./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a65335ed794a80f1ca394ca36923b36cd04a5678d21ae98cca1d59ae759f86b2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:36:01,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:36:01,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:36:01,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:36:01,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:36:01,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:36:01,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:36:01,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:36:01,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:36:01,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:36:01,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:36:01,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:36:01,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:36:01,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:36:01,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:36:01,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:36:01,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:36:01,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:36:01,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:36:01,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:36:01,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:36:01,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:36:01,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:36:01,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:36:01,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:36:01,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:36:01,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:36:01,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:36:01,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:36:01,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:36:01,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:36:01,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:36:01,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:36:01,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:36:01,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:36:01,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:36:01,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:36:01,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:36:01,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:36:01,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:36:01,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:36:01,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:36:01,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:36:01,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:36:01,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:36:01,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:36:01,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:36:01,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:36:01,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:36:01,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:36:01,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:36:01,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:36:01,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:36:01,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:36:01,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:36:01,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:36:01,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:36:01,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:36:01,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:36:01,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:36:01,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:36:01,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:36:01,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:36:01,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:36:01,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:36:01,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:36:01,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:36:01,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:36:01,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:36:01,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:36:01,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:36:01,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:36:01,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:36:01,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:01,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:36:01,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:36:01,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:36:01,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:36:01,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:36:01,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:36:01,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:36:01,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:36:01,640 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a65335ed794a80f1ca394ca36923b36cd04a5678d21ae98cca1d59ae759f86b2 [2021-11-12 23:36:01,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:36:02,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:36:02,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:36:02,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:36:02,033 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:36:02,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-11-12 23:36:02,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/data/450164677/1b0108d93c414b0186e64478fe37aa00/FLAG6b7c17181 [2021-11-12 23:36:02,708 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:36:02,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-11-12 23:36:02,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/data/450164677/1b0108d93c414b0186e64478fe37aa00/FLAG6b7c17181 [2021-11-12 23:36:03,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/data/450164677/1b0108d93c414b0186e64478fe37aa00 [2021-11-12 23:36:03,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:36:03,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:36:03,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:03,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:36:03,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:36:03,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83d17be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03, skipping insertion in model container [2021-11-12 23:36:03,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:36:03,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:36:03,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-11-12 23:36:03,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:03,334 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:36:03,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-11-12 23:36:03,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:03,394 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:36:03,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03 WrapperNode [2021-11-12 23:36:03,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:03,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:03,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:36:03,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:36:03,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:03,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:36:03,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:36:03,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:36:03,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:36:03,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:36:03,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:36:03,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:36:03,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (1/1) ... [2021-11-12 23:36:03,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:03,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:36:03,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:36:03,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:36:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:36:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:36:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:36:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:36:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-12 23:36:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:36:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:36:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:36:04,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:36:04,104 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:36:04,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:04 BoogieIcfgContainer [2021-11-12 23:36:04,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:36:04,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:36:04,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:36:04,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:36:04,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:36:03" (1/3) ... [2021-11-12 23:36:04,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589dc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:04, skipping insertion in model container [2021-11-12 23:36:04,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:03" (2/3) ... [2021-11-12 23:36:04,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589dc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:04, skipping insertion in model container [2021-11-12 23:36:04,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:04" (3/3) ... [2021-11-12 23:36:04,118 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-11-12 23:36:04,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:36:04,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:36:04,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:36:04,187 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:36:04,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:36:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 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) [2021-11-12 23:36:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:36:04,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:04,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:04,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:04,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash -211002652, now seen corresponding path program 1 times [2021-11-12 23:36:04,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:04,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350349751] [2021-11-12 23:36:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:04,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:04,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:36:04,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350349751] [2021-11-12 23:36:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350349751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:04,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:04,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:36:04,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477926844] [2021-11-12 23:36:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:04,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:36:04,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:36:04,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:36:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:36:04,502 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-12 23:36:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:04,585 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2021-11-12 23:36:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:36:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 11 [2021-11-12 23:36:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:04,597 INFO L225 Difference]: With dead ends: 38 [2021-11-12 23:36:04,602 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 23:36:04,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:36:04,610 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:04,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 62.89ms Time] [2021-11-12 23:36:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 23:36:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 23:36:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2021-11-12 23:36:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-12 23:36:04,649 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2021-11-12 23:36:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:04,650 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-12 23:36:04,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-12 23:36:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-12 23:36:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:36:04,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:04,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:04,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:36:04,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1792796919, now seen corresponding path program 1 times [2021-11-12 23:36:04,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:04,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199760206] [2021-11-12 23:36:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:04,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:04,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:36:04,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199760206] [2021-11-12 23:36:04,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199760206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:04,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:04,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:36:04,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717313786] [2021-11-12 23:36:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:04,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:36:04,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:36:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:36:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:36:04,949 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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) [2021-11-12 23:36:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:05,193 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-11-12 23:36:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:36:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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) Word has length 13 [2021-11-12 23:36:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:05,197 INFO L225 Difference]: With dead ends: 55 [2021-11-12 23:36:05,197 INFO L226 Difference]: Without dead ends: 35 [2021-11-12 23:36:05,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:36:05,205 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:05,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 72 Invalid, 104 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 146.78ms Time] [2021-11-12 23:36:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-12 23:36:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-11-12 23:36:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2021-11-12 23:36:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-12 23:36:05,227 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2021-11-12 23:36:05,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:05,231 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-12 23:36:05,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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) [2021-11-12 23:36:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-12 23:36:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:36:05,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:05,234 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:05,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:36:05,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:05,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 783629684, now seen corresponding path program 1 times [2021-11-12 23:36:05,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:05,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772037801] [2021-11-12 23:36:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:05,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:05,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:36:05,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772037801] [2021-11-12 23:36:05,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772037801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:36:05,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872329309] [2021-11-12 23:36:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:05,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:36:05,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:36:05,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:36:05,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:36:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:05,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:36:05,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:06,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-12 23:36:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:06,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:06,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:06,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 59 [2021-11-12 23:36:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:06,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872329309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:06,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:36:06,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [6] total 15 [2021-11-12 23:36:06,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647990375] [2021-11-12 23:36:06,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:06,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:36:06,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:36:06,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:36:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:36:06,739 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 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) [2021-11-12 23:36:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:07,046 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-11-12 23:36:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:36:07,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 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) Word has length 15 [2021-11-12 23:36:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:07,051 INFO L225 Difference]: With dead ends: 88 [2021-11-12 23:36:07,051 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 23:36:07,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:36:07,058 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.71ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:07,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 71 Invalid, 140 Unknown, 0 Unchecked, 8.71ms Time], IncrementalHoareTripleChecker [45 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 152.28ms Time] [2021-11-12 23:36:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 23:36:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2021-11-12 23:36:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 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) [2021-11-12 23:36:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-12 23:36:07,074 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2021-11-12 23:36:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:07,074 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-12 23:36:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 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) [2021-11-12 23:36:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-12 23:36:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:36:07,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:07,077 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:07,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:36:07,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-12 23:36:07,291 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1186046424, now seen corresponding path program 1 times [2021-11-12 23:36:07,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:07,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004921953] [2021-11-12 23:36:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:07,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:07,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:36:07,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004921953] [2021-11-12 23:36:07,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004921953] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:36:07,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92696503] [2021-11-12 23:36:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:07,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:36:07,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:36:07,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:36:07,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:36:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:07,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:36:07,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:07,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-12 23:36:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:07,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:08,231 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:36:08,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-12 23:36:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:08,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92696503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:36:08,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2120110432] [2021-11-12 23:36:08,361 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-12 23:36:08,362 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:36:08,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:36:08,373 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:36:08,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:36:08,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:08,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-12 23:36:08,418 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:08,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-12 23:36:08,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:08,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:36:08,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-12 23:36:08,452 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_30|]} [2021-11-12 23:36:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-12 23:36:08,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:36:08,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:36:08,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:36:08,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,613 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-12 23:36:08,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-11-12 23:36:08,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-12 23:36:08,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-12 23:36:08,621 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:36:08,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:08,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-12 23:36:08,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:36:08,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:36:08,660 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-12 23:36:08,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-12 23:36:08,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:36:08,695 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:183, output treesize:145 [2021-11-12 23:36:08,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-12 23:36:08,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 23:36:08,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-12 23:36:08,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 23:36:08,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,920 INFO L180 QuantifierPusher]: treesize reduction 50, result has 60.0 percent of original size [2021-11-12 23:36:08,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 23:36:08,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:36:08,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-12 23:36:08,945 INFO L180 QuantifierPusher]: treesize reduction 50, result has 60.0 percent of original size [2021-11-12 23:36:08,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 23:36:08,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:08,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:36:08,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:08,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:09,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:36:09,036 INFO L180 QuantifierPusher]: treesize reduction 50, result has 71.8 percent of original size [2021-11-12 23:36:09,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:36:09,042 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-12 23:36:09,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:36:09,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-12 23:36:09,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:36:09,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,074 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:36:09,084 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-12 23:36:09,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-12 23:36:09,091 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-12 23:36:09,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-12 23:36:09,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:36:09,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 23:36:09,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:36:09,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:36:09,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 23:36:09,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,141 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:36:09,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:36:09,144 INFO L185 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-11-12 23:36:09,145 INFO L185 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size 42 [2021-11-12 23:36:09,150 INFO L185 QuantifierPusher]: treesize reduction 6, result has 96.5 percent of original size 166 [2021-11-12 23:36:09,160 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:36:12,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:36:12,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:36:12,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-12 23:36:12,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975939709] [2021-11-12 23:36:12,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:36:12,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:36:12,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:36:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:36:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:36:12,107 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 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) [2021-11-12 23:36:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:12,830 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2021-11-12 23:36:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:36:12,831 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 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 17 [2021-11-12 23:36:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:12,834 INFO L225 Difference]: With dead ends: 133 [2021-11-12 23:36:12,834 INFO L226 Difference]: Without dead ends: 131 [2021-11-12 23:36:12,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=348, Invalid=2004, Unknown=0, NotChecked=0, Total=2352 [2021-11-12 23:36:12,837 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 183 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 309.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:12,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 115 Invalid, 326 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [101 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 309.24ms Time] [2021-11-12 23:36:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-12 23:36:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 41. [2021-11-12 23:36:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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) [2021-11-12 23:36:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-11-12 23:36:12,850 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 17 [2021-11-12 23:36:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:12,851 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-11-12 23:36:12,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 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) [2021-11-12 23:36:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-11-12 23:36:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:36:12,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:12,852 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:12,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:36:13,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:36:13,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash 231681319, now seen corresponding path program 2 times [2021-11-12 23:36:13,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:13,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598905670] [2021-11-12 23:36:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:13,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:36:13,099 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:36:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:36:13,151 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:36:13,151 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:36:13,152 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:36:13,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-12 23:36:13,158 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-12 23:36:13,161 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:36:13,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:36:13 BoogieIcfgContainer [2021-11-12 23:36:13,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:36:13,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:36:13,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:36:13,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:36:13,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:04" (3/4) ... [2021-11-12 23:36:13,249 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:36:13,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:36:13,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:36:13,340 INFO L158 Benchmark]: Toolchain (without parser) took 10309.41ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 57.1MB in the beginning and 105.4MB in the end (delta: -48.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,341 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 90.2MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:36:13,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.69ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 57.0MB in the beginning and 89.4MB in the end (delta: -32.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.96ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,342 INFO L158 Benchmark]: Boogie Preprocessor took 36.98ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 86.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,342 INFO L158 Benchmark]: RCFGBuilder took 624.68ms. Allocated memory is still 115.3MB. Free memory was 86.0MB in the beginning and 70.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,343 INFO L158 Benchmark]: TraceAbstraction took 9135.06ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 69.6MB in the beginning and 109.6MB in the end (delta: -40.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,346 INFO L158 Benchmark]: Witness Printer took 90.37ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 105.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:13,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 90.2MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.69ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 57.0MB in the beginning and 89.4MB in the end (delta: -32.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.96ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.98ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 86.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 624.68ms. Allocated memory is still 115.3MB. Free memory was 86.0MB in the beginning and 70.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9135.06ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 69.6MB in the beginning and 109.6MB in the end (delta: -40.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Witness Printer took 90.37ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 105.4MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L87] CALL parse_expression_list (A) [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; VAL [i=-1, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}] [L61] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}] [L63] i++ [L64] str[i] [L65] case 0: VAL [i=0, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=49] [L80] EXPR str[i] VAL [i=0, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=49] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=1, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=50] [L80] EXPR str[i] VAL [i=1, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=50] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=2, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=0] [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={3:0}, str={3:0}, str2={6:0}, str[i]=0, str[start]=49, str[start]=49] [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 VAL [i=2, j=1, start=0, start++=52, str={3:0}, str={3:0}, str2={6:0}, str[i]=0] [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, start++=52, str={3:0}, str={3:0}, str2={6:0}, str[i]=0, str[j]=50, str[j]=50] [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L72] CALL r_strncpy(str2, str+start, j-start+1) [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) [L73] CALL __VERIFIER_assert(j - start + 1 < 2) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293 SdHoareTripleChecker+Valid, 671.19ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 293 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 502.51ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 422 IncrementalHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 57 mSDtfsCounter, 422 mSolverCounterSat, 20.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 4 MinimizatonAttempts, 133 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 927 SizeOfPredicates, 27 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 4/12 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-12 23:36:13,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e6c00-4622-4854-9125-b3febacd97eb/bin/utaipan-vmNK8stdcF/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE