./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS --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 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 --- 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-8393723 [2022-11-19 06:39:01,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:39:01,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:39:01,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:39:01,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:39:01,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:39:01,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:39:01,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:39:01,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:39:01,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:39:01,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:39:01,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:39:01,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:39:01,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:39:01,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:39:01,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:39:01,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:39:01,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:39:01,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:39:01,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:39:01,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:39:01,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:39:01,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:39:01,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:39:01,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:39:01,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:39:01,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:39:01,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:39:01,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:39:01,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:39:01,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:39:01,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:39:01,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:39:01,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:39:01,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:39:01,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:39:01,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:39:01,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:39:01,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:39:01,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:39:01,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:39:01,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:39:01,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:39:01,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:39:01,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:39:01,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:39:01,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:39:01,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:39:01,381 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:39:01,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:39:01,381 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:39:01,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:39:01,383 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:39:01,383 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:39:01,384 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:39:01,384 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:39:01,384 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:39:01,384 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:39:01,385 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:39:01,385 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:39:01,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:39:01,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:39:01,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:39:01,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:39:01,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:39:01,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:39:01,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:39:01,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:39:01,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:39:01,390 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:39:01,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:39:01,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:39:01,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:39:01,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:39:01,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:39:01,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:39:01,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:39:01,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:39:01,393 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:39:01,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:39:01,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:39:01,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:39:01,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:39:01,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:39:01,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:39:01,394 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_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 [2022-11-19 06:39:01,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:39:01,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:39:01,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:39:01,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:39:01,815 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:39:01,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2022-11-19 06:39:01,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/data/5c2e5e878/8e22efb4b2d043a1a9f1299a8a57a827/FLAG0dd421c1e [2022-11-19 06:39:02,550 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:39:02,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2022-11-19 06:39:02,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/data/5c2e5e878/8e22efb4b2d043a1a9f1299a8a57a827/FLAG0dd421c1e [2022-11-19 06:39:02,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/data/5c2e5e878/8e22efb4b2d043a1a9f1299a8a57a827 [2022-11-19 06:39:02,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:39:02,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:39:02,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:39:02,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:39:02,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:39:02,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:02" (1/1) ... [2022-11-19 06:39:02,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc01898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:02, skipping insertion in model container [2022-11-19 06:39:02,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:02" (1/1) ... [2022-11-19 06:39:02,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:39:02,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:39:03,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:03,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:39:03,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:03,551 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:39:03,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03 WrapperNode [2022-11-19 06:39:03,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:39:03,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:03,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:39:03,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:39:03,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,624 INFO L138 Inliner]: procedures = 117, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-19 06:39:03,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:03,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:39:03,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:39:03,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:39:03,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:39:03,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:39:03,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:39:03,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:39:03,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (1/1) ... [2022-11-19 06:39:03,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:39:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:03,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:39:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:39:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:39:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:39:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:39:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:39:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:39:03,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:39:03,883 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:39:03,885 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:39:04,048 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:39:04,110 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:39:04,111 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:39:04,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:04 BoogieIcfgContainer [2022-11-19 06:39:04,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:39:04,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:39:04,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:39:04,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:39:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:39:02" (1/3) ... [2022-11-19 06:39:04,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b805e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:04, skipping insertion in model container [2022-11-19 06:39:04,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:03" (2/3) ... [2022-11-19 06:39:04,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b805e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:04, skipping insertion in model container [2022-11-19 06:39:04,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:04" (3/3) ... [2022-11-19 06:39:04,143 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca-2.i [2022-11-19 06:39:04,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:39:04,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 06:39:04,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:39:04,302 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;@4f650c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:39:04,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 06:39:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:39:04,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:04,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:39:04,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 06:39:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 3113, now seen corresponding path program 1 times [2022-11-19 06:39:04,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:04,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581432173] [2022-11-19 06:39:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:04,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:04,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581432173] [2022-11-19 06:39:04,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581432173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:04,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:04,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:39:04,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436070721] [2022-11-19 06:39:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:04,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:39:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:39:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:39:04,664 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-19 06:39:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:04,719 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-11-19 06:39:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:39:04,723 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 [2022-11-19 06:39:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:04,733 INFO L225 Difference]: With dead ends: 25 [2022-11-19 06:39:04,734 INFO L226 Difference]: Without dead ends: 12 [2022-11-19 06:39:04,737 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 [2022-11-19 06:39:04,742 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6 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 [2022-11-19 06:39:04,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-19 06:39:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-19 06:39:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-19 06:39:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:39:04,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 2 [2022-11-19 06:39:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:04,786 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:39:04,786 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) [2022-11-19 06:39:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:39:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:39:04,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:04,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:39:04,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:39:04,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 06:39:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 96549, now seen corresponding path program 1 times [2022-11-19 06:39:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:04,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864351578] [2022-11-19 06:39:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:04,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:04,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:04,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864351578] [2022-11-19 06:39:04,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864351578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:04,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:04,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:39:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806241611] [2022-11-19 06:39:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:39:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:39:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:39:04,899 INFO L87 Difference]: Start difference. First operand 12 states and 12 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) [2022-11-19 06:39:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:04,917 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-19 06:39:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:39:04,918 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 [2022-11-19 06:39:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:04,919 INFO L225 Difference]: With dead ends: 12 [2022-11-19 06:39:04,919 INFO L226 Difference]: Without dead ends: 8 [2022-11-19 06:39:04,919 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 [2022-11-19 06:39:04,921 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:04,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-19 06:39:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-19 06:39:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-11-19 06:39:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-19 06:39:04,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2022-11-19 06:39:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:04,927 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-19 06:39:04,928 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) [2022-11-19 06:39:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-19 06:39:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:39:04,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:04,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:39:04,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:39:04,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 06:39:04,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash 92786465, now seen corresponding path program 1 times [2022-11-19 06:39:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442365338] [2022-11-19 06:39:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:05,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442365338] [2022-11-19 06:39:05,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442365338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:05,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:05,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:39:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195950993] [2022-11-19 06:39:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:05,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:39:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:39:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:39:05,130 INFO L87 Difference]: Start difference. First operand 8 states and 8 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) [2022-11-19 06:39:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:05,171 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-19 06:39:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:39:05,172 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 [2022-11-19 06:39:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:05,173 INFO L225 Difference]: With dead ends: 15 [2022-11-19 06:39:05,173 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:39:05,174 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 [2022-11-19 06:39:05,176 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:05,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:39:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 06:39:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-19 06:39:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:39:05,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2022-11-19 06:39:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:05,183 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:39:05,184 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) [2022-11-19 06:39:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:39:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:39:05,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:05,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:39:05,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:39:05,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 06:39:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1418586824, now seen corresponding path program 1 times [2022-11-19 06:39:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484893105] [2022-11-19 06:39:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:05,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484893105] [2022-11-19 06:39:05,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484893105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:05,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:05,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:39:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591293715] [2022-11-19 06:39:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:05,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:39:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:39:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:39:05,304 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-19 06:39:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:05,340 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-19 06:39:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:39:05,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2022-11-19 06:39:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:05,341 INFO L225 Difference]: With dead ends: 14 [2022-11-19 06:39:05,342 INFO L226 Difference]: Without dead ends: 13 [2022-11-19 06:39:05,342 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 [2022-11-19 06:39:05,344 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 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 [2022-11-19 06:39:05,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-19 06:39:05,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-19 06:39:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-11-19 06:39:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-19 06:39:05,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2022-11-19 06:39:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:05,351 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-19 06:39:05,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-19 06:39:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-19 06:39:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:39:05,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:05,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-19 06:39:05,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:39:05,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 06:39:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -846630538, now seen corresponding path program 1 times [2022-11-19 06:39:05,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:05,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814349721] [2022-11-19 06:39:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:05,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814349721] [2022-11-19 06:39:05,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814349721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:39:05,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620538430] [2022-11-19 06:39:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:05,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:05,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:39:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:05,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:39:05,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620538430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:05,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440523351] [2022-11-19 06:39:05,926 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:39:05,926 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:39:05,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:39:05,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:39:05,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:39:06,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-19 06:39:06,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:39:06,162 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 [2022-11-19 06:39:06,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:39:06,262 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 30 treesize of output 25 [2022-11-19 06:39:06,420 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 [2022-11-19 06:39:06,560 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 [2022-11-19 06:39:06,571 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:39:06,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1440523351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:06,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:39:06,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 14 [2022-11-19 06:39:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33952847] [2022-11-19 06:39:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:39:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:39:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:39:06,865 INFO L87 Difference]: Start difference. First operand 13 states and 13 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) [2022-11-19 06:39:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:06,902 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-19 06:39:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:39:06,903 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 10 [2022-11-19 06:39:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:06,904 INFO L225 Difference]: With dead ends: 13 [2022-11-19 06:39:06,904 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:39:06,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:39:06,906 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:06,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:39:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:39:06,909 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) [2022-11-19 06:39:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:39:06,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-19 06:39:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:06,910 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:39:06,911 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) [2022-11-19 06:39:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:39:06,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:39:06,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-19 06:39:06,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-19 06:39:06,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-19 06:39:06,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-19 06:39:06,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-19 06:39:06,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-19 06:39:06,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:07,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:07,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:39:07,223 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,224 INFO L899 garLoopResultBuilder]: For program point L527-1(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,224 INFO L899 garLoopResultBuilder]: For program point L527-2(lines 527 530) no Hoare annotation was computed. [2022-11-19 06:39:07,224 INFO L899 garLoopResultBuilder]: For program point L527-5(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,224 INFO L899 garLoopResultBuilder]: For program point L527-6(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,227 INFO L895 garLoopResultBuilder]: At program point L527-7(lines 527 530) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.offset|) (<= 1 |ULTIMATE.start_main_~length~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 06:39:07,228 INFO L899 garLoopResultBuilder]: For program point L527-8(lines 527 530) no Hoare annotation was computed. [2022-11-19 06:39:07,228 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,229 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:39:07,229 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 532) no Hoare annotation was computed. [2022-11-19 06:39:07,229 INFO L899 garLoopResultBuilder]: For program point L532(line 532) no Hoare annotation was computed. [2022-11-19 06:39:07,229 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,230 INFO L899 garLoopResultBuilder]: For program point L516-3(lines 516 517) no Hoare annotation was computed. [2022-11-19 06:39:07,230 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:39:07,230 INFO L895 garLoopResultBuilder]: At program point L516-5(lines 516 517) the Hoare annotation is: (<= |ULTIMATE.start_main_~length~0#1| 2147483647) [2022-11-19 06:39:07,230 INFO L895 garLoopResultBuilder]: At program point L516-6(lines 516 517) the Hoare annotation is: (<= |ULTIMATE.start_main_~length~0#1| 2147483647) [2022-11-19 06:39:07,231 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 532) no Hoare annotation was computed. [2022-11-19 06:39:07,231 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2022-11-19 06:39:07,235 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 06:39:07,240 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:39:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:39:07 BoogieIcfgContainer [2022-11-19 06:39:07,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:39:07,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:39:07,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:39:07,267 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:39:07,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:04" (3/4) ... [2022-11-19 06:39:07,272 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:39:07,285 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-19 06:39:07,285 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 06:39:07,286 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:39:07,286 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:39:07,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:39:07,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:39:07,338 INFO L158 Benchmark]: Toolchain (without parser) took 4504.25ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 96.2MB in the beginning and 101.3MB in the end (delta: -5.2MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,338 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:39:07,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.67ms. Allocated memory is still 136.3MB. Free memory was 96.0MB in the beginning and 104.8MB in the end (delta: -8.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.07ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 102.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,340 INFO L158 Benchmark]: Boogie Preprocessor took 29.18ms. Allocated memory is still 136.3MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,340 INFO L158 Benchmark]: RCFGBuilder took 477.06ms. Allocated memory is still 136.3MB. Free memory was 101.2MB in the beginning and 87.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,341 INFO L158 Benchmark]: TraceAbstraction took 3131.21ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 103.4MB in the end (delta: -16.3MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,342 INFO L158 Benchmark]: Witness Printer took 70.25ms. Allocated memory is still 186.6MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:39:07,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.67ms. Allocated memory is still 136.3MB. Free memory was 96.0MB in the beginning and 104.8MB in the end (delta: -8.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.07ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 102.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.18ms. Allocated memory is still 136.3MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 477.06ms. Allocated memory is still 136.3MB. Free memory was 101.2MB in the beginning and 87.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3131.21ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 103.4MB in the end (delta: -16.3MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Witness Printer took 70.25ms. Allocated memory is still 186.6MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). 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: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 532]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 532]: 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, 18 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 17 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 40 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/12 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: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME: 0.5s, 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: 20, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 33, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, 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: 80, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 527]: Loop Invariant Derived loop invariant: (((((((((length <= 2147483647 && __builtin_alloca (length * sizeof(char)) == 0) && nondetString <= 0) && 0 <= nondetString) && 0 <= __builtin_alloca (length * sizeof(char))) && 0 <= i) && 0 <= nondetString) && 1 <= length) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: length <= 2147483647 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:39:07,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7ce1d4-727a-49aa-8a01-a4e91a112a07/bin/utaipan-I9t0OCRTmS/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