./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_power.opt-thin000_power.opt.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_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_power.opt-thin000_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya --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 eec124b30114ac40ce6b503b76c1b377fc7c0cddd0ece3b04d579d49ce56e9b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:23:08,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:23:09,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:23:09,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:23:09,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:23:09,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:23:09,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:23:09,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:23:09,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:23:09,061 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:23:09,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:23:09,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:23:09,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:23:09,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:23:09,064 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:23:09,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:23:09,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:23:09,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:23:09,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:23:09,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:23:09,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:23:09,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:23:09,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:23:09,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:23:09,069 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:23:09,069 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:23:09,070 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:23:09,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:23:09,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:23:09,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:23:09,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:23:09,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:23:09,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:23:09,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:23:09,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:23:09,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:23:09,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:23:09,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:23:09,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:23:09,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:23:09,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:23:09,074 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:23:09,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:23:09,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:23:09,075 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_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eec124b30114ac40ce6b503b76c1b377fc7c0cddd0ece3b04d579d49ce56e9b5 [2023-11-29 06:23:09,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:23:09,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:23:09,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:23:09,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:23:09,334 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:23:09,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2023-11-29 06:23:12,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:23:12,359 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:23:12,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/sv-benchmarks/c/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2023-11-29 06:23:12,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/data/656f105d0/98d4ad568a3143c895391cc19138ed85/FLAG4410cc646 [2023-11-29 06:23:12,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/data/656f105d0/98d4ad568a3143c895391cc19138ed85 [2023-11-29 06:23:12,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:23:12,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:23:12,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:12,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:23:12,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:23:12,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acd6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12, skipping insertion in model container [2023-11-29 06:23:12,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:23:12,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:12,812 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:23:12,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:12,899 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:23:12,900 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:23:12,908 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:23:12,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12 WrapperNode [2023-11-29 06:23:12,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:12,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:12,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:23:12,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:23:12,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,962 INFO L138 Inliner]: procedures = 175, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-29 06:23:12,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:12,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:23:12,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:23:12,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:23:12,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:12,999 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 1, 16, 1]. 80 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1, 0]. The 7 writes are split as follows [0, 1, 5, 1]. [2023-11-29 06:23:12,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:23:13,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:23:13,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:23:13,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:23:13,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (1/1) ... [2023-11-29 06:23:13,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:23:13,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:13,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:23:13,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:23:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:23:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:23:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:23:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:23:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:23:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:23:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:23:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:23:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:23:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:23:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:23:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:23:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 06:23:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 06:23:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 06:23:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 06:23:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:23:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:23:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:23:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:23:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:23:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:23:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:23:13,102 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:23:13,266 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:23:13,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:23:13,681 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:23:13,978 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:23:13,978 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:23:13,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:13 BoogieIcfgContainer [2023-11-29 06:23:13,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:23:13,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:23:13,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:23:13,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:23:13,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:12" (1/3) ... [2023-11-29 06:23:13,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b3770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:13, skipping insertion in model container [2023-11-29 06:23:13,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:12" (2/3) ... [2023-11-29 06:23:13,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b3770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:13, skipping insertion in model container [2023-11-29 06:23:13,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:13" (3/3) ... [2023-11-29 06:23:13,989 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_power.opt-thin000_power.opt.i [2023-11-29 06:23:13,997 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:23:14,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:23:14,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 06:23:14,008 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:23:14,066 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:23:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 28 transitions, 64 flow [2023-11-29 06:23:14,129 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-11-29 06:23:14,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:23:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-29 06:23:14,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 28 transitions, 64 flow [2023-11-29 06:23:14,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2023-11-29 06:23:14,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:23:14,153 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;@5c8c6512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:23:14,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-29 06:23:14,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:23:14,161 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 06:23:14,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:23:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:23:14,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:14,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 06:23:14,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 42874285, now seen corresponding path program 1 times [2023-11-29 06:23:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303941278] [2023-11-29 06:23:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:23:14,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:14,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303941278] [2023-11-29 06:23:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303941278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:14,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:14,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:23:14,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532904185] [2023-11-29 06:23:14,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:23:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:23:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:23:14,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2023-11-29 06:23:14,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 06:23:14,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:23:14,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2023-11-29 06:23:14,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:23:14,739 INFO L124 PetriNetUnfolderBase]: 288/509 cut-off events. [2023-11-29 06:23:14,739 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:23:14,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 509 events. 288/509 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2367 event pairs, 104 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 1012. Up to 369 conditions per place. [2023-11-29 06:23:14,746 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 29 selfloop transitions, 3 changer transitions 2/39 dead transitions. [2023-11-29 06:23:14,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 155 flow [2023-11-29 06:23:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:23:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:23:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2023-11-29 06:23:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2023-11-29 06:23:14,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 59 transitions. [2023-11-29 06:23:14,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 59 transitions. [2023-11-29 06:23:14,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:23:14,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 59 transitions. [2023-11-29 06:23:14,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-29 06:23:14,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 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) [2023-11-29 06:23:14,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 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) [2023-11-29 06:23:14,782 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 3 states and 59 transitions. [2023-11-29 06:23:14,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 155 flow [2023-11-29 06:23:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:23:14,787 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2023-11-29 06:23:14,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-29 06:23:14,793 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-29 06:23:14,793 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 73 flow [2023-11-29 06:23:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 06:23:14,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:23:14,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:14,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:23:14,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 06:23:14,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash 236956108, now seen corresponding path program 1 times [2023-11-29 06:23:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:14,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354193618] [2023-11-29 06:23:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:23:14,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:14,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354193618] [2023-11-29 06:23:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354193618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:14,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:14,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064819347] [2023-11-29 06:23:14,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:14,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:14,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:14,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2023-11-29 06:23:14,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 06:23:14,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:23:14,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2023-11-29 06:23:14,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:23:15,166 INFO L124 PetriNetUnfolderBase]: 212/385 cut-off events. [2023-11-29 06:23:15,166 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 06:23:15,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 385 events. 212/385 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1782 event pairs, 80 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 864. Up to 244 conditions per place. [2023-11-29 06:23:15,171 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 27 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-29 06:23:15,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 149 flow [2023-11-29 06:23:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:23:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2023-11-29 06:23:15,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-29 06:23:15,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 60 transitions. [2023-11-29 06:23:15,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 60 transitions. [2023-11-29 06:23:15,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:23:15,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 60 transitions. [2023-11-29 06:23:15,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2023-11-29 06:23:15,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-11-29 06:23:15,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-11-29 06:23:15,176 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2023-11-29 06:23:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 149 flow [2023-11-29 06:23:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:23:15,179 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 68 flow [2023-11-29 06:23:15,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-29 06:23:15,180 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-29 06:23:15,180 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 68 flow [2023-11-29 06:23:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 06:23:15,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:23:15,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:15,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:23:15,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 06:23:15,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash 236956109, now seen corresponding path program 1 times [2023-11-29 06:23:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73989166] [2023-11-29 06:23:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:23:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73989166] [2023-11-29 06:23:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73989166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370504588] [2023-11-29 06:23:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:15,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:15,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2023-11-29 06:23:15,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 06:23:15,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:23:15,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2023-11-29 06:23:15,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:23:15,481 INFO L124 PetriNetUnfolderBase]: 180/329 cut-off events. [2023-11-29 06:23:15,481 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-29 06:23:15,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 329 events. 180/329 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1530 event pairs, 68 based on Foata normal form. 24/346 useless extension candidates. Maximal degree in co-relation 728. Up to 188 conditions per place. [2023-11-29 06:23:15,483 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-29 06:23:15,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 140 flow [2023-11-29 06:23:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:23:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2023-11-29 06:23:15,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2023-11-29 06:23:15,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 58 transitions. [2023-11-29 06:23:15,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 58 transitions. [2023-11-29 06:23:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:23:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 58 transitions. [2023-11-29 06:23:15,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-29 06:23:15,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-11-29 06:23:15,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-11-29 06:23:15,487 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 68 flow. Second operand 4 states and 58 transitions. [2023-11-29 06:23:15,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 140 flow [2023-11-29 06:23:15,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:23:15,489 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-11-29 06:23:15,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-11-29 06:23:15,490 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-11-29 06:23:15,491 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-11-29 06:23:15,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-29 06:23:15,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-11-29 06:23:15,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-29 06:23:15,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-29 06:23:15,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-29 06:23:15,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-11-29 06:23:15,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-11-29 06:23:15,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-29 06:23:15,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-29 06:23:15,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-29 06:23:15,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-29 06:23:15,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:23:15,497 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 06:23:15,502 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 06:23:15,502 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:23:15,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:23:15 BasicIcfg [2023-11-29 06:23:15,508 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:23:15,509 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:23:15,509 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:23:15,509 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:23:15,510 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:13" (3/4) ... [2023-11-29 06:23:15,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:23:15,514 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 06:23:15,514 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 06:23:15,519 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 62 nodes and edges [2023-11-29 06:23:15,520 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-29 06:23:15,520 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:23:15,520 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 06:23:15,607 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:23:15,608 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:23:15,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:23:15,609 INFO L158 Benchmark]: Toolchain (without parser) took 3213.93ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 111.9MB in the beginning and 65.2MB in the end (delta: 46.7MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,609 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:23:15,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.87ms. Allocated memory is still 153.1MB. Free memory was 111.4MB in the beginning and 87.4MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.27ms. Allocated memory is still 153.1MB. Free memory was 87.4MB in the beginning and 85.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,610 INFO L158 Benchmark]: Boogie Preprocessor took 59.16ms. Allocated memory is still 153.1MB. Free memory was 85.1MB in the beginning and 81.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,611 INFO L158 Benchmark]: RCFGBuilder took 955.12ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 80.9MB in the beginning and 89.2MB in the end (delta: -8.3MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,611 INFO L158 Benchmark]: TraceAbstraction took 1526.72ms. Allocated memory is still 184.5MB. Free memory was 88.2MB in the beginning and 70.5MB in the end (delta: 17.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,612 INFO L158 Benchmark]: Witness Printer took 98.95ms. Allocated memory is still 184.5MB. Free memory was 70.5MB in the beginning and 65.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:23:15,614 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.87ms. Allocated memory is still 153.1MB. Free memory was 111.4MB in the beginning and 87.4MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.27ms. Allocated memory is still 153.1MB. Free memory was 87.4MB in the beginning and 85.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.16ms. Allocated memory is still 153.1MB. Free memory was 85.1MB in the beginning and 81.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 955.12ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 80.9MB in the beginning and 89.2MB in the end (delta: -8.3MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1526.72ms. Allocated memory is still 184.5MB. Free memory was 88.2MB in the beginning and 70.5MB in the end (delta: 17.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 98.95ms. Allocated memory is still 184.5MB. Free memory was 70.5MB in the beginning and 65.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 774]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 774]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 810]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 810]: 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, 49 locations, 10 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 06:23:15,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7057fc21-5c83-4f42-b28a-dc30edb0fa54/bin/uautomizer-verify-BQ2R08f2Ya/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