./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme --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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:18,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:18,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:53:18,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:18,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:18,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:18,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:18,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:18,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:18,974 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:18,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:18,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:18,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:18,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:18,979 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:18,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:18,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:18,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:18,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:18,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:18,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:18,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:18,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:18,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:18,985 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:18,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:18,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:18,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:18,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:18,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:18,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:18,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:18,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:18,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:18,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:18,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:18,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:18,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:18,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:18,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:18,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:18,993 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:18,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:18,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:18,995 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_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2023-11-26 11:53:19,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:19,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:19,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:19,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:19,369 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:19,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread/stateful01-2.i [2023-11-26 11:53:22,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:22,720 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:22,736 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/sv-benchmarks/c/pthread/stateful01-2.i [2023-11-26 11:53:22,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/data/066284f92/b077ab879798408aaa60d8f3fc3a3d89/FLAGd8947d025 [2023-11-26 11:53:22,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/data/066284f92/b077ab879798408aaa60d8f3fc3a3d89 [2023-11-26 11:53:22,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:22,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:22,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:22,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:22,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:22,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:22" (1/1) ... [2023-11-26 11:53:22,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c6f8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:22, skipping insertion in model container [2023-11-26 11:53:22,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:22" (1/1) ... [2023-11-26 11:53:22,832 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:23,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:23,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:23,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:23,430 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:23,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23 WrapperNode [2023-11-26 11:53:23,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:23,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:23,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:23,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:23,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,488 INFO L138 Inliner]: procedures = 169, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-26 11:53:23,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:23,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:23,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:23,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:23,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,526 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 5, 2, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2023-11-26 11:53:23,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:23,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:23,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:23,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:23,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (1/1) ... [2023-11-26 11:53:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:23,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:53:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:53:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:53:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:53:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:53:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:53:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:53:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:53:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:53:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:53:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:23,643 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:53:23,794 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:23,796 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:24,097 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:24,335 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:24,335 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:53:24,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:24 BoogieIcfgContainer [2023-11-26 11:53:24,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:24,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:24,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:24,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:24,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:22" (1/3) ... [2023-11-26 11:53:24,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d3116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:24, skipping insertion in model container [2023-11-26 11:53:24,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:23" (2/3) ... [2023-11-26 11:53:24,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d3116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:24, skipping insertion in model container [2023-11-26 11:53:24,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:24" (3/3) ... [2023-11-26 11:53:24,361 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-11-26 11:53:24,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:24,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:24,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 11:53:24,381 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:24,442 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:53:24,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 45 transitions, 104 flow [2023-11-26 11:53:24,541 INFO L124 PetriNetUnfolderBase]: 0/43 cut-off events. [2023-11-26 11:53:24,541 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:53:24,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 0/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-26 11:53:24,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 45 transitions, 104 flow [2023-11-26 11:53:24,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 41 transitions, 91 flow [2023-11-26 11:53:24,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:24,582 INFO L357 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, mHoare=true, 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;@272aae5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:24,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-26 11:53:24,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:24,589 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 11:53:24,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:24,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:24,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:53:24,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:24,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash 83621737, now seen corresponding path program 1 times [2023-11-26 11:53:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:24,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352897060] [2023-11-26 11:53:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352897060] [2023-11-26 11:53:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352897060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052405061] [2023-11-26 11:53:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:25,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:25,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:25,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-26 11:53:25,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:25,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:25,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:25,411 INFO L124 PetriNetUnfolderBase]: 294/668 cut-off events. [2023-11-26 11:53:25,411 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-26 11:53:25,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 668 events. 294/668 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3631 event pairs, 240 based on Foata normal form. 42/634 useless extension candidates. Maximal degree in co-relation 1151. Up to 439 conditions per place. [2023-11-26 11:53:25,433 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 33 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-26 11:53:25,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 184 flow [2023-11-26 11:53:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2023-11-26 11:53:25,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2023-11-26 11:53:25,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 103 transitions. [2023-11-26 11:53:25,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 103 transitions. [2023-11-26 11:53:25,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:25,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 103 transitions. [2023-11-26 11:53:25,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-11-26 11:53:25,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 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) [2023-11-26 11:53:25,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 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) [2023-11-26 11:53:25,460 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 91 flow. Second operand 4 states and 103 transitions. [2023-11-26 11:53:25,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 184 flow [2023-11-26 11:53:25,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:25,466 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 88 flow [2023-11-26 11:53:25,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-26 11:53:25,471 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-11-26 11:53:25,472 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 88 flow [2023-11-26 11:53:25,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-26 11:53:25,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:25,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:25,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:25,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:25,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1702693148, now seen corresponding path program 1 times [2023-11-26 11:53:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310302620] [2023-11-26 11:53:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:25,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:25,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310302620] [2023-11-26 11:53:25,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310302620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:25,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:25,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046267430] [2023-11-26 11:53:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:25,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:25,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:25,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-26 11:53:25,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:25,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:25,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:25,842 INFO L124 PetriNetUnfolderBase]: 290/652 cut-off events. [2023-11-26 11:53:25,842 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-26 11:53:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 652 events. 290/652 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3399 event pairs, 125 based on Foata normal form. 18/624 useless extension candidates. Maximal degree in co-relation 1043. Up to 478 conditions per place. [2023-11-26 11:53:25,848 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 39 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-26 11:53:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 228 flow [2023-11-26 11:53:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-26 11:53:25,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2023-11-26 11:53:25,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-26 11:53:25,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-26 11:53:25,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:25,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-26 11:53:25,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 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) [2023-11-26 11:53:25,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:25,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:25,868 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 88 flow. Second operand 5 states and 129 transitions. [2023-11-26 11:53:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 228 flow [2023-11-26 11:53:25,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:25,875 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 126 flow [2023-11-26 11:53:25,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-26 11:53:25,876 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-11-26 11:53:25,876 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 126 flow [2023-11-26 11:53:25,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-26 11:53:25,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:25,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:25,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:53:25,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:25,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash 86362509, now seen corresponding path program 1 times [2023-11-26 11:53:25,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994613719] [2023-11-26 11:53:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:25,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:26,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994613719] [2023-11-26 11:53:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994613719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:26,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826707661] [2023-11-26 11:53:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:26,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:26,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:26,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:26,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:26,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:26,275 INFO L124 PetriNetUnfolderBase]: 352/740 cut-off events. [2023-11-26 11:53:26,275 INFO L125 PetriNetUnfolderBase]: For 100/110 co-relation queries the response was YES. [2023-11-26 11:53:26,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 740 events. 352/740 cut-off events. For 100/110 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3645 event pairs, 170 based on Foata normal form. 45/725 useless extension candidates. Maximal degree in co-relation 1403. Up to 365 conditions per place. [2023-11-26 11:53:26,281 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 47 selfloop transitions, 6 changer transitions 8/73 dead transitions. [2023-11-26 11:53:26,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 318 flow [2023-11-26 11:53:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2023-11-26 11:53:26,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2023-11-26 11:53:26,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 139 transitions. [2023-11-26 11:53:26,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 139 transitions. [2023-11-26 11:53:26,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:26,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 139 transitions. [2023-11-26 11:53:26,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2023-11-26 11:53:26,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:26,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:26,287 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 126 flow. Second operand 5 states and 139 transitions. [2023-11-26 11:53:26,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 318 flow [2023-11-26 11:53:26,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:26,292 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 162 flow [2023-11-26 11:53:26,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-26 11:53:26,294 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-11-26 11:53:26,294 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 162 flow [2023-11-26 11:53:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:26,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:26,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:26,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:26,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:26,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1617729208, now seen corresponding path program 1 times [2023-11-26 11:53:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:26,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262839118] [2023-11-26 11:53:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:26,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:26,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262839118] [2023-11-26 11:53:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262839118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:26,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:26,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610631154] [2023-11-26 11:53:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:26,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:26,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:26,650 INFO L124 PetriNetUnfolderBase]: 264/584 cut-off events. [2023-11-26 11:53:26,650 INFO L125 PetriNetUnfolderBase]: For 269/283 co-relation queries the response was YES. [2023-11-26 11:53:26,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 584 events. 264/584 cut-off events. For 269/283 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2819 event pairs, 143 based on Foata normal form. 43/621 useless extension candidates. Maximal degree in co-relation 1275. Up to 264 conditions per place. [2023-11-26 11:53:26,658 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 43 selfloop transitions, 4 changer transitions 4/63 dead transitions. [2023-11-26 11:53:26,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 304 flow [2023-11-26 11:53:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-11-26 11:53:26,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2023-11-26 11:53:26,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2023-11-26 11:53:26,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2023-11-26 11:53:26,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:26,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2023-11-26 11:53:26,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-11-26 11:53:26,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 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) [2023-11-26 11:53:26,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 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) [2023-11-26 11:53:26,676 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 162 flow. Second operand 4 states and 112 transitions. [2023-11-26 11:53:26,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 304 flow [2023-11-26 11:53:26,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:26,681 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 160 flow [2023-11-26 11:53:26,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-11-26 11:53:26,682 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-11-26 11:53:26,683 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 160 flow [2023-11-26 11:53:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:26,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:26,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:26,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:53:26,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:26,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1744806690, now seen corresponding path program 1 times [2023-11-26 11:53:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993461250] [2023-11-26 11:53:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993461250] [2023-11-26 11:53:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993461250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:26,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131933428] [2023-11-26 11:53:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:26,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:26,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2023-11-26 11:53:26,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-26 11:53:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:26,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2023-11-26 11:53:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:26,909 INFO L124 PetriNetUnfolderBase]: 117/354 cut-off events. [2023-11-26 11:53:26,909 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-26 11:53:26,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 354 events. 117/354 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1508 event pairs, 35 based on Foata normal form. 40/389 useless extension candidates. Maximal degree in co-relation 786. Up to 172 conditions per place. [2023-11-26 11:53:26,913 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 26 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-11-26 11:53:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 234 flow [2023-11-26 11:53:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-26 11:53:26,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962962962962963 [2023-11-26 11:53:26,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-26 11:53:26,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-26 11:53:26,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:26,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-26 11:53:26,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-26 11:53:26,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-26 11:53:26,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-26 11:53:26,918 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 160 flow. Second operand 3 states and 94 transitions. [2023-11-26 11:53:26,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 234 flow [2023-11-26 11:53:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 215 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:26,922 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 146 flow [2023-11-26 11:53:26,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-26 11:53:26,923 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2023-11-26 11:53:26,923 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 146 flow [2023-11-26 11:53:26,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-26 11:53:26,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:26,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:26,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:53:26,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:26,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1111442776, now seen corresponding path program 1 times [2023-11-26 11:53:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020943941] [2023-11-26 11:53:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020943941] [2023-11-26 11:53:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020943941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945167248] [2023-11-26 11:53:27,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:27,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:27,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-26 11:53:27,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:27,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:27,173 INFO L124 PetriNetUnfolderBase]: 122/348 cut-off events. [2023-11-26 11:53:27,173 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-11-26 11:53:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 348 events. 122/348 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1450 event pairs, 20 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 481. Up to 186 conditions per place. [2023-11-26 11:53:27,177 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 40 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-11-26 11:53:27,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 290 flow [2023-11-26 11:53:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2023-11-26 11:53:27,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-26 11:53:27,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2023-11-26 11:53:27,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2023-11-26 11:53:27,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:27,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2023-11-26 11:53:27,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:53:27,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:27,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-26 11:53:27,182 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 146 flow. Second operand 5 states and 125 transitions. [2023-11-26 11:53:27,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 290 flow [2023-11-26 11:53:27,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:27,185 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 144 flow [2023-11-26 11:53:27,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-11-26 11:53:27,186 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-11-26 11:53:27,186 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 144 flow [2023-11-26 11:53:27,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-26 11:53:27,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:27,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:27,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:27,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:27,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1056806449, now seen corresponding path program 1 times [2023-11-26 11:53:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858877884] [2023-11-26 11:53:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:27,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:27,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858877884] [2023-11-26 11:53:27,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858877884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316141791] [2023-11-26 11:53:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:27,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:27,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:27,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-26 11:53:27,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:27,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:27,453 INFO L124 PetriNetUnfolderBase]: 117/331 cut-off events. [2023-11-26 11:53:27,453 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-11-26 11:53:27,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 331 events. 117/331 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1340 event pairs, 40 based on Foata normal form. 6/332 useless extension candidates. Maximal degree in co-relation 459. Up to 201 conditions per place. [2023-11-26 11:53:27,456 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 37 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2023-11-26 11:53:27,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 269 flow [2023-11-26 11:53:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2023-11-26 11:53:27,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2023-11-26 11:53:27,459 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2023-11-26 11:53:27,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2023-11-26 11:53:27,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:27,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2023-11-26 11:53:27,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2023-11-26 11:53:27,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:53:27,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:53:27,462 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 144 flow. Second operand 6 states and 139 transitions. [2023-11-26 11:53:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 269 flow [2023-11-26 11:53:27,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 257 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:53:27,466 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 140 flow [2023-11-26 11:53:27,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-11-26 11:53:27,467 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-11-26 11:53:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 140 flow [2023-11-26 11:53:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-26 11:53:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:27,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:53:27,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:27,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1793871282, now seen corresponding path program 1 times [2023-11-26 11:53:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:27,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642537885] [2023-11-26 11:53:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:27,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:27,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642537885] [2023-11-26 11:53:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642537885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:27,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:27,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:27,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472262639] [2023-11-26 11:53:27,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:27,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:27,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:27,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:27,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:53:27,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2023-11-26 11:53:27,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:27,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:53:27,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:27,713 INFO L124 PetriNetUnfolderBase]: 123/339 cut-off events. [2023-11-26 11:53:27,714 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-26 11:53:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 339 events. 123/339 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1326 event pairs, 49 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 461. Up to 130 conditions per place. [2023-11-26 11:53:27,716 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 32 selfloop transitions, 4 changer transitions 19/65 dead transitions. [2023-11-26 11:53:27,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 324 flow [2023-11-26 11:53:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2023-11-26 11:53:27,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2023-11-26 11:53:27,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 149 transitions. [2023-11-26 11:53:27,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 149 transitions. [2023-11-26 11:53:27,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:27,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 149 transitions. [2023-11-26 11:53:27,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2023-11-26 11:53:27,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:53:27,721 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:53:27,721 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 140 flow. Second operand 6 states and 149 transitions. [2023-11-26 11:53:27,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 324 flow [2023-11-26 11:53:27,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 299 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:27,724 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 110 flow [2023-11-26 11:53:27,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2023-11-26 11:53:27,725 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2023-11-26 11:53:27,726 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 110 flow [2023-11-26 11:53:27,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2023-11-26 11:53:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:27,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:53:27,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 11:53:27,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1531217336, now seen corresponding path program 1 times [2023-11-26 11:53:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434064054] [2023-11-26 11:53:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:27,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434064054] [2023-11-26 11:53:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434064054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:27,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:27,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391618944] [2023-11-26 11:53:27,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:27,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2023-11-26 11:53:27,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:27,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:27,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2023-11-26 11:53:27,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:27,848 INFO L124 PetriNetUnfolderBase]: 69/211 cut-off events. [2023-11-26 11:53:27,848 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-26 11:53:27,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 211 events. 69/211 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 772 event pairs, 67 based on Foata normal form. 4/211 useless extension candidates. Maximal degree in co-relation 267. Up to 164 conditions per place. [2023-11-26 11:53:27,849 INFO L140 encePairwiseOnDemand]: 43/45 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-26 11:53:27,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 33 transitions, 150 flow [2023-11-26 11:53:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-26 11:53:27,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-26 11:53:27,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-26 11:53:27,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-26 11:53:27,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:27,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-26 11:53:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:27,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-26 11:53:27,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-26 11:53:27,853 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 110 flow. Second operand 3 states and 75 transitions. [2023-11-26 11:53:27,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 33 transitions, 150 flow [2023-11-26 11:53:27,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 135 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:27,855 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-11-26 11:53:27,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-11-26 11:53:27,855 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-11-26 11:53:27,856 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-11-26 11:53:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-26 11:53:27,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-26 11:53:27,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-26 11:53:27,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-26 11:53:27,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-26 11:53:27,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-26 11:53:27,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-26 11:53:27,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-26 11:53:27,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-26 11:53:27,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-26 11:53:27,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-26 11:53:27,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-26 11:53:27,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-26 11:53:27,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-26 11:53:27,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-26 11:53:27,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-26 11:53:27,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-26 11:53:27,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-26 11:53:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:53:27,864 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:27,869 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:53:27,869 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:53:27,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:53:27 BasicIcfg [2023-11-26 11:53:27,875 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:53:27,875 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:53:27,875 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:53:27,876 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:53:27,876 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:24" (3/4) ... [2023-11-26 11:53:27,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:53:27,880 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 11:53:27,880 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 11:53:27,885 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2023-11-26 11:53:27,886 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 11:53:27,886 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:53:27,886 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:53:27,978 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:53:27,978 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:53:27,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:53:27,979 INFO L158 Benchmark]: Toolchain (without parser) took 5205.19ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 96.9MB in the beginning and 153.0MB in the end (delta: -56.1MB). Peak memory consumption was 99.0MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,980 INFO L158 Benchmark]: CDTParser took 1.47ms. Allocated memory is still 127.9MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:27,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 655.39ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 76.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.59ms. Allocated memory is still 127.9MB. Free memory was 76.7MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,981 INFO L158 Benchmark]: Boogie Preprocessor took 54.19ms. Allocated memory is still 127.9MB. Free memory was 74.6MB in the beginning and 72.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,981 INFO L158 Benchmark]: RCFGBuilder took 781.81ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 72.0MB in the beginning and 107.3MB in the end (delta: -35.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,982 INFO L158 Benchmark]: TraceAbstraction took 3529.36ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 106.7MB in the beginning and 61.8MB in the end (delta: 44.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,982 INFO L158 Benchmark]: Witness Printer took 103.44ms. Allocated memory is still 186.6MB. Free memory was 61.8MB in the beginning and 153.0MB in the end (delta: -91.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:53:27,984 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47ms. Allocated memory is still 127.9MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 655.39ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 76.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.59ms. Allocated memory is still 127.9MB. Free memory was 76.7MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.19ms. Allocated memory is still 127.9MB. Free memory was 74.6MB in the beginning and 72.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 781.81ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 72.0MB in the beginning and 107.3MB in the end (delta: -35.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3529.36ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 106.7MB in the beginning and 61.8MB in the end (delta: 44.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 103.44ms. Allocated memory is still 186.6MB. Free memory was 61.8MB in the beginning and 153.0MB in the end (delta: -91.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 698 IncrementalHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 12 mSDtfsCounter, 698 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=3, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:53:28,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8260ea55-6f31-4ef9-babd-9c30a3725bec/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE