./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/sanfoundry_27_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sanfoundry_27_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx --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 40b578d2ddf68a49bc52037a6e4860a392bad1b49fc77d85682d536447864a03 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:40,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:40,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:26:40,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:40,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:40,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:40,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:40,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:40,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:26:40,910 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:26:40,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:26:40,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:26:40,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:40,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:40,913 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:40,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:40,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:26:40,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:40,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:26:40,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:40,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:40,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:26:40,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:26:40,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:26:40,920 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:26:40,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:40,922 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:40,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:40,923 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:40,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:40,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:40,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:26:40,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:26:40,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:40,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:40,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:26:40,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:26:40,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:26:40,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:26:40,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:26:40,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:26:40,930 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:26:40,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:26:40,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:26:40,931 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_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40b578d2ddf68a49bc52037a6e4860a392bad1b49fc77d85682d536447864a03 [2023-11-21 22:26:41,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:41,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:41,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:41,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:41,329 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:41,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/array-examples/sanfoundry_27_ground.i [2023-11-21 22:26:44,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:44,723 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:44,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/sv-benchmarks/c/array-examples/sanfoundry_27_ground.i [2023-11-21 22:26:44,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/data/ebad8e555/e88be066fb8a4fd18e90fbb88999f36d/FLAG3ccbb1958 [2023-11-21 22:26:44,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/data/ebad8e555/e88be066fb8a4fd18e90fbb88999f36d [2023-11-21 22:26:44,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:44,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:44,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:44,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:44,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:44,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:44" (1/1) ... [2023-11-21 22:26:44,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79859c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:44, skipping insertion in model container [2023-11-21 22:26:44,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:44" (1/1) ... [2023-11-21 22:26:44,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:44,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:44,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:45,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:45,036 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:45,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45 WrapperNode [2023-11-21 22:26:45,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:45,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:45,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:45,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:45,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,095 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-11-21 22:26:45,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:45,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:45,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:45,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:45,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,130 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,142 INFO L187 HeapSplitter]: Split 7 memory accesses to 2 slices as follows [2, 5] [2023-11-21 22:26:45,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:45,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:45,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:45,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:45,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (1/1) ... [2023-11-21 22:26:45,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:45,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:45,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:26:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:26:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:26:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:26:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:26:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:26:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:26:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:26:45,374 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:45,377 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:26:45,625 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:26:45,721 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:26:45,721 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:26:45,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:45 BoogieIcfgContainer [2023-11-21 22:26:45,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:26:45,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:26:45,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:26:45,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:26:45,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:26:44" (1/3) ... [2023-11-21 22:26:45,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e30570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:45, skipping insertion in model container [2023-11-21 22:26:45,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:45" (2/3) ... [2023-11-21 22:26:45,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e30570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:45, skipping insertion in model container [2023-11-21 22:26:45,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:45" (3/3) ... [2023-11-21 22:26:45,734 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.i [2023-11-21 22:26:45,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:26:45,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:26:45,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:26:45,821 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;@3d9e8eaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:26:45,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:26:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.9) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-11-21 22:26:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:26:45,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:45,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:26:45,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:45,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash 111241, now seen corresponding path program 1 times [2023-11-21 22:26:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449069342] [2023-11-21 22:26:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:46,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449069342] [2023-11-21 22:26:46,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449069342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:46,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:46,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:26:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691507581] [2023-11-21 22:26:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:46,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:26:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:26:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:26:46,247 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.9) internal successors, (19), 16 states have internal predecessors, (19), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-21 22:26:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:46,336 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-21 22:26:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:26:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-21 22:26:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:46,352 INFO L225 Difference]: With dead ends: 33 [2023-11-21 22:26:46,352 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 22:26:46,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:46,360 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:46,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:26:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 22:26:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 22:26:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-11-21 22:26:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-21 22:26:46,397 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 3 [2023-11-21 22:26:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:46,398 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-21 22:26:46,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-21 22:26:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-21 22:26:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:26:46,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:46,399 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:26:46,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:26:46,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -980938850, now seen corresponding path program 1 times [2023-11-21 22:26:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633540163] [2023-11-21 22:26:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:46,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:46,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:46,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633540163] [2023-11-21 22:26:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633540163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405053630] [2023-11-21 22:26:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:46,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:46,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:46,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:46,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:26:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:26:46,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:46,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:26:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405053630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:46,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:26:46,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-21 22:26:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303952591] [2023-11-21 22:26:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:46,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:26:46,783 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 22:26:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:46,865 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-11-21 22:26:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2023-11-21 22:26:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:46,867 INFO L225 Difference]: With dead ends: 24 [2023-11-21 22:26:46,867 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 22:26:46,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:26:46,869 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:46,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 19 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:26:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 22:26:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2023-11-21 22:26:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-11-21 22:26:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-21 22:26:46,877 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2023-11-21 22:26:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:46,877 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-21 22:26:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 22:26:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-21 22:26:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:26:46,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:46,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 22:26:46,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:47,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:47,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:47,103 INFO L85 PathProgramCache]: Analyzing trace with hash -344333232, now seen corresponding path program 1 times [2023-11-21 22:26:47,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865897220] [2023-11-21 22:26:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:47,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:47,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:47,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865897220] [2023-11-21 22:26:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865897220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:47,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:47,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:26:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610963801] [2023-11-21 22:26:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:26:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:26:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:47,206 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-21 22:26:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:47,229 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-11-21 22:26:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:26:47,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-21 22:26:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:47,231 INFO L225 Difference]: With dead ends: 18 [2023-11-21 22:26:47,231 INFO L226 Difference]: Without dead ends: 17 [2023-11-21 22:26:47,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:47,233 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:47,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:26:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-21 22:26:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2023-11-21 22:26:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-11-21 22:26:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-21 22:26:47,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2023-11-21 22:26:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:47,240 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-21 22:26:47,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-21 22:26:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 22:26:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:26:47,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:47,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:26:47,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:47,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash -344327941, now seen corresponding path program 1 times [2023-11-21 22:26:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885874200] [2023-11-21 22:26:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:47,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885874200] [2023-11-21 22:26:47,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885874200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933387586] [2023-11-21 22:26:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:47,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:26:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:47,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:26:47,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:47,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933387586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:47,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-21 22:26:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152887180] [2023-11-21 22:26:47,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:26:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:26:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:26:47,566 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-21 22:26:47,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:47,689 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-11-21 22:26:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:26:47,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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 7 [2023-11-21 22:26:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:47,694 INFO L225 Difference]: With dead ends: 36 [2023-11-21 22:26:47,694 INFO L226 Difference]: Without dead ends: 26 [2023-11-21 22:26:47,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:26:47,699 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 39 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:26:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-21 22:26:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2023-11-21 22:26:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 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) [2023-11-21 22:26:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-21 22:26:47,715 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2023-11-21 22:26:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:47,716 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-21 22:26:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-21 22:26:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-21 22:26:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:26:47,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:47,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1] [2023-11-21 22:26:47,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:47,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:47,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash 137458907, now seen corresponding path program 2 times [2023-11-21 22:26:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448100071] [2023-11-21 22:26:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:47,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:26:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448100071] [2023-11-21 22:26:48,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448100071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:48,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:48,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:26:48,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285818995] [2023-11-21 22:26:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:48,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:26:48,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:26:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:26:48,110 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 22:26:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:48,163 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-11-21 22:26:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:26:48,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 13 [2023-11-21 22:26:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:48,167 INFO L225 Difference]: With dead ends: 26 [2023-11-21 22:26:48,167 INFO L226 Difference]: Without dead ends: 24 [2023-11-21 22:26:48,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:48,169 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:26:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-21 22:26:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-21 22:26:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-21 22:26:48,187 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2023-11-21 22:26:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:48,192 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-21 22:26:48,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 22:26:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-21 22:26:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:26:48,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:48,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-21 22:26:48,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:26:48,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:48,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1934535476, now seen corresponding path program 1 times [2023-11-21 22:26:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105810822] [2023-11-21 22:26:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:48,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105810822] [2023-11-21 22:26:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105810822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139324771] [2023-11-21 22:26:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:48,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:48,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:26:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:26:48,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:48,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139324771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:48,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:48,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-21 22:26:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281915336] [2023-11-21 22:26:48,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:26:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:26:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:26:48,803 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2023-11-21 22:26:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:48,993 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2023-11-21 22:26:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:26:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 16 [2023-11-21 22:26:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:48,997 INFO L225 Difference]: With dead ends: 49 [2023-11-21 22:26:48,997 INFO L226 Difference]: Without dead ends: 36 [2023-11-21 22:26:48,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:26:48,999 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:48,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 59 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:26:49,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-21 22:26:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-21 22:26:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-11-21 22:26:49,010 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2023-11-21 22:26:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:49,011 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-11-21 22:26:49,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2023-11-21 22:26:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-11-21 22:26:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 22:26:49,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:49,012 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1] [2023-11-21 22:26:49,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 22:26:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:26:49,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:49,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 834261876, now seen corresponding path program 2 times [2023-11-21 22:26:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:49,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245368147] [2023-11-21 22:26:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245368147] [2023-11-21 22:26:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245368147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174780243] [2023-11-21 22:26:49,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:26:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:49,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:49,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:26:49,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:26:49,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:26:49,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:26:49,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:49,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:50,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174780243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:50,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:50,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-21 22:26:50,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670577754] [2023-11-21 22:26:50,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:50,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:26:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:26:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 22:26:50,246 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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) [2023-11-21 22:26:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:50,596 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2023-11-21 22:26:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-21 22:26:50,597 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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 28 [2023-11-21 22:26:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:50,598 INFO L225 Difference]: With dead ends: 73 [2023-11-21 22:26:50,598 INFO L226 Difference]: Without dead ends: 60 [2023-11-21 22:26:50,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:26:50,600 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 83 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:50,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 54 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:26:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-21 22:26:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-21 22:26:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 59 states have internal predecessors, (62), 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) [2023-11-21 22:26:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-11-21 22:26:50,609 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 28 [2023-11-21 22:26:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:50,609 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-11-21 22:26:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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) [2023-11-21 22:26:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-11-21 22:26:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 22:26:50,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:50,611 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1] [2023-11-21 22:26:50,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-21 22:26:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 22:26:50,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:50,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1190200308, now seen corresponding path program 3 times [2023-11-21 22:26:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685889681] [2023-11-21 22:26:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:26:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685889681] [2023-11-21 22:26:51,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685889681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500079523] [2023-11-21 22:26:51,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:26:51,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:51,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:51,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:51,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:26:51,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 22:26:51,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:26:51,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:26:51,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-21 22:26:51,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:26:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500079523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:26:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [32] total 36 [2023-11-21 22:26:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144578438] [2023-11-21 22:26:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:26:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:26:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2023-11-21 22:26:51,934 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-21 22:26:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:51,979 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2023-11-21 22:26:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:26:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 52 [2023-11-21 22:26:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:51,986 INFO L225 Difference]: With dead ends: 60 [2023-11-21 22:26:51,986 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 22:26:51,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2023-11-21 22:26:51,989 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:51,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:26:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 22:26:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 22:26:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 58 states have internal predecessors, (61), 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) [2023-11-21 22:26:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-11-21 22:26:52,005 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 52 [2023-11-21 22:26:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:52,006 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-11-21 22:26:52,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-21 22:26:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-11-21 22:26:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 22:26:52,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:52,008 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 2, 1, 1, 1, 1] [2023-11-21 22:26:52,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-21 22:26:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:26:52,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:52,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1758496047, now seen corresponding path program 1 times [2023-11-21 22:26:52,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917600619] [2023-11-21 22:26:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:52,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-21 22:26:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917600619] [2023-11-21 22:26:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917600619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:26:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260506247] [2023-11-21 22:26:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:26:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:26:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:52,292 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-21 22:26:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:52,307 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2023-11-21 22:26:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:26:52,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 53 [2023-11-21 22:26:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:52,308 INFO L225 Difference]: With dead ends: 59 [2023-11-21 22:26:52,308 INFO L226 Difference]: Without dead ends: 58 [2023-11-21 22:26:52,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:52,309 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:52,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:26:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-21 22:26:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-11-21 22:26:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-11-21 22:26:52,324 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2023-11-21 22:26:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:52,325 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-11-21 22:26:52,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-21 22:26:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-11-21 22:26:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 22:26:52,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:52,329 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:26:52,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:52,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1758492109, now seen corresponding path program 1 times [2023-11-21 22:26:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745944934] [2023-11-21 22:26:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-21 22:26:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:52,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745944934] [2023-11-21 22:26:52,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745944934] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676634185] [2023-11-21 22:26:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:52,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:52,508 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:52,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:26:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-21 22:26:52,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:53,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:54,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676634185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:54,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:54,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 32, 32] total 66 [2023-11-21 22:26:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770670308] [2023-11-21 22:26:54,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:54,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-21 22:26:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:54,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-21 22:26:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2023-11-21 22:26:54,372 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 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) [2023-11-21 22:26:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:55,376 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2023-11-21 22:26:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-21 22:26:55,378 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 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 53 [2023-11-21 22:26:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:55,379 INFO L225 Difference]: With dead ends: 118 [2023-11-21 22:26:55,379 INFO L226 Difference]: Without dead ends: 109 [2023-11-21 22:26:55,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2597, Invalid=6715, Unknown=0, NotChecked=0, Total=9312 [2023-11-21 22:26:55,384 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 217 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:55,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 52 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:26:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-21 22:26:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2023-11-21 22:26:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 106 states have internal predecessors, (109), 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) [2023-11-21 22:26:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2023-11-21 22:26:55,407 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 53 [2023-11-21 22:26:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:55,407 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-11-21 22:26:55,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 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) [2023-11-21 22:26:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2023-11-21 22:26:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-21 22:26:55,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:55,412 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-21 22:26:55,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-21 22:26:55,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:55,629 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:55,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1142982284, now seen corresponding path program 2 times [2023-11-21 22:26:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208249696] [2023-11-21 22:26:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-11-21 22:26:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208249696] [2023-11-21 22:26:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208249696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:55,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:55,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:26:55,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335205266] [2023-11-21 22:26:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:55,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:26:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:26:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:26:55,866 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:26:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:55,894 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2023-11-21 22:26:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:26:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 104 [2023-11-21 22:26:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:26:55,896 INFO L225 Difference]: With dead ends: 112 [2023-11-21 22:26:55,896 INFO L226 Difference]: Without dead ends: 110 [2023-11-21 22:26:55,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:55,897 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:26:55,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:26:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-21 22:26:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-21 22:26:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.037037037037037) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-11-21 22:26:55,905 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 104 [2023-11-21 22:26:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:26:55,905 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-11-21 22:26:55,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:26:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-11-21 22:26:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-21 22:26:55,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:26:55,907 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:26:55,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:26:55,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash 84603101, now seen corresponding path program 1 times [2023-11-21 22:26:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551782932] [2023-11-21 22:26:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:26:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551782932] [2023-11-21 22:26:59,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551782932] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241168122] [2023-11-21 22:26:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:59,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:59,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:59,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:26:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-21 22:26:59,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:26:59,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241168122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:03,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2023-11-21 22:27:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335859552] [2023-11-21 22:27:03,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:03,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-21 22:27:03,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-21 22:27:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-11-21 22:27:03,404 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 130 states, 130 states have (on average 1.5538461538461539) internal successors, (202), 129 states have internal predecessors, (202), 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) [2023-11-21 22:27:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:06,605 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2023-11-21 22:27:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-21 22:27:06,606 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5538461538461539) internal successors, (202), 129 states have internal predecessors, (202), 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 107 [2023-11-21 22:27:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:06,607 INFO L225 Difference]: With dead ends: 221 [2023-11-21 22:27:06,608 INFO L226 Difference]: Without dead ends: 206 [2023-11-21 22:27:06,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2023-11-21 22:27:06,617 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 425 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:06,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 57 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:27:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-21 22:27:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-11-21 22:27:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 1.0196078431372548) internal successors, (208), 205 states have internal predecessors, (208), 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) [2023-11-21 22:27:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2023-11-21 22:27:06,640 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 107 [2023-11-21 22:27:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:06,641 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2023-11-21 22:27:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5538461538461539) internal successors, (202), 129 states have internal predecessors, (202), 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) [2023-11-21 22:27:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2023-11-21 22:27:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-21 22:27:06,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:06,651 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:06,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:06,852 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:27:06,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash -847581475, now seen corresponding path program 2 times [2023-11-21 22:27:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:06,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988286149] [2023-11-21 22:27:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:06,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:16,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988286149] [2023-11-21 22:27:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988286149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:27:16,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311394591] [2023-11-21 22:27:16,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:16,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:16,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8a6623-3bfb-4dad-bf4e-46681cd5c5d7/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:27:17,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:27:17,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:17,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-21 22:27:17,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:17,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311394591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:31,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 257 [2023-11-21 22:27:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837378235] [2023-11-21 22:27:31,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2023-11-21 22:27:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2023-11-21 22:27:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2023-11-21 22:27:31,537 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand has 258 states, 258 states have (on average 1.5271317829457365) internal successors, (394), 257 states have internal predecessors, (394), 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)