./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan --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 fa528625528e1eb8428ab738bffd6c9e4b89662e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:15:01,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:15:01,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:15:01,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:15:01,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:15:01,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:15:01,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:15:01,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:15:01,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:15:01,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:15:01,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:15:01,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:15:01,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:15:01,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:15:01,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:15:01,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:15:01,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:15:01,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:15:01,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:15:01,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:15:01,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:15:01,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:15:01,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:15:01,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:15:01,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:15:01,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:15:01,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:15:01,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:15:01,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:15:01,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:15:01,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:15:01,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:15:01,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:15:01,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:15:01,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:15:01,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:15:01,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:15:01,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:15:01,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:15:01,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:15:01,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:15:01,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:15:01,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:15:01,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:15:01,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:15:01,586 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:15:01,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:15:01,587 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:15:01,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:15:01,587 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:15:01,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:15:01,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:15:01,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:15:01,588 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:15:01,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:15:01,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:15:01,588 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:15:01,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:15:01,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:15:01,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:15:01,591 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:15:01,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:15:01,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:15:01,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:15:01,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:15:01,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:15:01,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:15:01,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:15:01,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:15:01,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:15:01,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:15:01,593 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:15:01,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:15:01,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:15:01,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:15:01,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:15:01,594 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-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa528625528e1eb8428ab738bffd6c9e4b89662e [2020-12-09 09:15:01,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:15:01,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:15:01,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:15:01,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:15:01,803 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:15:01,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test24-2.c [2020-12-09 09:15:01,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/data/d7c273224/c4374b3569e14055b299dbec92fc8bfd/FLAG7e5aee9e5 [2020-12-09 09:15:02,210 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:15:02,211 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/sv-benchmarks/c/ldv-regression/test24-2.c [2020-12-09 09:15:02,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/data/d7c273224/c4374b3569e14055b299dbec92fc8bfd/FLAG7e5aee9e5 [2020-12-09 09:15:02,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/data/d7c273224/c4374b3569e14055b299dbec92fc8bfd [2020-12-09 09:15:02,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:15:02,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:15:02,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:15:02,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:15:02,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:15:02,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72cad8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02, skipping insertion in model container [2020-12-09 09:15:02,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:15:02,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:15:02,374 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/sv-benchmarks/c/ldv-regression/test24-2.c[807,820] [2020-12-09 09:15:02,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:15:02,384 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:15:02,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/sv-benchmarks/c/ldv-regression/test24-2.c[807,820] [2020-12-09 09:15:02,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:15:02,416 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:15:02,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02 WrapperNode [2020-12-09 09:15:02,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:15:02,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:15:02,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:15:02,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:15:02,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:15:02,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:15:02,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:15:02,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:15:02,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... [2020-12-09 09:15:02,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:15:02,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:15:02,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:15:02,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:15:02,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:15:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 09:15:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:15:02,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:15:02,733 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 09:15:02,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:02 BoogieIcfgContainer [2020-12-09 09:15:02,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:15:02,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:15:02,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:15:02,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:15:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:15:02" (1/3) ... [2020-12-09 09:15:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ed515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:02, skipping insertion in model container [2020-12-09 09:15:02,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:02" (2/3) ... [2020-12-09 09:15:02,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ed515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:02, skipping insertion in model container [2020-12-09 09:15:02,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:02" (3/3) ... [2020-12-09 09:15:02,742 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-2.c [2020-12-09 09:15:02,756 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:15:02,759 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:15:02,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:15:02,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:15:02,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:15:02,792 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:15:02,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:15:02,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:15:02,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:15:02,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:15:02,793 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:15:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-09 09:15:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:15:02,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:15:02,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:15:02,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:15:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:15:02,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1382612843, now seen corresponding path program 1 times [2020-12-09 09:15:02,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:15:02,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511389662] [2020-12-09 09:15:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:15:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:15:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:02,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511389662] [2020-12-09 09:15:02,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:15:02,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:15:02,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17625851] [2020-12-09 09:15:02,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:15:02,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:15:02,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:15:02,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:15:02,967 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-09 09:15:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:15:02,983 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-12-09 09:15:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:15:02,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 09:15:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:15:02,990 INFO L225 Difference]: With dead ends: 23 [2020-12-09 09:15:02,990 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 09:15:02,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:15:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 09:15:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 09:15:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 09:15:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-09 09:15:03,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-12-09 09:15:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:15:03,015 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-09 09:15:03,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:15:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-09 09:15:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:15:03,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:15:03,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:15:03,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:15:03,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:15:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:15:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1271987069, now seen corresponding path program 1 times [2020-12-09 09:15:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:15:03,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762690112] [2020-12-09 09:15:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:15:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:15:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:03,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762690112] [2020-12-09 09:15:03,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163903123] [2020-12-09 09:15:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:15:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:15:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:15:03,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:15:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:03,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:15:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:03,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [659428532] [2020-12-09 09:15:03,201 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 09:15:03,201 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:15:03,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:15:03,208 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:15:03,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:15:03,725 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:15:03,863 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-12-09 09:15:04,246 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-09 09:15:04,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:15:04,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:15:04,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-12-09 09:15:04,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822145354] [2020-12-09 09:15:04,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:15:04,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:15:04,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:15:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-09 09:15:04,253 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 7 states. [2020-12-09 09:15:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:15:04,271 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-09 09:15:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:15:04,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 09:15:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:15:04,272 INFO L225 Difference]: With dead ends: 20 [2020-12-09 09:15:04,272 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 09:15:04,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-09 09:15:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 09:15:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 09:15:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 09:15:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-09 09:15:04,276 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2020-12-09 09:15:04,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:15:04,277 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-09 09:15:04,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:15:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-09 09:15:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:15:04,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:15:04,278 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:15:04,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 09:15:04,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:15:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:15:04,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1074936653, now seen corresponding path program 2 times [2020-12-09 09:15:04,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:15:04,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814501770] [2020-12-09 09:15:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:15:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:15:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:04,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814501770] [2020-12-09 09:15:04,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575336770] [2020-12-09 09:15:04,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:15:04,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 09:15:04,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:15:04,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:15:04,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:15:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:04,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:15:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:04,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80215249] [2020-12-09 09:15:04,765 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 09:15:04,765 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:15:04,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:15:04,765 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:15:04,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:15:05,104 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:15:05,267 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-12-09 09:15:05,638 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-09 09:15:05,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:15:05,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:15:05,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-12-09 09:15:05,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117345748] [2020-12-09 09:15:05,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 09:15:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:15:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 09:15:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-09 09:15:05,641 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 13 states. [2020-12-09 09:15:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:15:05,663 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-12-09 09:15:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 09:15:05,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-12-09 09:15:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:15:05,663 INFO L225 Difference]: With dead ends: 26 [2020-12-09 09:15:05,663 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 09:15:05,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-09 09:15:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 09:15:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 09:15:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 09:15:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-09 09:15:05,666 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2020-12-09 09:15:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:15:05,666 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-09 09:15:05,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 09:15:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-09 09:15:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:15:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:15:05,667 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:15:05,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-09 09:15:05,869 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:15:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:15:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 408505677, now seen corresponding path program 3 times [2020-12-09 09:15:05,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:15:05,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439921355] [2020-12-09 09:15:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:15:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:15:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:06,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439921355] [2020-12-09 09:15:06,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018328256] [2020-12-09 09:15:06,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:15:06,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 09:15:06,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:15:06,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:15:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:15:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:06,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:15:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:15:06,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641637614] [2020-12-09 09:15:06,261 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 09:15:06,261 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:15:06,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:15:06,261 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:15:06,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:15:06,514 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:15:06,664 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-12-09 09:15:07,033 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-12-09 09:15:07,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:15:07,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:15:07,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2020-12-09 09:15:07,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799546325] [2020-12-09 09:15:07,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-09 09:15:07,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:15:07,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-09 09:15:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=535, Unknown=0, NotChecked=0, Total=812 [2020-12-09 09:15:07,036 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 23 states. [2020-12-09 09:15:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:15:07,058 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-12-09 09:15:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 09:15:07,058 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 18 [2020-12-09 09:15:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:15:07,059 INFO L225 Difference]: With dead ends: 36 [2020-12-09 09:15:07,059 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 09:15:07,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=535, Unknown=0, NotChecked=0, Total=812 [2020-12-09 09:15:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 09:15:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 09:15:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 09:15:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 09:15:07,063 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2020-12-09 09:15:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:15:07,063 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 09:15:07,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-09 09:15:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 09:15:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 09:15:07,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:15:07,064 INFO L422 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:15:07,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-09 09:15:07,265 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:15:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:15:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash 146565965, now seen corresponding path program 4 times [2020-12-09 09:15:07,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:15:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370662682] [2020-12-09 09:15:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:15:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:15:07,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:15:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:15:07,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:15:07,485 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:15:07,486 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:15:07,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-12-09 09:15:07,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:15:07 BoogieIcfgContainer [2020-12-09 09:15:07,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:15:07,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:15:07,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:15:07,528 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:15:07,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:02" (3/4) ... [2020-12-09 09:15:07,530 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 09:15:07,579 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_96dd5ced-9ec0-4d09-ad1f-bbe3bd651c37/bin/utaipan/witness.graphml [2020-12-09 09:15:07,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:15:07,579 INFO L168 Benchmark]: Toolchain (without parser) took 5351.50 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 50.6 MB in the beginning and 45.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,580 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:15:07,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.34 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 61.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 59.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,581 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 58.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,581 INFO L168 Benchmark]: RCFGBuilder took 268.01 ms. Allocated memory is still 83.9 MB. Free memory was 58.2 MB in the beginning and 40.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,581 INFO L168 Benchmark]: TraceAbstraction took 4790.88 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 40.3 MB in the beginning and 49.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,581 INFO L168 Benchmark]: Witness Printer took 51.09 ms. Allocated memory is still 134.2 MB. Free memory was 49.8 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:15:07,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 188.34 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 61.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 59.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 58.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 268.01 ms. Allocated memory is still 83.9 MB. Free memory was 58.2 MB in the beginning and 40.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4790.88 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 40.3 MB in the beginning and 49.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. * Witness Printer took 51.09 ms. Allocated memory is still 134.2 MB. Free memory was 49.8 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] struct dummy ad1[20], *ad2; [L18] int i, j, *pa; [L19] j=0 [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ [L19] COND FALSE !(j<20) [L23] i = __VERIFIER_nondet_int() [L24] COND TRUE i >= 0 && i < 10 [L25] ad2 = ad1 [L26] ad1[i].a = i [L27] pa = &ad1[i].a [L28] EXPR ad2[i].a [L28] i = ad2[i].a + 10 [L29] EXPR \read(*pa) [L29] COND FALSE !(i < *pa) [L12] EXPR ad1[b].a [L12] return ad1[b].a == b; [L32] COND TRUE !check(ad1, i) [L39] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 20, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 0 SDslu, 60 SDs, 0 SdLazy, 49 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 363 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/198 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! Received shutdown request...