [2024-10-31 22:05:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281913435] [2024-10-31 22:05:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281913435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499530886] [2024-10-31 22:05:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:10,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:10,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:10,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:05:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:10,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:05:10,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:10,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499530886] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:10,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:10,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:05:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834458193] [2024-10-31 22:05:10,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:10,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:05:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:05:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:05:10,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-31 22:05:10,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:10,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:10,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-31 22:05:10,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:12,134 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-10-31 22:05:12,134 INFO L125 PetriNetUnfolderBase]: For 12128/12358 co-relation queries the response was YES. [2024-10-31 22:05:12,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12128/12358 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46752 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2024-10-31 22:05:12,207 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-10-31 22:05:12,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-10-31 22:05:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:05:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-10-31 22:05:12,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-10-31 22:05:12,210 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-10-31 22:05:12,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-10-31 22:05:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:12,254 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-10-31 22:05:12,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-10-31 22:05:12,255 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-31 22:05:12,255 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-10-31 22:05:12,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:12,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:12,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:12,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:05:12,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed2b6f13-bef9-40d2-8b12-45e74b8f9d09/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:05:12,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:12,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash 700131186, now seen corresponding path program 1 times [2024-10-31 22:05:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:12,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021705919] [2024-10-31 22:05:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:12,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021705919] [2024-10-31 22:05:12,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021705919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:12,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:12,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:12,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161131621] [2024-10-31 22:05:12,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:12,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:12,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:12,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:12,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:05:12,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:12,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:12,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:05:12,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:14,010 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2024-10-31 22:05:14,010 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2024-10-31 22:05:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20153 conditions, 6946 events. 3469/6946 cut-off events. For 13979/14366 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45996 event pairs, 727 based on Foata normal form. 67/6990 useless extension candidates. Maximal degree in co-relation 17120. Up to 3973 conditions per place. [2024-10-31 22:05:14,081 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-10-31 22:05:14,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-10-31 22:05:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:05:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-10-31 22:05:14,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-10-31 22:05:14,083 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-10-31 22:05:14,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-10-31 22:05:14,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:14,145 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-10-31 22:05:14,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-10-31 22:05:14,146 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-10-31 22:05:14,146 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-10-31 22:05:14,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:14,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:14,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:14,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:05:14,148 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-31 22:05:14,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 841300477, now seen corresponding path program 1 times [2024-10-31 22:05:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:14,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191109617] [2024-10-31 22:05:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:14,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191109617] [2024-10-31 22:05:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191109617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:14,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:14,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:14,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694271589] [2024-10-31 22:05:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:14,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:14,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:05:14,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:14,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:14,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:05:14,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:15,460 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2024-10-31 22:05:15,460 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2024-10-31 22:05:15,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7161 events. 3507/7161 cut-off events. For 14979/15265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49192 event pairs, 947 based on Foata normal form. 12/7148 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place.