./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34ebd55fb329f5d1f91a7448416ebb87d44ad143bdc373b65c05d35b2199abdd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:41:50,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:41:50,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:41:50,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:41:50,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:41:50,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:41:50,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:41:50,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:41:50,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:41:50,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:41:50,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:41:50,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:41:50,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:41:50,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:41:50,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:41:50,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:41:50,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:41:50,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:41:50,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:41:50,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:41:50,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:41:50,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:41:50,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:41:50,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:41:50,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:41:50,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:41:50,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:41:50,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:41:50,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:41:50,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:41:50,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:41:50,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:41:50,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:41:50,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:41:50,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:41:50,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:41:50,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:41:50,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:41:50,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:41:50,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:41:50,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:41:50,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:41:50,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:41:50,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:41:50,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:41:50,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:41:50,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:41:50,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:41:50,363 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:41:50,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:41:50,364 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:41:50,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:41:50,365 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:41:50,366 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:41:50,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:41:50,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:41:50,367 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:41:50,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:41:50,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:41:50,368 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:41:50,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:41:50,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:41:50,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:41:50,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:41:50,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:41:50,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:41:50,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:41:50,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:41:50,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:41:50,372 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:41:50,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:41:50,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:41:50,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:41:50,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:41:50,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:41:50,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:41:50,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:41:50,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:41:50,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:41:50,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:41:50,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:41:50,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:41:50,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:41:50,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:41:50,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:41:50,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ebd55fb329f5d1f91a7448416ebb87d44ad143bdc373b65c05d35b2199abdd [2022-11-23 15:41:50,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:41:50,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:41:50,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:41:50,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:41:50,699 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:41:50,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2022-11-23 15:41:53,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:41:54,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:41:54,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2022-11-23 15:41:54,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/data/9de1ef650/f789f9531b5045ee8e6cf7315a3b87ef/FLAG9560220e3 [2022-11-23 15:41:54,183 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/data/9de1ef650/f789f9531b5045ee8e6cf7315a3b87ef [2022-11-23 15:41:54,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:41:54,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:41:54,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:41:54,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:41:54,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:41:54,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab87c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54, skipping insertion in model container [2022-11-23 15:41:54,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:41:54,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:41:54,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:41:54,651 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:41:54,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:41:54,735 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:41:54,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54 WrapperNode [2022-11-23 15:41:54,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:41:54,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:41:54,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:41:54,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:41:54,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,814 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2022-11-23 15:41:54,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:41:54,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:41:54,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:41:54,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:41:54,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,846 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:41:54,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:41:54,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:41:54,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:41:54,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (1/1) ... [2022-11-23 15:41:54,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:41:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:54,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:41:54,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:41:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:41:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:41:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:41:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:41:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:41:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:41:55,116 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:41:55,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:41:55,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:41:55,438 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:41:55,438 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 15:41:55,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:55 BoogieIcfgContainer [2022-11-23 15:41:55,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:41:55,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:41:55,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:41:55,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:41:55,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:54" (1/3) ... [2022-11-23 15:41:55,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae83683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:55, skipping insertion in model container [2022-11-23 15:41:55,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:54" (2/3) ... [2022-11-23 15:41:55,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae83683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:55, skipping insertion in model container [2022-11-23 15:41:55,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:55" (3/3) ... [2022-11-23 15:41:55,452 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-1.i [2022-11-23 15:41:55,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:41:55,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-23 15:41:55,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:41:55,572 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6b9624d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:41:55,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-23 15:41:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 37 states have internal predecessors, (44), 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) [2022-11-23 15:41:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 15:41:55,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:55,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 15:41:55,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 4204, now seen corresponding path program 1 times [2022-11-23 15:41:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791072294] [2022-11-23 15:41:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:55,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:55,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791072294] [2022-11-23 15:41:55,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791072294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:55,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:55,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:41:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593465690] [2022-11-23 15:41:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,010 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 37 states have internal predecessors, (44), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 15:41:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:56,077 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-11-23 15:41:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-23 15:41:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:56,091 INFO L225 Difference]: With dead ends: 63 [2022-11-23 15:41:56,091 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:41:56,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,099 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:56,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:41:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 15:41:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 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) [2022-11-23 15:41:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-23 15:41:56,140 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 2 [2022-11-23 15:41:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:56,142 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-23 15:41:56,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 15:41:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-23 15:41:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:41:56,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:56,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:41:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:41:56,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 130376, now seen corresponding path program 1 times [2022-11-23 15:41:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257323065] [2022-11-23 15:41:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:56,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:56,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257323065] [2022-11-23 15:41:56,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257323065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:56,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:56,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:41:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693039759] [2022-11-23 15:41:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,352 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-23 15:41:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:56,398 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-23 15:41:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2022-11-23 15:41:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:56,400 INFO L225 Difference]: With dead ends: 26 [2022-11-23 15:41:56,400 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:41:56,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,402 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:56,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:41:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 15:41:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.5625) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-11-23 15:41:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-23 15:41:56,409 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2022-11-23 15:41:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:56,409 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-23 15:41:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-23 15:41:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-23 15:41:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:41:56,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:56,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:41:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:41:56,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 125295272, now seen corresponding path program 1 times [2022-11-23 15:41:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478106598] [2022-11-23 15:41:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:56,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478106598] [2022-11-23 15:41:56,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478106598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:56,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:56,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:41:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656150023] [2022-11-23 15:41:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:56,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:41:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:41:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:41:56,622 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-23 15:41:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:56,674 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-11-23 15:41:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:41:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-23 15:41:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:56,676 INFO L225 Difference]: With dead ends: 47 [2022-11-23 15:41:56,676 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 15:41:56,676 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 [2022-11-23 15:41:56,678 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:56,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 15:41:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2022-11-23 15:41:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-11-23 15:41:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-23 15:41:56,693 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 5 [2022-11-23 15:41:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:56,694 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-23 15:41:56,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-23 15:41:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-23 15:41:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:41:56,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:56,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:41:56,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:41:56,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash -410880876, now seen corresponding path program 1 times [2022-11-23 15:41:56,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:56,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868631528] [2022-11-23 15:41:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:56,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:56,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868631528] [2022-11-23 15:41:56,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868631528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:56,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:56,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:41:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886722548] [2022-11-23 15:41:56,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:56,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:56,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,803 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-23 15:41:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:56,840 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-23 15:41:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-11-23 15:41:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:56,843 INFO L225 Difference]: With dead ends: 29 [2022-11-23 15:41:56,843 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 15:41:56,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,845 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 15:41:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 15:41:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 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) [2022-11-23 15:41:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-11-23 15:41:56,851 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2022-11-23 15:41:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:56,852 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-11-23 15:41:56,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-23 15:41:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-11-23 15:41:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:41:56,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:56,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:56,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:41:56,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 147594806, now seen corresponding path program 1 times [2022-11-23 15:41:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832515256] [2022-11-23 15:41:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:56,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:56,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832515256] [2022-11-23 15:41:56,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832515256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:56,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:56,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:41:56,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437957821] [2022-11-23 15:41:56,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:56,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:56,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:56,990 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-23 15:41:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:57,009 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-23 15:41:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-23 15:41:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:57,011 INFO L225 Difference]: With dead ends: 27 [2022-11-23 15:41:57,011 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 15:41:57,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:57,013 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:57,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 15:41:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 15:41:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-23 15:41:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-23 15:41:57,033 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-23 15:41:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:57,033 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-23 15:41:57,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-23 15:41:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-23 15:41:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:41:57,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:57,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:57,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:41:57,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash 104691787, now seen corresponding path program 1 times [2022-11-23 15:41:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:57,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061948886] [2022-11-23 15:41:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:57,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:57,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061948886] [2022-11-23 15:41:57,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061948886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:57,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:57,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:41:57,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396819745] [2022-11-23 15:41:57,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:57,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:41:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:41:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:41:57,095 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:41:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:57,127 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-23 15:41:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:41:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 15:41:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:57,128 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:41:57,128 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:41:57,128 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 [2022-11-23 15:41:57,129 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:57,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:41:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 15:41:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-23 15:41:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-23 15:41:57,134 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2022-11-23 15:41:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:57,135 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-23 15:41:57,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:41:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-23 15:41:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:41:57,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:57,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-23 15:41:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:41:57,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 765322297, now seen corresponding path program 1 times [2022-11-23 15:41:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:57,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329074472] [2022-11-23 15:41:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:57,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:57,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329074472] [2022-11-23 15:41:57,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329074472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:57,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706382217] [2022-11-23 15:41:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:57,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:57,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:57,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:41:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:57,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:41:57,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:57,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:57,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706382217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:57,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:57,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 15:41:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865886140] [2022-11-23 15:41:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:57,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:41:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:41:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:41:57,421 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 2.0) 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) [2022-11-23 15:41:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:57,471 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-11-23 15:41:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:41:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) 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 10 [2022-11-23 15:41:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:57,473 INFO L225 Difference]: With dead ends: 39 [2022-11-23 15:41:57,473 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:41:57,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:41:57,475 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:57,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:41:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-11-23 15:41:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-23 15:41:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-23 15:41:57,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 10 [2022-11-23 15:41:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:57,481 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-23 15:41:57,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) 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) [2022-11-23 15:41:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-23 15:41:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:41:57,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:57,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2022-11-23 15:41:57,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:41:57,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:57,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2044812506, now seen corresponding path program 1 times [2022-11-23 15:41:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:57,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294443371] [2022-11-23 15:41:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:57,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:57,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294443371] [2022-11-23 15:41:57,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294443371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:57,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363309211] [2022-11-23 15:41:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:57,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:57,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:57,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:57,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:41:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:41:57,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:57,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:58,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363309211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [761310249] [2022-11-23 15:41:58,089 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 15:41:58,089 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:58,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:58,099 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:58,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:58,317 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:41:58,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-23 15:41:58,367 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 15:41:58,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 15:41:58,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:41:58,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:41:58,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:41:58,916 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [761310249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:59,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:59,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 13 [2022-11-23 15:41:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051537311] [2022-11-23 15:41:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:41:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:41:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:41:59,370 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2022-11-23 15:41:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:59,420 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-23 15:41:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:41:59,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 11 [2022-11-23 15:41:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:59,421 INFO L225 Difference]: With dead ends: 25 [2022-11-23 15:41:59,422 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:41:59,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:41:59,423 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:59,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:41:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-23 15:41:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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) [2022-11-23 15:41:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-23 15:41:59,429 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2022-11-23 15:41:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:59,429 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-23 15:41:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2022-11-23 15:41:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-23 15:41:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:41:59,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:59,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:59,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:59,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:41:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1573344127, now seen corresponding path program 1 times [2022-11-23 15:41:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:59,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743396718] [2022-11-23 15:41:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:59,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:59,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743396718] [2022-11-23 15:41:59,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743396718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:59,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572009877] [2022-11-23 15:41:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:59,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:59,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:59,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:41:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:59,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:41:59,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:59,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:59,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572009877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:59,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:59,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-23 15:41:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827721409] [2022-11-23 15:41:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:59,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:41:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:41:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:41:59,875 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-23 15:41:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:59,920 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 15:41:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:41:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-23 15:41:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:59,925 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:41:59,925 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 15:41:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:41:59,928 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:59,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:41:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 15:41:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 15:41:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2022-11-23 15:41:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 15:41:59,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2022-11-23 15:41:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:59,939 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 15:41:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-23 15:41:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 15:41:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:41:59,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:59,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:59,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:00,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:00,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:42:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1529027596, now seen corresponding path program 1 times [2022-11-23 15:42:00,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:00,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590186071] [2022-11-23 15:42:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:00,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:00,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590186071] [2022-11-23 15:42:00,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590186071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547074514] [2022-11-23 15:42:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:00,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:00,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:00,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:00,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:42:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:00,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:42:00,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:00,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:00,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547074514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:00,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758577373] [2022-11-23 15:42:00,391 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-23 15:42:00,391 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:00,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:00,392 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:00,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:00,473 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 15:42:00,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 15:42:00,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-23 15:42:00,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:00,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:00,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:00,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:01,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [758577373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:01,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:01,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 15 [2022-11-23 15:42:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073342735] [2022-11-23 15:42:01,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:01,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:42:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:42:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:42:01,450 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-23 15:42:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:02,020 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-11-23 15:42:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:42:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 15 [2022-11-23 15:42:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:02,021 INFO L225 Difference]: With dead ends: 35 [2022-11-23 15:42:02,021 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:42:02,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:42:02,022 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:02,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 17 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:42:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 15:42:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2022-11-23 15:42:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-23 15:42:02,028 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-11-23 15:42:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:02,028 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-23 15:42:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-23 15:42:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-23 15:42:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:42:02,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:02,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:02,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:42:02,230 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 15:42:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash 861203525, now seen corresponding path program 1 times [2022-11-23 15:42:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519167625] [2022-11-23 15:42:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:42:02,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:02,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519167625] [2022-11-23 15:42:02,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519167625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:02,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135024581] [2022-11-23 15:42:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:02,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:02,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:02,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:42:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:02,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:42:02,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:42:02,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:42:02,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135024581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:02,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544296368] [2022-11-23 15:42:02,476 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:42:02,476 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:02,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:02,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:02,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:02,535 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 15:42:02,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 15:42:02,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-23 15:42:02,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:02,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-11-23 15:42:02,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:02,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:02,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:03,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:03,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:03,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:42:03,169 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:03,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [544296368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:03,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:03,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 17 [2022-11-23 15:42:03,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363494605] [2022-11-23 15:42:03,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:03,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:42:03,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:42:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:42:03,955 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-11-23 15:42:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:04,255 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-23 15:42:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:42:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 20 [2022-11-23 15:42:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:04,256 INFO L225 Difference]: With dead ends: 21 [2022-11-23 15:42:04,256 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:42:04,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:42:04,257 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:04,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:42:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:42:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:42:04,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-23 15:42:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:04,258 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:42:04,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-11-23 15:42:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:42:04,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:42:04,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-23 15:42:04,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-23 15:42:04,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-23 15:42:04,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-23 15:42:04,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-23 15:42:04,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-23 15:42:04,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-23 15:42:04,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-23 15:42:04,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-23 15:42:04,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:04,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:42:04,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point L543-1(line 543) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2022-11-23 15:42:05,183 INFO L899 garLoopResultBuilder]: For program point L519-1(line 519) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L895 garLoopResultBuilder]: At program point L519-2(lines 513 520) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 519) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point L516-1(lines 516 518) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,184 INFO L895 garLoopResultBuilder]: At program point L516-3(lines 516 518) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2022-11-23 15:42:05,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L516-4(lines 516 518) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L537-1(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 537 540) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L533-1(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L537-5(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L533-2(lines 533 536) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L899 garLoopResultBuilder]: For program point L537-6(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,185 INFO L895 garLoopResultBuilder]: At program point L537-7(lines 537 540) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse1 (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0)) (.cse2 (<= |ULTIMATE.start_main_~i~0#1| 2147483647)) (.cse10 (+ |ULTIMATE.start_main_~i~0#1| 1)) (.cse3 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_#t~malloc13#1.base|)) (.cse5 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse7 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse8 (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0)) (.cse9 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse11 (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0)) (.cse12 (= |ULTIMATE.start_main_#t~malloc12#1.offset| 0)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (<= 0 |#StackHeapBarrier|)) (.cse15 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647)) (.cse16 (<= 0 |ULTIMATE.start_main_#t~malloc12#1.base|)) (.cse17 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|)) (.cse18 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~i~1#1| 0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (not (< .cse10 |ULTIMATE.start_main_~length1~0#1|)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~length1~0#1| .cse10) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18))) [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point L537-8(lines 537 540) no Hoare annotation was computed. [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 519) no Hoare annotation was computed. [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point L533-5(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point L533-6(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,186 INFO L895 garLoopResultBuilder]: At program point L533-7(lines 533 536) the Hoare annotation is: (and (let ((.cse0 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse1 (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0)) (.cse2 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|)) (.cse3 (<= 0 |ULTIMATE.start_main_#t~malloc13#1.base|)) (.cse4 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse5 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse6 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse7 (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0)) (.cse8 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse9 (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0)) (.cse10 (= |ULTIMATE.start_main_#t~malloc12#1.offset| 0)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (<= 0 |#StackHeapBarrier|)) (.cse13 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647)) (.cse14 (<= 0 |ULTIMATE.start_main_#t~malloc12#1.base|)) (.cse15 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))) (= |#NULL.base| 0)) [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point L533-8(lines 533 536) no Hoare annotation was computed. [2022-11-23 15:42:05,186 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 15:42:05,187 INFO L899 garLoopResultBuilder]: For program point L517(lines 517 518) no Hoare annotation was computed. [2022-11-23 15:42:05,187 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 533) no Hoare annotation was computed. [2022-11-23 15:42:05,187 INFO L899 garLoopResultBuilder]: For program point L542(line 542) no Hoare annotation was computed. [2022-11-23 15:42:05,187 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2022-11-23 15:42:05,187 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 15:42:05,205 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:05,208 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:42:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:42:05 BoogieIcfgContainer [2022-11-23 15:42:05,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:42:05,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:42:05,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:42:05,247 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:42:05,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:55" (3/4) ... [2022-11-23 15:42:05,251 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:42:05,264 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-23 15:42:05,264 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:42:05,265 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 15:42:05,265 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:42:05,323 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:42:05,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:42:05,324 INFO L158 Benchmark]: Toolchain (without parser) took 11133.73ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 92.2MB in the beginning and 177.3MB in the end (delta: -85.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:42:05,328 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:42:05,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.53ms. Allocated memory is still 136.3MB. Free memory was 92.2MB in the beginning and 75.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.33ms. Allocated memory is still 136.3MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,330 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 136.3MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,330 INFO L158 Benchmark]: RCFGBuilder took 582.03ms. Allocated memory is still 136.3MB. Free memory was 72.3MB in the beginning and 55.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,331 INFO L158 Benchmark]: TraceAbstraction took 9801.54ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 54.9MB in the beginning and 180.4MB in the end (delta: -125.5MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,331 INFO L158 Benchmark]: Witness Printer took 76.95ms. Allocated memory is still 211.8MB. Free memory was 180.4MB in the beginning and 177.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:42:05,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.53ms. Allocated memory is still 136.3MB. Free memory was 92.2MB in the beginning and 75.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.33ms. Allocated memory is still 136.3MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 136.3MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.03ms. Allocated memory is still 136.3MB. Free memory was 72.3MB in the beginning and 55.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9801.54ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 54.9MB in the beginning and 180.4MB in the end (delta: -125.5MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. * Witness Printer took 76.95ms. Allocated memory is still 211.8MB. Free memory was 180.4MB in the beginning and 177.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 533]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 533]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 533]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 533]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 519]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 519]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 221 IncrementalHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 140 mSDtfsCounter, 221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 246 HoareAnnotationTreeSize, 4 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 743 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 10 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 17/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 31, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 78, TOOLS_POST_TIME: 1.5s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 78, TOOLS_QUANTIFIERELIM_TIME: 1.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 134, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 31, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 0.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 355, DAG_COMPRESSION_RETAINED_NODES: 104, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: 1 <= length1 - InvariantResult [Line: 513]: Loop Invariant Derived loop invariant: 1 <= length1 - InvariantResult [Line: 533]: Loop Invariant Derived loop invariant: ((((((((((((((((((0 <= nondetString2 && nondetString2 <= 0) && 1 <= i) && i <= 2147483647) && 0 <= nondetString1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2) || ((((((((((((((((i == 0 && 0 <= nondetString2) && nondetString2 <= 0) && 0 <= nondetString1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2)) && #NULL == 0 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: (((((((((((((((((((0 <= nondetString2 && nondetString2 <= 0) && i <= 2147483647) && i == 0) && 0 <= nondetString1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && !(i + 1 < length1)) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2) && #NULL == 0) || (((((((((((((((((((0 <= nondetString2 && nondetString2 <= 0) && i <= 2147483647) && length1 <= i + 1) && 0 <= nondetString1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && 1 <= i) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:42:05,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99c7709-c983-4889-bd82-5c2be7ebc2a7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE