./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX --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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:09:20,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:09:20,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:09:20,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:09:20,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:09:20,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:09:20,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:09:20,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:09:20,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:09:20,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:09:20,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:09:20,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:09:20,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:09:20,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:09:20,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:09:20,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:09:20,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:09:20,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:09:20,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:09:20,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:09:20,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:09:20,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:09:20,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:09:20,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:09:20,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:09:20,605 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:09:20,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:09:20,608 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:09:20,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:09:20,609 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:09:20,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:09:20,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:09:20,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:09:20,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:09:20,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:20,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:09:20,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:09:20,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:09:20,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:09:20,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:09:20,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:09:20,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:09:20,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:09:20,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:09:20,617 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_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-08 18:09:20,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:09:20,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:09:20,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:09:20,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:09:20,986 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:09:20,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c Unable to find full path for "g++" [2024-11-08 18:09:23,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:09:23,834 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:09:23,835 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-08 18:09:23,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/data/b02bfa56c/8d15ea949fc242f2b04a63871d47e907/FLAG4f840859d [2024-11-08 18:09:23,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/data/b02bfa56c/8d15ea949fc242f2b04a63871d47e907 [2024-11-08 18:09:23,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:09:23,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:09:23,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:23,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:09:23,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:09:23,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:23" (1/1) ... [2024-11-08 18:09:23,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f1390f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:23, skipping insertion in model container [2024-11-08 18:09:23,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:23" (1/1) ... [2024-11-08 18:09:23,939 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:09:24,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:24,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:09:24,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:24,282 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:09:24,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24 WrapperNode [2024-11-08 18:09:24,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:24,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:24,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:09:24,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:09:24,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,333 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2024-11-08 18:09:24,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:24,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:09:24,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:09:24,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:09:24,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,383 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]. [2024-11-08 18:09:24,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:09:24,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:09:24,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:09:24,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:09:24,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (1/1) ... [2024-11-08 18:09:24,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:24,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:24,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:09:24,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea0a3a8-8b7d-4896-b118-feba2bdf8fe6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:09:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:09:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:09:24,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:09:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:09:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:09:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:09:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:09:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 18:09:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 18:09:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:09:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:09:24,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:09:24,502 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:09:24,630 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:09:24,633 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:09:24,991 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:09:24,991 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:09:25,271 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:09:25,271 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:09:25,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:25 BoogieIcfgContainer [2024-11-08 18:09:25,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:09:25,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:09:25,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:09:25,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:09:25,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:09:23" (1/3) ... [2024-11-08 18:09:25,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae8d361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:25, skipping insertion in model container [2024-11-08 18:09:25,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:24" (2/3) ... [2024-11-08 18:09:25,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae8d361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:25, skipping insertion in model container [2024-11-08 18:09:25,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:25" (3/3) ... [2024-11-08 18:09:25,292 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-08 18:09:25,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:09:25,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-08 18:09:25,317 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:09:25,460 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:09:25,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 176 flow [2024-11-08 18:09:25,614 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-11-08 18:09:25,614 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:09:25,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 70 events. 8/70 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 209 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-08 18:09:25,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 176 flow [2024-11-08 18:09:25,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 68 transitions, 157 flow [2024-11-08 18:09:25,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:09:25,663 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;@3c307b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:09:25,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-08 18:09:25,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:09:25,671 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-08 18:09:25,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:09:25,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:25,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:09:25,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:25,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1284213913, now seen corresponding path program 1 times [2024-11-08 18:09:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:25,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061572990] [2024-11-08 18:09:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061572990] [2024-11-08 18:09:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061572990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:26,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850847249] [2024-11-08 18:09:26,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:26,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:26,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-08 18:09:26,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:26,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:26,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-08 18:09:26,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:32,699 INFO L124 PetriNetUnfolderBase]: 29671/45868 cut-off events. [2024-11-08 18:09:32,699 INFO L125 PetriNetUnfolderBase]: For 1927/1927 co-relation queries the response was YES. [2024-11-08 18:09:32,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84502 conditions, 45868 events. 29671/45868 cut-off events. For 1927/1927 co-relation queries the response was YES. Maximal size of possible extension queue 2569. Compared 382137 event pairs, 13092 based on Foata normal form. 0/35849 useless extension candidates. Maximal degree in co-relation 78649. Up to 20574 conditions per place. [2024-11-08 18:09:33,211 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 70 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-08 18:09:33,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 384 flow [2024-11-08 18:09:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-08 18:09:33,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-11-08 18:09:33,232 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 157 flow. Second operand 3 states and 166 transitions. [2024-11-08 18:09:33,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 384 flow [2024-11-08 18:09:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 362 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 18:09:33,309 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 168 flow [2024-11-08 18:09:33,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-11-08 18:09:33,319 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2024-11-08 18:09:33,322 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 168 flow [2024-11-08 18:09:33,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:33,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:33,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:09:33,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:09:33,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:33,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1284213912, now seen corresponding path program 1 times [2024-11-08 18:09:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:33,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228952586] [2024-11-08 18:09:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:33,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228952586] [2024-11-08 18:09:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228952586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:33,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556727649] [2024-11-08 18:09:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:33,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:33,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-08 18:09:33,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:33,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:33,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-08 18:09:33,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:38,432 INFO L124 PetriNetUnfolderBase]: 29048/44484 cut-off events. [2024-11-08 18:09:38,432 INFO L125 PetriNetUnfolderBase]: For 6573/6573 co-relation queries the response was YES. [2024-11-08 18:09:38,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87467 conditions, 44484 events. 29048/44484 cut-off events. For 6573/6573 co-relation queries the response was YES. Maximal size of possible extension queue 1974. Compared 355641 event pairs, 7534 based on Foata normal form. 949/38134 useless extension candidates. Maximal degree in co-relation 46245. Up to 29137 conditions per place. [2024-11-08 18:09:38,954 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 71 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-08 18:09:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 385 flow [2024-11-08 18:09:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-08 18:09:38,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-11-08 18:09:38,957 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 168 flow. Second operand 3 states and 164 transitions. [2024-11-08 18:09:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 385 flow [2024-11-08 18:09:39,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:09:39,155 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 179 flow [2024-11-08 18:09:39,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-11-08 18:09:39,158 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-11-08 18:09:39,160 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 179 flow [2024-11-08 18:09:39,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:39,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:39,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:39,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:09:39,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:39,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1473941398, now seen corresponding path program 1 times [2024-11-08 18:09:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416382024] [2024-11-08 18:09:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:39,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:39,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416382024] [2024-11-08 18:09:39,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416382024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:39,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:39,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:09:39,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165086404] [2024-11-08 18:09:39,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:39,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:09:39,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:09:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:39,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 74 [2024-11-08 18:09:39,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:39,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:39,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 74 [2024-11-08 18:09:39,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:45,208 INFO L124 PetriNetUnfolderBase]: 44979/68298 cut-off events. [2024-11-08 18:09:45,208 INFO L125 PetriNetUnfolderBase]: For 15740/15740 co-relation queries the response was YES. [2024-11-08 18:09:45,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137346 conditions, 68298 events. 44979/68298 cut-off events. For 15740/15740 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 563338 event pairs, 25311 based on Foata normal form. 1154/57951 useless extension candidates. Maximal degree in co-relation 62342. Up to 45801 conditions per place. [2024-11-08 18:09:45,720 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 105 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-08 18:09:45,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 133 transitions, 551 flow [2024-11-08 18:09:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:09:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:09:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-08 18:09:45,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7398648648648649 [2024-11-08 18:09:45,724 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 179 flow. Second operand 4 states and 219 transitions. [2024-11-08 18:09:45,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 133 transitions, 551 flow [2024-11-08 18:09:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 133 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:09:45,749 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 205 flow [2024-11-08 18:09:45,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-11-08 18:09:45,751 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2024-11-08 18:09:45,752 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 205 flow [2024-11-08 18:09:45,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:45,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:45,753 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:45,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:09:45,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:45,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1925931447, now seen corresponding path program 1 times [2024-11-08 18:09:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761664528] [2024-11-08 18:09:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:45,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761664528] [2024-11-08 18:09:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761664528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:45,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760392275] [2024-11-08 18:09:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:45,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:45,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-08 18:09:45,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:45,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:45,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-08 18:09:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:51,655 INFO L124 PetriNetUnfolderBase]: 39990/63567 cut-off events. [2024-11-08 18:09:51,656 INFO L125 PetriNetUnfolderBase]: For 24114/24925 co-relation queries the response was YES. [2024-11-08 18:09:51,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135669 conditions, 63567 events. 39990/63567 cut-off events. For 24114/24925 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 547825 event pairs, 18817 based on Foata normal form. 0/55735 useless extension candidates. Maximal degree in co-relation 61309. Up to 29564 conditions per place. [2024-11-08 18:09:52,094 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 76 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-11-08 18:09:52,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 477 flow [2024-11-08 18:09:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-08 18:09:52,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2024-11-08 18:09:52,097 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 205 flow. Second operand 3 states and 160 transitions. [2024-11-08 18:09:52,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 477 flow [2024-11-08 18:09:52,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:09:52,183 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 226 flow [2024-11-08 18:09:52,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-11-08 18:09:52,184 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-08 18:09:52,185 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 226 flow [2024-11-08 18:09:52,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:52,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:52,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:52,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:09:52,186 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:52,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1925931448, now seen corresponding path program 1 times [2024-11-08 18:09:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:52,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933818469] [2024-11-08 18:09:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:52,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933818469] [2024-11-08 18:09:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933818469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:52,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:52,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77465159] [2024-11-08 18:09:52,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:52,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:52,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-08 18:09:52,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:52,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:52,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-08 18:09:52,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:57,988 INFO L124 PetriNetUnfolderBase]: 39476/62144 cut-off events. [2024-11-08 18:09:57,988 INFO L125 PetriNetUnfolderBase]: For 31113/33031 co-relation queries the response was YES. [2024-11-08 18:09:58,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138785 conditions, 62144 events. 39476/62144 cut-off events. For 31113/33031 co-relation queries the response was YES. Maximal size of possible extension queue 2077. Compared 510480 event pairs, 10252 based on Foata normal form. 1316/58825 useless extension candidates. Maximal degree in co-relation 81117. Up to 38504 conditions per place. [2024-11-08 18:09:58,444 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 77 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-08 18:09:58,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 495 flow [2024-11-08 18:09:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-08 18:09:58,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-11-08 18:09:58,447 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 226 flow. Second operand 3 states and 158 transitions. [2024-11-08 18:09:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 495 flow [2024-11-08 18:09:58,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:09:58,857 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 237 flow [2024-11-08 18:09:58,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-08 18:09:58,859 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-08 18:09:58,859 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 237 flow [2024-11-08 18:09:58,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:58,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:58,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:58,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:09:58,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:09:58,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1832989913, now seen corresponding path program 1 times [2024-11-08 18:09:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868587535] [2024-11-08 18:09:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868587535] [2024-11-08 18:09:58,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868587535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:58,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:58,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:09:58,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154991417] [2024-11-08 18:09:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:58,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:09:58,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:09:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:58,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-08 18:09:58,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:58,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:58,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-08 18:09:58,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:10:08,586 INFO L124 PetriNetUnfolderBase]: 61949/98041 cut-off events. [2024-11-08 18:10:08,586 INFO L125 PetriNetUnfolderBase]: For 60852/64042 co-relation queries the response was YES. [2024-11-08 18:10:08,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224403 conditions, 98041 events. 61949/98041 cut-off events. For 60852/64042 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 850857 event pairs, 15866 based on Foata normal form. 3434/93850 useless extension candidates. Maximal degree in co-relation 86772. Up to 31457 conditions per place. [2024-11-08 18:10:09,402 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 119 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2024-11-08 18:10:09,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 152 transitions, 749 flow [2024-11-08 18:10:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:10:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:10:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-08 18:10:09,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7837837837837838 [2024-11-08 18:10:09,404 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 237 flow. Second operand 4 states and 232 transitions. [2024-11-08 18:10:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 152 transitions, 749 flow [2024-11-08 18:10:09,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 152 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:10:09,435 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 299 flow [2024-11-08 18:10:09,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-08 18:10:09,437 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-11-08 18:10:09,437 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 299 flow [2024-11-08 18:10:09,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:09,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:10:09,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:09,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:10:09,439 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 18:10:09,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash -310768070, now seen corresponding path program 1 times [2024-11-08 18:10:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213718598] [2024-11-08 18:10:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:09,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:09,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213718598] [2024-11-08 18:10:09,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213718598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:09,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:10:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107603172] [2024-11-08 18:10:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:09,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:10:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:09,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:10:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:10:09,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 74 [2024-11-08 18:10:09,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:09,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:10:09,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 74 [2024-11-08 18:10:09,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand