./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/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_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/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_d687d147-a214-43a0-acae-425dfe5feb1b/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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:55,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:55,181 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:57:55,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:55,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:55,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:55,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:55,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:55,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:57:55,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:57:55,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:55,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:55,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:55,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:55,230 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:55,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:55,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:55,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:55,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:55,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:55,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:55,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:55,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:55,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:55,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:55,237 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:57:55,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:57:55,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:55,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:55,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:55,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:55,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:55,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:57:55,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:55,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:55,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:55,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:55,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:55,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:55,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:55,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:55,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:55,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:55,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:55,245 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_d687d147-a214-43a0-acae-425dfe5feb1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-31 21:57:55,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:55,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:55,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:55,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:55,609 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:55,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/fibonacci.wvr.c Unable to find full path for "g++" [2024-10-31 21:57:57,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:57,896 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:57,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-31 21:57:57,904 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/data/37bfef715/10775d779dc34023930de6ee7feb9651/FLAG69cb540c0 [2024-10-31 21:57:57,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/data/37bfef715/10775d779dc34023930de6ee7feb9651 [2024-10-31 21:57:57,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:57,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:57,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:57,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:57,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:57,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:57" (1/1) ... [2024-10-31 21:57:57,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46556295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:57, skipping insertion in model container [2024-10-31 21:57:57,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:57" (1/1) ... [2024-10-31 21:57:57,959 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:58,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:58,212 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:58,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:58,260 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:58,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58 WrapperNode [2024-10-31 21:57:58,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:58,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:58,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:58,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:58,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,309 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2024-10-31 21:57:58,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:58,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:58,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:58,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:58,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,342 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:57:58,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:58,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:58,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:58,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:58,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (1/1) ... [2024-10-31 21:57:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:58,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:58,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:58,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d687d147-a214-43a0-acae-425dfe5feb1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:57:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:57:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:57:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:57:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:57:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:58,454 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 21:57:58,583 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:58,585 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:59,258 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:57:59,259 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:59,536 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:59,536 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 21:57:59,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:59 BoogieIcfgContainer [2024-10-31 21:57:59,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:59,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:59,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:59,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:59,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:57" (1/3) ... [2024-10-31 21:57:59,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3764e602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:59, skipping insertion in model container [2024-10-31 21:57:59,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:58" (2/3) ... [2024-10-31 21:57:59,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3764e602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:59, skipping insertion in model container [2024-10-31 21:57:59,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:59" (3/3) ... [2024-10-31 21:57:59,546 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-31 21:57:59,566 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:59,566 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-10-31 21:57:59,567 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:57:59,676 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 21:57:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2024-10-31 21:57:59,781 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2024-10-31 21:57:59,781 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:57:59,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 10/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2024-10-31 21:57:59,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2024-10-31 21:57:59,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2024-10-31 21:57:59,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:59,816 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;@9c3e8ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:59,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-10-31 21:57:59,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:57:59,825 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-10-31 21:57:59,826 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 21:57:59,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:59,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 21:57:59,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:57:59,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -372165075, now seen corresponding path program 1 times [2024-10-31 21:57:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637055186] [2024-10-31 21:57:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:00,129 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 21:58:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637055186] [2024-10-31 21:58:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637055186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:00,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:00,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919639609] [2024-10-31 21:58:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:00,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:00,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:00,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:00,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 21:58:00,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:00,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:00,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:00,916 INFO L124 PetriNetUnfolderBase]: 1063/2550 cut-off events. [2024-10-31 21:58:00,917 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-31 21:58:00,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2550 events. 1063/2550 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19109 event pairs, 412 based on Foata normal form. 60/2083 useless extension candidates. Maximal degree in co-relation 4124. Up to 929 conditions per place. [2024-10-31 21:58:00,951 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 72 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-10-31 21:58:00,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 427 flow [2024-10-31 21:58:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-31 21:58:00,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-31 21:58:00,974 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 296 transitions. [2024-10-31 21:58:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 427 flow [2024-10-31 21:58:00,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:00,988 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 222 flow [2024-10-31 21:58:00,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-10-31 21:58:00,997 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-10-31 21:58:00,998 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 222 flow [2024-10-31 21:58:00,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 21:58:00,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:00,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:00,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:00,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:01,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1347785331, now seen corresponding path program 1 times [2024-10-31 21:58:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:01,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804577105] [2024-10-31 21:58:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,194 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 21:58:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804577105] [2024-10-31 21:58:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804577105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2759548] [2024-10-31 21:58:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:01,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:01,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-31 21:58:01,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 21:58:01,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:01,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-31 21:58:01,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:01,667 INFO L124 PetriNetUnfolderBase]: 873/2206 cut-off events. [2024-10-31 21:58:01,667 INFO L125 PetriNetUnfolderBase]: For 372/380 co-relation queries the response was YES. [2024-10-31 21:58:01,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2206 events. 873/2206 cut-off events. For 372/380 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16263 event pairs, 302 based on Foata normal form. 8/1863 useless extension candidates. Maximal degree in co-relation 2162. Up to 662 conditions per place. [2024-10-31 21:58:01,684 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-10-31 21:58:01,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 364 flow [2024-10-31 21:58:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-31 21:58:01,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-31 21:58:01,688 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 222 flow. Second operand 4 states and 281 transitions. [2024-10-31 21:58:01,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 364 flow [2024-10-31 21:58:01,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:01,698 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 228 flow [2024-10-31 21:58:01,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-10-31 21:58:01,700 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-10-31 21:58:01,701 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 228 flow [2024-10-31 21:58:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 21:58:01,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:01,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:01,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:01,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:01,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1168358703, now seen corresponding path program 1 times [2024-10-31 21:58:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:01,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871915784] [2024-10-31 21:58:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,838 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 21:58:01,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871915784] [2024-10-31 21:58:01,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871915784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:01,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:01,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25238259] [2024-10-31 21:58:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:01,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:01,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-31 21:58:01,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 21:58:01,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:01,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-31 21:58:01,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:02,223 INFO L124 PetriNetUnfolderBase]: 881/2192 cut-off events. [2024-10-31 21:58:02,223 INFO L125 PetriNetUnfolderBase]: For 685/693 co-relation queries the response was YES. [2024-10-31 21:58:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 2192 events. 881/2192 cut-off events. For 685/693 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15893 event pairs, 302 based on Foata normal form. 38/1879 useless extension candidates. Maximal degree in co-relation 2250. Up to 662 conditions per place. [2024-10-31 21:58:02,238 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 51 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-31 21:58:02,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 370 flow [2024-10-31 21:58:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-31 21:58:02,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-31 21:58:02,243 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 228 flow. Second operand 4 states and 277 transitions. [2024-10-31 21:58:02,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 370 flow [2024-10-31 21:58:02,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:02,251 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 224 flow [2024-10-31 21:58:02,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-10-31 21:58:02,252 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-10-31 21:58:02,253 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 224 flow [2024-10-31 21:58:02,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 21:58:02,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:02,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:02,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:02,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:02,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1889321792, now seen corresponding path program 1 times [2024-10-31 21:58:02,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:02,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583228543] [2024-10-31 21:58:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:02,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:02,358 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 21:58:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583228543] [2024-10-31 21:58:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583228543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850476551] [2024-10-31 21:58:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:02,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:02,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 21:58:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:02,842 INFO L124 PetriNetUnfolderBase]: 1246/2933 cut-off events. [2024-10-31 21:58:02,843 INFO L125 PetriNetUnfolderBase]: For 809/844 co-relation queries the response was YES. [2024-10-31 21:58:02,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 2933 events. 1246/2933 cut-off events. For 809/844 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22744 event pairs, 474 based on Foata normal form. 101/2503 useless extension candidates. Maximal degree in co-relation 2716. Up to 1128 conditions per place. [2024-10-31 21:58:02,862 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 76 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-31 21:58:02,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 514 flow [2024-10-31 21:58:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-31 21:58:02,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-31 21:58:02,864 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 224 flow. Second operand 4 states and 294 transitions. [2024-10-31 21:58:02,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 514 flow [2024-10-31 21:58:02,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:02,871 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 250 flow [2024-10-31 21:58:02,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-10-31 21:58:02,873 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2024-10-31 21:58:02,873 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 250 flow [2024-10-31 21:58:02,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 21:58:02,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:02,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:02,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:02,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:02,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1859381675, now seen corresponding path program 1 times [2024-10-31 21:58:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482289466] [2024-10-31 21:58:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,008 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 21:58:03,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:03,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482289466] [2024-10-31 21:58:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482289466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777054862] [2024-10-31 21:58:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:03,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:03,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-31 21:58:03,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:03,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:03,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-31 21:58:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:03,585 INFO L124 PetriNetUnfolderBase]: 1330/2890 cut-off events. [2024-10-31 21:58:03,585 INFO L125 PetriNetUnfolderBase]: For 769/810 co-relation queries the response was YES. [2024-10-31 21:58:03,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2890 events. 1330/2890 cut-off events. For 769/810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 20817 event pairs, 386 based on Foata normal form. 23/2635 useless extension candidates. Maximal degree in co-relation 3442. Up to 877 conditions per place. [2024-10-31 21:58:03,607 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2024-10-31 21:58:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 524 flow [2024-10-31 21:58:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2024-10-31 21:58:03,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2024-10-31 21:58:03,609 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 250 flow. Second operand 5 states and 349 transitions. [2024-10-31 21:58:03,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 524 flow [2024-10-31 21:58:03,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:03,617 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 260 flow [2024-10-31 21:58:03,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2024-10-31 21:58:03,618 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-31 21:58:03,618 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 260 flow [2024-10-31 21:58:03,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:03,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:03,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:03,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:58:03,619 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:03,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1859380650, now seen corresponding path program 1 times [2024-10-31 21:58:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380046662] [2024-10-31 21:58:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,684 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 21:58:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:03,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380046662] [2024-10-31 21:58:03,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380046662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:03,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676414634] [2024-10-31 21:58:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:03,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:03,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:03,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 21:58:03,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:03,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:04,198 INFO L124 PetriNetUnfolderBase]: 1112/2762 cut-off events. [2024-10-31 21:58:04,198 INFO L125 PetriNetUnfolderBase]: For 1214/1237 co-relation queries the response was YES. [2024-10-31 21:58:04,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 2762 events. 1112/2762 cut-off events. For 1214/1237 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21445 event pairs, 515 based on Foata normal form. 49/2477 useless extension candidates. Maximal degree in co-relation 2020. Up to 1170 conditions per place. [2024-10-31 21:58:04,235 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 76 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-31 21:58:04,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 532 flow [2024-10-31 21:58:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-31 21:58:04,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-10-31 21:58:04,240 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 260 flow. Second operand 4 states and 291 transitions. [2024-10-31 21:58:04,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 532 flow [2024-10-31 21:58:04,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 520 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:04,251 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 250 flow [2024-10-31 21:58:04,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-31 21:58:04,254 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-31 21:58:04,255 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 250 flow [2024-10-31 21:58:04,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 21:58:04,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:04,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:04,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:58:04,256 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:04,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1560567403, now seen corresponding path program 1 times [2024-10-31 21:58:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482574903] [2024-10-31 21:58:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,317 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 21:58:04,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:04,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482574903] [2024-10-31 21:58:04,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482574903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507840573] [2024-10-31 21:58:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:04,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:04,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-31 21:58:04,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 21:58:04,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:04,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-31 21:58:04,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:04,743 INFO L124 PetriNetUnfolderBase]: 1010/2629 cut-off events. [2024-10-31 21:58:04,743 INFO L125 PetriNetUnfolderBase]: For 956/983 co-relation queries the response was YES. [2024-10-31 21:58:04,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 2629 events. 1010/2629 cut-off events. For 956/983 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20917 event pairs, 329 based on Foata normal form. 27/2289 useless extension candidates. Maximal degree in co-relation 2586. Up to 813 conditions per place. [2024-10-31 21:58:04,763 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-31 21:58:04,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 422 flow [2024-10-31 21:58:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-10-31 21:58:04,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-31 21:58:04,765 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 250 flow. Second operand 4 states and 280 transitions. [2024-10-31 21:58:04,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 422 flow [2024-10-31 21:58:04,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:04,773 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 250 flow [2024-10-31 21:58:04,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-10-31 21:58:04,774 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-31 21:58:04,774 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 250 flow [2024-10-31 21:58:04,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 21:58:04,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:04,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:04,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:58:04,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:04,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1806256300, now seen corresponding path program 1 times [2024-10-31 21:58:04,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:04,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898157319] [2024-10-31 21:58:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:04,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,893 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 21:58:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898157319] [2024-10-31 21:58:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898157319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:04,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178167930] [2024-10-31 21:58:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:04,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:04,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-31 21:58:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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 21:58:04,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:04,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-31 21:58:04,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:05,531 INFO L124 PetriNetUnfolderBase]: 1293/2819 cut-off events. [2024-10-31 21:58:05,531 INFO L125 PetriNetUnfolderBase]: For 1297/1348 co-relation queries the response was YES. [2024-10-31 21:58:05,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2819 events. 1293/2819 cut-off events. For 1297/1348 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20236 event pairs, 338 based on Foata normal form. 97/2634 useless extension candidates. Maximal degree in co-relation 3384. Up to 816 conditions per place. [2024-10-31 21:58:05,550 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 90 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2024-10-31 21:58:05,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 640 flow [2024-10-31 21:58:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-10-31 21:58:05,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-31 21:58:05,552 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 250 flow. Second operand 6 states and 402 transitions. [2024-10-31 21:58:05,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 640 flow [2024-10-31 21:58:05,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:05,559 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 267 flow [2024-10-31 21:58:05,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-31 21:58:05,560 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-31 21:58:05,560 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 267 flow [2024-10-31 21:58:05,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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 21:58:05,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:05,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:05,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:58:05,562 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:05,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1132918276, now seen corresponding path program 1 times [2024-10-31 21:58:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341980701] [2024-10-31 21:58:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:05,615 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 21:58:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341980701] [2024-10-31 21:58:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341980701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:05,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:05,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537121789] [2024-10-31 21:58:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:05,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:05,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-31 21:58:05,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 21:58:05,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:05,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-31 21:58:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:06,033 INFO L124 PetriNetUnfolderBase]: 1012/2582 cut-off events. [2024-10-31 21:58:06,033 INFO L125 PetriNetUnfolderBase]: For 1882/1966 co-relation queries the response was YES. [2024-10-31 21:58:06,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2582 events. 1012/2582 cut-off events. For 1882/1966 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20144 event pairs, 331 based on Foata normal form. 103/2336 useless extension candidates. Maximal degree in co-relation 2662. Up to 817 conditions per place. [2024-10-31 21:58:06,052 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 56 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-31 21:58:06,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 457 flow [2024-10-31 21:58:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-10-31 21:58:06,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-31 21:58:06,055 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 267 flow. Second operand 4 states and 276 transitions. [2024-10-31 21:58:06,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 457 flow [2024-10-31 21:58:06,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:06,062 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 258 flow [2024-10-31 21:58:06,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-31 21:58:06,064 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-31 21:58:06,064 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 258 flow [2024-10-31 21:58:06,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 21:58:06,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:06,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:06,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:58:06,065 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:06,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash 787947419, now seen corresponding path program 1 times [2024-10-31 21:58:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:06,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744214956] [2024-10-31 21:58:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:06,138 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 21:58:06,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:06,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744214956] [2024-10-31 21:58:06,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744214956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:06,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:06,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674763958] [2024-10-31 21:58:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:06,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:06,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-31 21:58:06,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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 21:58:06,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:06,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-31 21:58:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:06,712 INFO L124 PetriNetUnfolderBase]: 1252/2772 cut-off events. [2024-10-31 21:58:06,712 INFO L125 PetriNetUnfolderBase]: For 1338/1363 co-relation queries the response was YES. [2024-10-31 21:58:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 2772 events. 1252/2772 cut-off events. For 1338/1363 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20084 event pairs, 485 based on Foata normal form. 59/2517 useless extension candidates. Maximal degree in co-relation 2883. Up to 1180 conditions per place. [2024-10-31 21:58:06,727 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 113 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-31 21:58:06,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 167 transitions, 758 flow [2024-10-31 21:58:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-10-31 21:58:06,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-10-31 21:58:06,729 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 258 flow. Second operand 6 states and 424 transitions. [2024-10-31 21:58:06,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 167 transitions, 758 flow [2024-10-31 21:58:06,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 721 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:06,739 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 274 flow [2024-10-31 21:58:06,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-31 21:58:06,740 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-31 21:58:06,741 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 274 flow [2024-10-31 21:58:06,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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 21:58:06,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:06,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:06,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:58:06,742 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:06,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 760729006, now seen corresponding path program 1 times [2024-10-31 21:58:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143950567] [2024-10-31 21:58:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:06,801 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 21:58:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143950567] [2024-10-31 21:58:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143950567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562561384] [2024-10-31 21:58:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:06,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:06,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:06,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 21:58:06,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:06,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:06,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:07,216 INFO L124 PetriNetUnfolderBase]: 1093/2619 cut-off events. [2024-10-31 21:58:07,216 INFO L125 PetriNetUnfolderBase]: For 2292/2372 co-relation queries the response was YES. [2024-10-31 21:58:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 2619 events. 1093/2619 cut-off events. For 2292/2372 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19881 event pairs, 519 based on Foata normal form. 113/2383 useless extension candidates. Maximal degree in co-relation 4102. Up to 1178 conditions per place. [2024-10-31 21:58:07,237 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 80 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-31 21:58:07,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 602 flow [2024-10-31 21:58:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-10-31 21:58:07,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-10-31 21:58:07,241 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 274 flow. Second operand 4 states and 289 transitions. [2024-10-31 21:58:07,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 602 flow [2024-10-31 21:58:07,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 559 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 21:58:07,248 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 257 flow [2024-10-31 21:58:07,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-31 21:58:07,250 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-31 21:58:07,251 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 257 flow [2024-10-31 21:58:07,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 21:58:07,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:07,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:58:07,252 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:07,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 760727981, now seen corresponding path program 1 times [2024-10-31 21:58:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436499946] [2024-10-31 21:58:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,343 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 21:58:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436499946] [2024-10-31 21:58:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436499946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572927962] [2024-10-31 21:58:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:07,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-31 21:58:07,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 21:58:07,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:07,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-31 21:58:07,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:07,812 INFO L124 PetriNetUnfolderBase]: 1264/2720 cut-off events. [2024-10-31 21:58:07,813 INFO L125 PetriNetUnfolderBase]: For 1563/1663 co-relation queries the response was YES. [2024-10-31 21:58:07,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 2720 events. 1264/2720 cut-off events. For 1563/1663 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19457 event pairs, 331 based on Foata normal form. 100/2537 useless extension candidates. Maximal degree in co-relation 4343. Up to 843 conditions per place. [2024-10-31 21:58:07,831 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 78 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-10-31 21:58:07,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 563 flow [2024-10-31 21:58:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2024-10-31 21:58:07,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2024-10-31 21:58:07,834 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 257 flow. Second operand 5 states and 347 transitions. [2024-10-31 21:58:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 563 flow [2024-10-31 21:58:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:07,840 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 261 flow [2024-10-31 21:58:07,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-10-31 21:58:07,841 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-31 21:58:07,843 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 261 flow [2024-10-31 21:58:07,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 21:58:07,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:07,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:58:07,844 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:07,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -645491785, now seen corresponding path program 1 times [2024-10-31 21:58:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470811246] [2024-10-31 21:58:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,914 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 21:58:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470811246] [2024-10-31 21:58:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470811246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910138021] [2024-10-31 21:58:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:07,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:07,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 21:58:07,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:07,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:07,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:08,388 INFO L124 PetriNetUnfolderBase]: 1379/3226 cut-off events. [2024-10-31 21:58:08,388 INFO L125 PetriNetUnfolderBase]: For 1869/1950 co-relation queries the response was YES. [2024-10-31 21:58:08,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 3226 events. 1379/3226 cut-off events. For 1869/1950 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25038 event pairs, 586 based on Foata normal form. 149/2946 useless extension candidates. Maximal degree in co-relation 5344. Up to 1307 conditions per place. [2024-10-31 21:58:08,409 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-10-31 21:58:08,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 569 flow [2024-10-31 21:58:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-31 21:58:08,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-31 21:58:08,412 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 261 flow. Second operand 4 states and 296 transitions. [2024-10-31 21:58:08,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 569 flow [2024-10-31 21:58:08,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:08,418 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 290 flow [2024-10-31 21:58:08,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-31 21:58:08,419 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2024-10-31 21:58:08,420 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 290 flow [2024-10-31 21:58:08,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 21:58:08,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:08,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:08,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 21:58:08,421 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:08,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2107731751, now seen corresponding path program 1 times [2024-10-31 21:58:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856115628] [2024-10-31 21:58:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,503 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 21:58:08,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:08,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856115628] [2024-10-31 21:58:08,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856115628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:08,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:08,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726458840] [2024-10-31 21:58:08,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:08,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:08,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:08,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-31 21:58:08,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 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 21:58:08,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:08,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-31 21:58:08,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:09,232 INFO L124 PetriNetUnfolderBase]: 1414/3063 cut-off events. [2024-10-31 21:58:09,232 INFO L125 PetriNetUnfolderBase]: For 2674/2846 co-relation queries the response was YES. [2024-10-31 21:58:09,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6782 conditions, 3063 events. 1414/3063 cut-off events. For 2674/2846 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22423 event pairs, 383 based on Foata normal form. 211/2947 useless extension candidates. Maximal degree in co-relation 5324. Up to 931 conditions per place. [2024-10-31 21:58:09,253 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 103 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-10-31 21:58:09,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 802 flow [2024-10-31 21:58:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-10-31 21:58:09,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-31 21:58:09,256 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 290 flow. Second operand 6 states and 399 transitions. [2024-10-31 21:58:09,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 802 flow [2024-10-31 21:58:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:09,266 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 315 flow [2024-10-31 21:58:09,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-10-31 21:58:09,267 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 15 predicate places. [2024-10-31 21:58:09,267 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 315 flow [2024-10-31 21:58:09,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 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 21:58:09,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:09,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:09,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 21:58:09,269 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:09,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1464591931, now seen corresponding path program 1 times [2024-10-31 21:58:09,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:09,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384292459] [2024-10-31 21:58:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:09,362 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 21:58:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384292459] [2024-10-31 21:58:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384292459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:09,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030712804] [2024-10-31 21:58:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:09,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:09,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:09,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-31 21:58:09,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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 21:58:09,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:09,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-31 21:58:09,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:10,248 INFO L124 PetriNetUnfolderBase]: 2099/4807 cut-off events. [2024-10-31 21:58:10,248 INFO L125 PetriNetUnfolderBase]: For 4844/5046 co-relation queries the response was YES. [2024-10-31 21:58:10,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 4807 events. 2099/4807 cut-off events. For 4844/5046 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 39643 event pairs, 512 based on Foata normal form. 232/4615 useless extension candidates. Maximal degree in co-relation 6345. Up to 1211 conditions per place. [2024-10-31 21:58:10,286 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 147 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2024-10-31 21:58:10,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 202 transitions, 1067 flow [2024-10-31 21:58:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2024-10-31 21:58:10,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-10-31 21:58:10,289 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 315 flow. Second operand 7 states and 486 transitions. [2024-10-31 21:58:10,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 202 transitions, 1067 flow [2024-10-31 21:58:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 202 transitions, 1009 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:10,316 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 384 flow [2024-10-31 21:58:10,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-10-31 21:58:10,317 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2024-10-31 21:58:10,317 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 384 flow [2024-10-31 21:58:10,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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 21:58:10,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:10,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:10,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 21:58:10,318 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:10,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1862492755, now seen corresponding path program 1 times [2024-10-31 21:58:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085860937] [2024-10-31 21:58:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,371 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 21:58:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085860937] [2024-10-31 21:58:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085860937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:10,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185244133] [2024-10-31 21:58:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:10,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:10,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 21:58:10,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:10,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:10,999 INFO L124 PetriNetUnfolderBase]: 2179/4833 cut-off events. [2024-10-31 21:58:10,999 INFO L125 PetriNetUnfolderBase]: For 7374/7666 co-relation queries the response was YES. [2024-10-31 21:58:11,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11694 conditions, 4833 events. 2179/4833 cut-off events. For 7374/7666 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39355 event pairs, 942 based on Foata normal form. 249/4669 useless extension candidates. Maximal degree in co-relation 7609. Up to 2118 conditions per place. [2024-10-31 21:58:11,041 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 100 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-10-31 21:58:11,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 151 transitions, 911 flow [2024-10-31 21:58:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-10-31 21:58:11,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-10-31 21:58:11,043 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 384 flow. Second operand 4 states and 287 transitions. [2024-10-31 21:58:11,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 151 transitions, 911 flow [2024-10-31 21:58:11,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 891 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:11,071 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 387 flow [2024-10-31 21:58:11,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-10-31 21:58:11,072 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2024-10-31 21:58:11,072 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 387 flow [2024-10-31 21:58:11,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 21:58:11,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:11,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:11,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 21:58:11,073 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:11,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1842321381, now seen corresponding path program 1 times [2024-10-31 21:58:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476005025] [2024-10-31 21:58:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:11,149 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 21:58:11,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:11,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476005025] [2024-10-31 21:58:11,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476005025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:11,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:11,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:11,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109326067] [2024-10-31 21:58:11,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:11,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:11,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:11,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:11,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 21:58:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:11,916 INFO L124 PetriNetUnfolderBase]: 2586/6161 cut-off events. [2024-10-31 21:58:11,916 INFO L125 PetriNetUnfolderBase]: For 8697/8892 co-relation queries the response was YES. [2024-10-31 21:58:11,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14751 conditions, 6161 events. 2586/6161 cut-off events. For 8697/8892 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 54366 event pairs, 690 based on Foata normal form. 267/5861 useless extension candidates. Maximal degree in co-relation 9214. Up to 1628 conditions per place. [2024-10-31 21:58:11,958 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 115 selfloop transitions, 10 changer transitions 0/166 dead transitions. [2024-10-31 21:58:11,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 911 flow [2024-10-31 21:58:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-10-31 21:58:11,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76875 [2024-10-31 21:58:11,960 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 387 flow. Second operand 5 states and 369 transitions. [2024-10-31 21:58:11,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 911 flow [2024-10-31 21:58:11,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:12,000 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 427 flow [2024-10-31 21:58:12,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-10-31 21:58:12,001 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 24 predicate places. [2024-10-31 21:58:12,001 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 427 flow [2024-10-31 21:58:12,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 21:58:12,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:12,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:12,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 21:58:12,002 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:12,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1694324694, now seen corresponding path program 1 times [2024-10-31 21:58:12,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:12,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427776527] [2024-10-31 21:58:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:12,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,050 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 21:58:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427776527] [2024-10-31 21:58:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427776527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:12,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:12,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901750837] [2024-10-31 21:58:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:12,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:12,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:12,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 21:58:12,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:12,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:12,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:12,942 INFO L124 PetriNetUnfolderBase]: 3213/7418 cut-off events. [2024-10-31 21:58:12,943 INFO L125 PetriNetUnfolderBase]: For 12698/13028 co-relation queries the response was YES. [2024-10-31 21:58:12,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17990 conditions, 7418 events. 3213/7418 cut-off events. For 12698/13028 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 67405 event pairs, 1525 based on Foata normal form. 432/6977 useless extension candidates. Maximal degree in co-relation 9302. Up to 3150 conditions per place. [2024-10-31 21:58:12,998 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 111 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-31 21:58:12,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1071 flow [2024-10-31 21:58:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:12,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-31 21:58:12,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-31 21:58:13,000 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 427 flow. Second operand 4 states and 294 transitions. [2024-10-31 21:58:13,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1071 flow [2024-10-31 21:58:13,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 1036 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:13,057 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 456 flow [2024-10-31 21:58:13,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-10-31 21:58:13,057 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-10-31 21:58:13,058 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 456 flow [2024-10-31 21:58:13,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 21:58:13,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:13,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 21:58:13,058 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1277388195, now seen corresponding path program 1 times [2024-10-31 21:58:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672246549] [2024-10-31 21:58:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,247 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 21:58:13,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672246549] [2024-10-31 21:58:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672246549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:13,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:13,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219818447] [2024-10-31 21:58:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:13,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:58:13,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:13,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:58:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:58:13,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-31 21:58:13,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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 21:58:13,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:13,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-31 21:58:13,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:14,753 INFO L124 PetriNetUnfolderBase]: 4198/7932 cut-off events. [2024-10-31 21:58:14,754 INFO L125 PetriNetUnfolderBase]: For 12507/13024 co-relation queries the response was YES. [2024-10-31 21:58:14,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 7932 events. 4198/7932 cut-off events. For 12507/13024 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 62045 event pairs, 200 based on Foata normal form. 417/8046 useless extension candidates. Maximal degree in co-relation 19868. Up to 3397 conditions per place. [2024-10-31 21:58:14,823 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 136 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-10-31 21:58:14,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1186 flow [2024-10-31 21:58:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2024-10-31 21:58:14,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-31 21:58:14,825 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 456 flow. Second operand 7 states and 462 transitions. [2024-10-31 21:58:14,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1186 flow [2024-10-31 21:58:14,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 1186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:14,914 INFO L231 Difference]: Finished difference. Result has 120 places, 99 transitions, 486 flow [2024-10-31 21:58:14,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2024-10-31 21:58:14,915 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 31 predicate places. [2024-10-31 21:58:14,915 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 486 flow [2024-10-31 21:58:14,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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 21:58:14,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:14,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:14,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 21:58:14,916 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:14,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1942041184, now seen corresponding path program 1 times [2024-10-31 21:58:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024066541] [2024-10-31 21:58:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,975 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 21:58:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024066541] [2024-10-31 21:58:14,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024066541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735552845] [2024-10-31 21:58:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:14,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:14,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-31 21:58:14,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 21:58:14,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:14,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-31 21:58:14,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:15,718 INFO L124 PetriNetUnfolderBase]: 2584/6344 cut-off events. [2024-10-31 21:58:15,718 INFO L125 PetriNetUnfolderBase]: For 15151/15458 co-relation queries the response was YES. [2024-10-31 21:58:15,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 6344 events. 2584/6344 cut-off events. For 15151/15458 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 57497 event pairs, 643 based on Foata normal form. 305/6249 useless extension candidates. Maximal degree in co-relation 12348. Up to 2330 conditions per place. [2024-10-31 21:58:15,769 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 66 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-10-31 21:58:15,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 743 flow [2024-10-31 21:58:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-31 21:58:15,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-31 21:58:15,771 INFO L175 Difference]: Start difference. First operand has 120 places, 99 transitions, 486 flow. Second operand 4 states and 281 transitions. [2024-10-31 21:58:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 743 flow [2024-10-31 21:58:15,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 716 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 21:58:15,850 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 477 flow [2024-10-31 21:58:15,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-10-31 21:58:15,851 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2024-10-31 21:58:15,851 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 477 flow [2024-10-31 21:58:15,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 21:58:15,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:15,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:15,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 21:58:15,851 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:15,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -984457133, now seen corresponding path program 1 times [2024-10-31 21:58:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:15,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842129651] [2024-10-31 21:58:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:15,928 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 21:58:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842129651] [2024-10-31 21:58:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842129651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:15,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508911962] [2024-10-31 21:58:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:15,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:15,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:16,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-31 21:58:16,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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 21:58:16,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:16,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-31 21:58:16,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:17,473 INFO L124 PetriNetUnfolderBase]: 4596/10389 cut-off events. [2024-10-31 21:58:17,473 INFO L125 PetriNetUnfolderBase]: For 23319/23782 co-relation queries the response was YES. [2024-10-31 21:58:17,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27215 conditions, 10389 events. 4596/10389 cut-off events. For 23319/23782 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 98430 event pairs, 1184 based on Foata normal form. 513/10075 useless extension candidates. Maximal degree in co-relation 16215. Up to 2698 conditions per place. [2024-10-31 21:58:17,542 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 201 selfloop transitions, 13 changer transitions 0/253 dead transitions. [2024-10-31 21:58:17,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 253 transitions, 2013 flow [2024-10-31 21:58:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2024-10-31 21:58:17,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2024-10-31 21:58:17,545 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 477 flow. Second operand 7 states and 481 transitions. [2024-10-31 21:58:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 253 transitions, 2013 flow [2024-10-31 21:58:17,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 253 transitions, 1891 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:17,693 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 528 flow [2024-10-31 21:58:17,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-10-31 21:58:17,694 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 33 predicate places. [2024-10-31 21:58:17,694 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 528 flow [2024-10-31 21:58:17,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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 21:58:17,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:17,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:17,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 21:58:17,695 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:17,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:17,696 INFO L85 PathProgramCache]: Analyzing trace with hash -944327586, now seen corresponding path program 1 times [2024-10-31 21:58:17,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:17,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459387911] [2024-10-31 21:58:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,871 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 21:58:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459387911] [2024-10-31 21:58:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459387911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:17,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:58:17,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173810382] [2024-10-31 21:58:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:17,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:18,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-31 21:58:18,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 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 21:58:18,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-31 21:58:18,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:19,649 INFO L124 PetriNetUnfolderBase]: 5379/10327 cut-off events. [2024-10-31 21:58:19,649 INFO L125 PetriNetUnfolderBase]: For 26270/27285 co-relation queries the response was YES. [2024-10-31 21:58:19,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30088 conditions, 10327 events. 5379/10327 cut-off events. For 26270/27285 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 85795 event pairs, 286 based on Foata normal form. 947/10838 useless extension candidates. Maximal degree in co-relation 27492. Up to 2416 conditions per place. [2024-10-31 21:58:19,702 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 205 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-10-31 21:58:19,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 265 transitions, 1962 flow [2024-10-31 21:58:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2024-10-31 21:58:19,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261574074074074 [2024-10-31 21:58:19,705 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 528 flow. Second operand 9 states and 541 transitions. [2024-10-31 21:58:19,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 265 transitions, 1962 flow [2024-10-31 21:58:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 265 transitions, 1904 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:19,866 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 572 flow [2024-10-31 21:58:19,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-10-31 21:58:19,867 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-31 21:58:19,867 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 572 flow [2024-10-31 21:58:19,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 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 21:58:19,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:19,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:19,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 21:58:19,868 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:19,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -650189322, now seen corresponding path program 1 times [2024-10-31 21:58:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518126283] [2024-10-31 21:58:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,921 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 21:58:19,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:19,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518126283] [2024-10-31 21:58:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518126283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614228999] [2024-10-31 21:58:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:19,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:19,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-31 21:58:19,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 21:58:19,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:19,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-31 21:58:19,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:20,711 INFO L124 PetriNetUnfolderBase]: 3856/8972 cut-off events. [2024-10-31 21:58:20,711 INFO L125 PetriNetUnfolderBase]: For 28065/28702 co-relation queries the response was YES. [2024-10-31 21:58:20,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26481 conditions, 8972 events. 3856/8972 cut-off events. For 28065/28702 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 83986 event pairs, 925 based on Foata normal form. 475/9158 useless extension candidates. Maximal degree in co-relation 17768. Up to 3639 conditions per place. [2024-10-31 21:58:20,764 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 76 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-10-31 21:58:20,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 893 flow [2024-10-31 21:58:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-31 21:58:20,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-31 21:58:20,765 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 572 flow. Second operand 4 states and 277 transitions. [2024-10-31 21:58:20,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 893 flow [2024-10-31 21:58:20,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 129 transitions, 853 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:20,872 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 546 flow [2024-10-31 21:58:20,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-10-31 21:58:20,872 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2024-10-31 21:58:20,873 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 546 flow [2024-10-31 21:58:20,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 21:58:20,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:20,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:20,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-31 21:58:20,873 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:20,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -453430994, now seen corresponding path program 1 times [2024-10-31 21:58:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:20,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409299356] [2024-10-31 21:58:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,939 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 21:58:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:20,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409299356] [2024-10-31 21:58:20,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409299356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:20,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:20,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536601406] [2024-10-31 21:58:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:20,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:20,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-31 21:58:20,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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 21:58:20,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:20,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-31 21:58:20,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:22,755 INFO L124 PetriNetUnfolderBase]: 5142/12284 cut-off events. [2024-10-31 21:58:22,755 INFO L125 PetriNetUnfolderBase]: For 33279/34107 co-relation queries the response was YES. [2024-10-31 21:58:22,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33831 conditions, 12284 events. 5142/12284 cut-off events. For 33279/34107 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 124009 event pairs, 1425 based on Foata normal form. 910/12205 useless extension candidates. Maximal degree in co-relation 18625. Up to 3305 conditions per place. [2024-10-31 21:58:22,825 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2024-10-31 21:58:22,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 199 transitions, 1578 flow [2024-10-31 21:58:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2024-10-31 21:58:22,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-10-31 21:58:22,828 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 546 flow. Second operand 5 states and 366 transitions. [2024-10-31 21:58:22,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 199 transitions, 1578 flow [2024-10-31 21:58:22,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 1496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:22,969 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 568 flow [2024-10-31 21:58:22,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2024-10-31 21:58:22,970 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 36 predicate places. [2024-10-31 21:58:22,970 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 568 flow [2024-10-31 21:58:22,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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 21:58:22,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:22,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:22,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-31 21:58:22,972 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:22,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash 790616703, now seen corresponding path program 1 times [2024-10-31 21:58:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:22,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162048757] [2024-10-31 21:58:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:23,028 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 21:58:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:23,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162048757] [2024-10-31 21:58:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162048757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:23,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:23,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436762589] [2024-10-31 21:58:23,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:23,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:23,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:23,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-31 21:58:23,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 21:58:23,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:23,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-31 21:58:23,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:26,609 INFO L124 PetriNetUnfolderBase]: 9368/22151 cut-off events. [2024-10-31 21:58:26,609 INFO L125 PetriNetUnfolderBase]: For 60546/61858 co-relation queries the response was YES. [2024-10-31 21:58:26,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62959 conditions, 22151 events. 9368/22151 cut-off events. For 60546/61858 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 229441 event pairs, 5076 based on Foata normal form. 1136/22211 useless extension candidates. Maximal degree in co-relation 57863. Up to 7515 conditions per place. [2024-10-31 21:58:26,773 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 137 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2024-10-31 21:58:26,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1463 flow [2024-10-31 21:58:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-10-31 21:58:26,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2024-10-31 21:58:26,775 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 568 flow. Second operand 4 states and 317 transitions. [2024-10-31 21:58:26,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1463 flow [2024-10-31 21:58:27,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:27,139 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 687 flow [2024-10-31 21:58:27,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2024-10-31 21:58:27,140 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-31 21:58:27,140 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 687 flow [2024-10-31 21:58:27,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 21:58:27,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:27,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:27,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-31 21:58:27,141 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-31 21:58:27,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2010155709, now seen corresponding path program 1 times [2024-10-31 21:58:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954552191] [2024-10-31 21:58:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat