./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/memsafety-ext2/length_test03-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/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_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/memsafety-ext2/length_test03-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/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_e1ed629d-20db-44b2-8b19-be999f48b2a3/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 8d477dcc38abb71f88978d460e8393ef9ba09f24c134f3de362c4df2a3599c9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:11:22,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:11:22,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 07:11:22,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:11:22,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:11:22,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:11:22,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:11:22,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:11:22,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:11:22,322 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:11:22,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:11:22,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:11:22,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:11:22,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:11:22,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:11:22,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:11:22,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:11:22,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:11:22,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:11:22,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:11:22,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:11:22,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:11:22,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:11:22,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:11:22,330 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 07:11:22,331 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:11:22,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:11:22,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:11:22,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:11:22,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:11:22,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:11:22,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:11:22,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:11:22,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:11:22,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:11:22,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:11:22,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:11:22,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:11:22,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:11:22,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:11:22,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:11:22,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:11:22,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:11:22,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:11:22,337 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_e1ed629d-20db-44b2-8b19-be999f48b2a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d477dcc38abb71f88978d460e8393ef9ba09f24c134f3de362c4df2a3599c9a [2023-11-29 07:11:22,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:11:22,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:11:22,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:11:22,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:11:22,596 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:11:22,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-ext2/length_test03-2.i [2023-11-29 07:11:25,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:11:25,517 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:11:25,517 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/sv-benchmarks/c/memsafety-ext2/length_test03-2.i [2023-11-29 07:11:25,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/data/8f03aa656/ae9ce2e8865f406b92dc29fcf20b9605/FLAGfabe51236 [2023-11-29 07:11:25,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/data/8f03aa656/ae9ce2e8865f406b92dc29fcf20b9605 [2023-11-29 07:11:25,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:11:25,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:11:25,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:11:25,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:11:25,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:11:25,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b12bb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25, skipping insertion in model container [2023-11-29 07:11:25,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:11:25,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:11:25,860 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:11:25,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:11:25,928 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:11:25,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25 WrapperNode [2023-11-29 07:11:25,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:11:25,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:11:25,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:11:25,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:11:25,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,973 INFO L138 Inliner]: procedures = 123, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 93 [2023-11-29 07:11:25,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:11:25,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:11:25,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:11:25,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:11:25,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:25,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,012 INFO L175 MemorySlicer]: Split 25 memory accesses to 3 slices as follows [2, 10, 13]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 6, 7]. [2023-11-29 07:11:26,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:11:26,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:11:26,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:11:26,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:11:26,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (1/1) ... [2023-11-29 07:11:26,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:11:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:26,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:26,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:11:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 07:11:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:11:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:11:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:11:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:11:26,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:11:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure append [2023-11-29 07:11:26,110 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2023-11-29 07:11:26,209 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:11:26,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:11:26,444 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:11:26,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:11:26,472 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 07:11:26,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:26 BoogieIcfgContainer [2023-11-29 07:11:26,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:11:26,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:11:26,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:11:26,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:11:26,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:11:25" (1/3) ... [2023-11-29 07:11:26,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e04792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:11:26, skipping insertion in model container [2023-11-29 07:11:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:25" (2/3) ... [2023-11-29 07:11:26,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e04792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:11:26, skipping insertion in model container [2023-11-29 07:11:26,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:26" (3/3) ... [2023-11-29 07:11:26,481 INFO L112 eAbstractionObserver]: Analyzing ICFG length_test03-2.i [2023-11-29 07:11:26,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:11:26,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 07:11:26,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:11:26,544 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;@26bebff9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:11:26,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 07:11:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:11:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 07:11:26,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:26,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:26,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:26,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash 654302400, now seen corresponding path program 1 times [2023-11-29 07:11:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276847455] [2023-11-29 07:11:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:26,759 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 07:11:26,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276847455] [2023-11-29 07:11:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276847455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:11:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308745344] [2023-11-29 07:11:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:26,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:11:26,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:11:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:11:26,791 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 07:11:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:26,820 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2023-11-29 07:11:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:11:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-11-29 07:11:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:26,827 INFO L225 Difference]: With dead ends: 51 [2023-11-29 07:11:26,827 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 07:11:26,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:11:26,833 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:26,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:11:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 07:11:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-29 07:11:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:11:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-11-29 07:11:26,863 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2023-11-29 07:11:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:26,863 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-11-29 07:11:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 07:11:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-11-29 07:11:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 07:11:26,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:26,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:26,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:11:26,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:26,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2109412371, now seen corresponding path program 1 times [2023-11-29 07:11:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:26,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58626920] [2023-11-29 07:11:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,086 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 07:11:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58626920] [2023-11-29 07:11:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58626920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:27,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:11:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042926476] [2023-11-29 07:11:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:27,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:11:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:11:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:11:27,091 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 07:11:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:27,173 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-11-29 07:11:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:11:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-29 07:11:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:27,175 INFO L225 Difference]: With dead ends: 46 [2023-11-29 07:11:27,176 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 07:11:27,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:11:27,178 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:27,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 07:11:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2023-11-29 07:11:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.45) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:11:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-29 07:11:27,187 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2023-11-29 07:11:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:27,187 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-29 07:11:27,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 07:11:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-29 07:11:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 07:11:27,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:27,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:27,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:11:27,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:27,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1872407553, now seen corresponding path program 1 times [2023-11-29 07:11:27,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:27,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504552055] [2023-11-29 07:11:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:11:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504552055] [2023-11-29 07:11:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504552055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:27,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:11:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415117030] [2023-11-29 07:11:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:11:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:11:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:11:27,431 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:11:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:27,558 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2023-11-29 07:11:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:11:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-29 07:11:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:27,560 INFO L225 Difference]: With dead ends: 38 [2023-11-29 07:11:27,560 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 07:11:27,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:11:27,562 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:27,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 83 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 07:11:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2023-11-29 07:11:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 07:11:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 07:11:27,569 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2023-11-29 07:11:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:27,569 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 07:11:27,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:11:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 07:11:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 07:11:27,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:27,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:27,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:11:27,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:27,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 975040246, now seen corresponding path program 1 times [2023-11-29 07:11:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:27,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403759519] [2023-11-29 07:11:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:27,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:11:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403759519] [2023-11-29 07:11:27,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403759519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517901178] [2023-11-29 07:11:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:27,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:27,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:27,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:11:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:27,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:11:27,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:11:28,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:11:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:11:28,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517901178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:11:28,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:11:28,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 07:11:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425695603] [2023-11-29 07:11:28,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:11:28,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:11:28,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:11:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:11:28,113 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:11:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:28,295 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-11-29 07:11:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:11:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2023-11-29 07:11:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:28,297 INFO L225 Difference]: With dead ends: 52 [2023-11-29 07:11:28,297 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 07:11:28,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:11:28,299 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:28,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 133 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 07:11:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-11-29 07:11:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:11:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-11-29 07:11:28,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 27 [2023-11-29 07:11:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:28,307 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-11-29 07:11:28,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:11:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-29 07:11:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 07:11:28,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:28,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:28,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:11:28,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:28,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:28,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:28,511 INFO L85 PathProgramCache]: Analyzing trace with hash 525174870, now seen corresponding path program 1 times [2023-11-29 07:11:28,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:28,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145701133] [2023-11-29 07:11:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:28,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:11:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145701133] [2023-11-29 07:11:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145701133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745173045] [2023-11-29 07:11:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:29,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:29,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:11:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:29,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:11:29,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:11:29,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745173045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:29,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:11:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 07:11:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203535003] [2023-11-29 07:11:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:29,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:11:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:11:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:11:29,512 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 07:11:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:29,604 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-11-29 07:11:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:11:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2023-11-29 07:11:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:29,612 INFO L225 Difference]: With dead ends: 42 [2023-11-29 07:11:29,612 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 07:11:29,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:11:29,613 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:29,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 67 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 07:11:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2023-11-29 07:11:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:11:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-29 07:11:29,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 30 [2023-11-29 07:11:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:29,621 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-29 07:11:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 07:11:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-29 07:11:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 07:11:29,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:29,622 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:29,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:11:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:29,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:29,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 225575411, now seen corresponding path program 1 times [2023-11-29 07:11:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:29,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049408895] [2023-11-29 07:11:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:11:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:11:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049408895] [2023-11-29 07:11:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049408895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904904176] [2023-11-29 07:11:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:30,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:30,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:30,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:11:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:30,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:11:30,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:11:30,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:11:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:11:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904904176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:11:30,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:11:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-11-29 07:11:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048811576] [2023-11-29 07:11:30,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:11:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 07:11:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 07:11:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:11:31,002 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 07:11:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:31,745 INFO L93 Difference]: Finished difference Result 116 states and 155 transitions. [2023-11-29 07:11:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 07:11:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 41 [2023-11-29 07:11:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:31,748 INFO L225 Difference]: With dead ends: 116 [2023-11-29 07:11:31,748 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 07:11:31,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 07:11:31,751 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 160 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:31,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 137 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:11:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 07:11:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 56. [2023-11-29 07:11:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-29 07:11:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-11-29 07:11:31,764 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 41 [2023-11-29 07:11:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:31,764 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-11-29 07:11:31,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 07:11:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-11-29 07:11:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 07:11:31,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:31,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:31,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:11:31,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:31,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:31,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash 773078730, now seen corresponding path program 1 times [2023-11-29 07:11:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394135470] [2023-11-29 07:11:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:11:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 07:11:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394135470] [2023-11-29 07:11:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394135470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:32,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:32,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:11:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023174131] [2023-11-29 07:11:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:11:32,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:11:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:11:32,179 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:32,270 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-11-29 07:11:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:11:32,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-29 07:11:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:32,273 INFO L225 Difference]: With dead ends: 61 [2023-11-29 07:11:32,273 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 07:11:32,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:11:32,274 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 07:11:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 07:11:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 states have internal predecessors, (56), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-29 07:11:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2023-11-29 07:11:32,285 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 47 [2023-11-29 07:11:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:32,285 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2023-11-29 07:11:32,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2023-11-29 07:11:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:11:32,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:32,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:32,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:11:32,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:32,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1173899479, now seen corresponding path program 1 times [2023-11-29 07:11:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:32,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966286778] [2023-11-29 07:11:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:32,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:11:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:11:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966286778] [2023-11-29 07:11:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966286778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261246844] [2023-11-29 07:11:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:32,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:32,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:32,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:11:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:32,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:11:32,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:11:32,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:11:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:11:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261246844] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:11:33,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:11:33,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2023-11-29 07:11:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847359621] [2023-11-29 07:11:33,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:11:33,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 07:11:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 07:11:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:11:33,011 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 07:11:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:33,245 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2023-11-29 07:11:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:11:33,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 50 [2023-11-29 07:11:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:33,247 INFO L225 Difference]: With dead ends: 100 [2023-11-29 07:11:33,247 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 07:11:33,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:11:33,249 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:33,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 140 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:11:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 07:11:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-29 07:11:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 73 states have internal predecessors, (80), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-29 07:11:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2023-11-29 07:11:33,276 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 50 [2023-11-29 07:11:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:33,277 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2023-11-29 07:11:33,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 07:11:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2023-11-29 07:11:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 07:11:33,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:33,280 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:33,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:11:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 07:11:33,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:33,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash -794905063, now seen corresponding path program 2 times [2023-11-29 07:11:33,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:33,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104029948] [2023-11-29 07:11:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:33,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:11:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 07:11:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:11:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:11:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 07:11:33,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:33,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104029948] [2023-11-29 07:11:33,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104029948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:33,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338372227] [2023-11-29 07:11:33,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:11:33,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:33,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:33,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:33,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:11:34,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:11:34,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:11:34,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:11:34,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 07:11:34,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338372227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:34,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:11:34,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-29 07:11:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254368465] [2023-11-29 07:11:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:34,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:11:34,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:11:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:11:34,505 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:34,558 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2023-11-29 07:11:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:11:34,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-11-29 07:11:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:34,560 INFO L225 Difference]: With dead ends: 89 [2023-11-29 07:11:34,560 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 07:11:34,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:11:34,561 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:34,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 77 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:11:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 07:11:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-29 07:11:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 72 states have internal predecessors, (79), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-29 07:11:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2023-11-29 07:11:34,576 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 80 [2023-11-29 07:11:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:34,576 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2023-11-29 07:11:34,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2023-11-29 07:11:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 07:11:34,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:34,579 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:34,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:11:34,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 07:11:34,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 07:11:34,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1127746918, now seen corresponding path program 1 times [2023-11-29 07:11:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:34,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241143532] [2023-11-29 07:11:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:34,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:11:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:11:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:11:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 07:11:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:11:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:11:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-29 07:11:35,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241143532] [2023-11-29 07:11:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241143532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:35,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:35,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:11:35,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593199111] [2023-11-29 07:11:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:11:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:11:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:11:35,063 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:35,129 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2023-11-29 07:11:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:11:35,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-29 07:11:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:35,130 INFO L225 Difference]: With dead ends: 88 [2023-11-29 07:11:35,130 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 07:11:35,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:11:35,132 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:35,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 07:11:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 07:11:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 07:11:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 07:11:35,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2023-11-29 07:11:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:35,134 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:11:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 07:11:35,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 07:11:35,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-29 07:11:35,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-29 07:11:35,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-29 07:11:35,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-29 07:11:35,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:11:35,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 07:11:35,334 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 591) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 578) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point L573-2(lines 573 576) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L902 garLoopResultBuilder]: At program point L573-4(lines 573 576) the Hoare annotation is: true [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point L573-5(lines 573 576) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 578) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point L578-2(line 578) no Hoare annotation was computed. [2023-11-29 07:11:35,335 INFO L899 garLoopResultBuilder]: For program point L578-3(line 578) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L895 garLoopResultBuilder]: At program point L578-4(lines 578 581) the Hoare annotation is: (or (= |ULTIMATE.start_main_~c~0#1| 0) (and (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483645))) [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point L578-5(lines 578 581) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point L591-3(line 591) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point L591-4(line 591) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L895 garLoopResultBuilder]: At program point L591-5(lines 591 595) the Hoare annotation is: (< 0 (+ 2147483649 |ULTIMATE.start_main_~c~0#1|)) [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point L591-6(lines 591 595) no Hoare annotation was computed. [2023-11-29 07:11:35,336 INFO L902 garLoopResultBuilder]: At program point L575(line 575) the Hoare annotation is: true [2023-11-29 07:11:35,336 INFO L899 garLoopResultBuilder]: For program point L575-1(line 575) no Hoare annotation was computed. [2023-11-29 07:11:35,337 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 591) no Hoare annotation was computed. [2023-11-29 07:11:35,337 INFO L895 garLoopResultBuilder]: At program point L584-2(lines 584 588) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483645)) [2023-11-29 07:11:35,337 INFO L899 garLoopResultBuilder]: For program point L584-3(lines 584 588) no Hoare annotation was computed. [2023-11-29 07:11:35,337 INFO L895 garLoopResultBuilder]: At program point L580(line 580) the Hoare annotation is: (or (= |ULTIMATE.start_main_~c~0#1| 0) (and (<= |ULTIMATE.start_main_~c~0#1| 5) (<= 1 |ULTIMATE.start_main_~c~0#1|))) [2023-11-29 07:11:35,337 INFO L899 garLoopResultBuilder]: For program point L580-1(lines 578 581) no Hoare annotation was computed. [2023-11-29 07:11:35,337 INFO L899 garLoopResultBuilder]: For program point appendEXIT(lines 550 564) no Hoare annotation was computed. [2023-11-29 07:11:35,337 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 550 564) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_$Pointer$#2.base)| |#memory_$Pointer$#2.base|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_$Pointer$#2.offset| |old(#memory_$Pointer$#2.offset)|) (= |old(#memory_$Pointer$#1.base)| |#memory_$Pointer$#1.base|) (= |#memory_int#1| |old(#memory_int#1)|) (= |old(#memory_$Pointer$#1.offset)| |#memory_$Pointer$#1.offset|) (= |old(#valid)| |#valid|)) [2023-11-29 07:11:35,337 INFO L899 garLoopResultBuilder]: For program point L553(line 553) no Hoare annotation was computed. [2023-11-29 07:11:35,338 INFO L899 garLoopResultBuilder]: For program point L553-2(lines 553 559) no Hoare annotation was computed. [2023-11-29 07:11:35,338 INFO L899 garLoopResultBuilder]: For program point appendFINAL(lines 550 564) no Hoare annotation was computed. [2023-11-29 07:11:35,341 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:35,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 07:11:35,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:11:35 BoogieIcfgContainer [2023-11-29 07:11:35,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 07:11:35,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:11:35,354 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:11:35,354 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:11:35,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:26" (3/4) ... [2023-11-29 07:11:35,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 07:11:35,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure append [2023-11-29 07:11:35,364 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-29 07:11:35,364 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 07:11:35,365 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 07:11:35,365 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 07:11:35,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 07:11:35,463 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 07:11:35,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:11:35,463 INFO L158 Benchmark]: Toolchain (without parser) took 9917.49ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 97.6MB in the beginning and 108.4MB in the end (delta: -10.9MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,464 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 81.3MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:35,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.77ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 80.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.94ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,465 INFO L158 Benchmark]: Boogie Preprocessor took 59.05ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 75.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,465 INFO L158 Benchmark]: RCFGBuilder took 439.02ms. Allocated memory is still 142.6MB. Free memory was 75.4MB in the beginning and 110.5MB in the end (delta: -35.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,466 INFO L158 Benchmark]: TraceAbstraction took 8878.77ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 109.6MB in the beginning and 113.7MB in the end (delta: -4.0MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,466 INFO L158 Benchmark]: Witness Printer took 108.86ms. Allocated memory is still 207.6MB. Free memory was 113.7MB in the beginning and 108.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 07:11:35,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 81.3MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.77ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 80.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.94ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.05ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 75.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.02ms. Allocated memory is still 142.6MB. Free memory was 75.4MB in the beginning and 110.5MB in the end (delta: -35.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8878.77ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 109.6MB in the beginning and 113.7MB in the end (delta: -4.0MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. * Witness Printer took 108.86ms. Allocated memory is still 207.6MB. Free memory was 113.7MB in the beginning and 108.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 578]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 578]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 591]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 591]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 288 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 282 mSDsluCounter, 865 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 637 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 611 IncrementalHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 228 mSDtfsCounter, 611 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 492 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=8, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 64 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 20 PreInvPairs, 47 NumberOfFragments, 61 HoareAnnotationTreeSize, 20 FomulaSimplifications, 299 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 348 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 2028 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2804 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 854/959 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 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 584]: Loop Invariant Derived loop invariant: ((1 <= c) && (c <= 2147483645)) - InvariantResult [Line: 578]: Loop Invariant Derived loop invariant: ((c == 0) || ((1 <= c) && (c <= 2147483645))) - InvariantResult [Line: 591]: Loop Invariant Derived loop invariant: (0 < (2147483649 + c)) RESULT: Ultimate proved your program to be correct! [2023-11-29 07:11:35,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ed629d-20db-44b2-8b19-be999f48b2a3/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