./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/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 8770e865452d763f6a1ae70a92c5caf41552c1e5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-12-03 12:39:13,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:39:13,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:39:13,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:39:13,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:39:13,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:39:14,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:39:14,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:39:14,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:39:14,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:39:14,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:39:14,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:39:14,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:39:14,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:39:14,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:39:14,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:39:14,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:39:14,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:39:14,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:39:14,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:39:14,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:39:14,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:39:14,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:39:14,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:39:14,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:39:14,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:39:14,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:39:14,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:39:14,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:39:14,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:39:14,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:39:14,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:39:14,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:39:14,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:39:14,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:39:14,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:39:14,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:39:14,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:39:14,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:39:14,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:39:14,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:39:14,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:39:14,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:39:14,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:39:14,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:39:14,123 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:39:14,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:39:14,123 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:39:14,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:39:14,123 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:39:14,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:39:14,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:39:14,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:39:14,125 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:39:14,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:39:14,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:39:14,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:39:14,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:39:14,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:39:14,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:39:14,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:39:14,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:39:14,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:39:14,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:39:14,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:39:14,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:39:14,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:39:14,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:39:14,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:39:14,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:39:14,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:39:14,130 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:39:14,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:39:14,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:39:14,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:39:14,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:39:14,131 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_859b0192-8b1c-4c40-9175-31a341efc80b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8770e865452d763f6a1ae70a92c5caf41552c1e5 [2020-12-03 12:39:14,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:39:14,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:39:14,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:39:14,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:39:14,501 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:39:14,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:39:14,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/data/5f113c208/3069d05e083841f499541d90b405c6f8/FLAG6eaacaf94 [2020-12-03 12:39:15,180 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:39:15,181 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:39:15,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/data/5f113c208/3069d05e083841f499541d90b405c6f8/FLAG6eaacaf94 [2020-12-03 12:39:15,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/data/5f113c208/3069d05e083841f499541d90b405c6f8 [2020-12-03 12:39:15,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:39:15,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:39:15,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:15,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:39:15,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:39:15,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:15,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb2cc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15, skipping insertion in model container [2020-12-03 12:39:15,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:15,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:39:15,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:39:15,769 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_859b0192-8b1c-4c40-9175-31a341efc80b/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2020-12-03 12:39:15,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:15,846 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:39:15,866 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_859b0192-8b1c-4c40-9175-31a341efc80b/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2020-12-03 12:39:15,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:15,926 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:39:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15 WrapperNode [2020-12-03 12:39:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:15,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:15,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:39:15,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:39:15,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:15,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:15,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:15,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:39:15,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:39:15,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:39:16,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... [2020-12-03 12:39:16,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:39:16,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:39:16,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:39:16,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:39:16,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/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 [2020-12-03 12:39:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:39:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:39:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:39:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:39:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-03 12:39:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:39:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:39:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:39:16,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:39:16,800 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-03 12:39:16,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:16 BoogieIcfgContainer [2020-12-03 12:39:16,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:39:16,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:39:16,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:39:16,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:39:16,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:39:15" (1/3) ... [2020-12-03 12:39:16,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6fd07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:16, skipping insertion in model container [2020-12-03 12:39:16,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:15" (2/3) ... [2020-12-03 12:39:16,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6fd07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:16, skipping insertion in model container [2020-12-03 12:39:16,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:16" (3/3) ... [2020-12-03 12:39:16,817 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:39:16,831 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:39:16,835 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:39:16,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:39:16,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:39:16,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:39:16,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:39:16,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:39:16,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:39:16,886 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:39:16,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:39:16,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:39:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-03 12:39:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:39:16,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:16,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:39:16,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:16,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1412724868, now seen corresponding path program 1 times [2020-12-03 12:39:16,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:16,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129002745] [2020-12-03 12:39:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:17,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129002745] [2020-12-03 12:39:17,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:39:17,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:39:17,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818089630] [2020-12-03 12:39:17,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:39:17,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:39:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:39:17,142 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-03 12:39:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:17,160 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2020-12-03 12:39:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:39:17,162 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-03 12:39:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:17,183 INFO L225 Difference]: With dead ends: 38 [2020-12-03 12:39:17,184 INFO L226 Difference]: Without dead ends: 17 [2020-12-03 12:39:17,186 INFO L677 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 [2020-12-03 12:39:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-03 12:39:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-03 12:39:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-03 12:39:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-12-03 12:39:17,222 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2020-12-03 12:39:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:17,222 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-12-03 12:39:17,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:39:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-12-03 12:39:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:39:17,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:17,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:39:17,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:39:17,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1180172420, now seen corresponding path program 1 times [2020-12-03 12:39:17,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:17,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928236899] [2020-12-03 12:39:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:17,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928236899] [2020-12-03 12:39:17,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:39:17,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:39:17,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860083872] [2020-12-03 12:39:17,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:39:17,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:39:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:39:17,536 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2020-12-03 12:39:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:17,761 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-12-03 12:39:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:39:17,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-03 12:39:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:17,766 INFO L225 Difference]: With dead ends: 44 [2020-12-03 12:39:17,766 INFO L226 Difference]: Without dead ends: 42 [2020-12-03 12:39:17,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-03 12:39:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-03 12:39:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2020-12-03 12:39:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:39:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-12-03 12:39:17,782 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2020-12-03 12:39:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:17,782 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-12-03 12:39:17,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:39:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-12-03 12:39:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:39:17,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:17,784 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:39:17,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:39:17,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:17,789 INFO L82 PathProgramCache]: Analyzing trace with hash 541504680, now seen corresponding path program 1 times [2020-12-03 12:39:17,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:17,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808607729] [2020-12-03 12:39:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:17,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808607729] [2020-12-03 12:39:17,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55376110] [2020-12-03 12:39:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/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 [2020-12-03 12:39:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:18,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:39:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:39:18,148 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-03 12:39:18,148 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:39:18,218 INFO L382 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 3 [2020-12-03 12:39:18,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:39:18,241 INFO L382 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 [2020-12-03 12:39:18,243 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,254 INFO L625 ElimStorePlain]: treesize reduction 10, result has 47.4 percent of original size [2020-12-03 12:39:18,255 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,256 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:39, output treesize:9 [2020-12-03 12:39:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:18,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:39:18,333 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-03 12:39:18,333 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,335 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,338 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,340 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,403 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-12-03 12:39:18,403 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,406 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,410 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,413 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,416 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,419 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,422 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-03 12:39:18,433 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,438 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,445 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,454 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-03 12:39:18,463 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,466 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,469 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:18,521 INFO L382 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 9 treesize of output 3 [2020-12-03 12:39:18,522 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,528 INFO L382 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 9 treesize of output 3 [2020-12-03 12:39:18,530 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,540 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:39:18,541 INFO L382 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 19 treesize of output 19 [2020-12-03 12:39:18,544 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,546 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:18,565 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:18,631 INFO L625 ElimStorePlain]: treesize reduction 67, result has 26.4 percent of original size [2020-12-03 12:39:18,632 INFO L515 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2020-12-03 12:39:18,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-03 12:39:18,634 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:128, output treesize:20 [2020-12-03 12:39:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:18,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-03 12:39:18,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [7] total 16 [2020-12-03 12:39:18,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106641479] [2020-12-03 12:39:18,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-03 12:39:18,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:18,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-03 12:39:18,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-12-03 12:39:18,704 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 11 states. [2020-12-03 12:39:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:19,052 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2020-12-03 12:39:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-03 12:39:19,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-12-03 12:39:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:19,054 INFO L225 Difference]: With dead ends: 94 [2020-12-03 12:39:19,054 INFO L226 Difference]: Without dead ends: 54 [2020-12-03 12:39:19,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-12-03 12:39:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-03 12:39:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2020-12-03 12:39:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-03 12:39:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-03 12:39:19,061 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2020-12-03 12:39:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:19,062 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-03 12:39:19,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-03 12:39:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-03 12:39:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:39:19,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:19,063 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:39:19,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-03 12:39:19,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1280326229, now seen corresponding path program 1 times [2020-12-03 12:39:19,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:19,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336229896] [2020-12-03 12:39:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:19,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336229896] [2020-12-03 12:39:19,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134591416] [2020-12-03 12:39:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/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 [2020-12-03 12:39:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:19,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-03 12:39:19,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:39:19,560 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-03 12:39:19,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:39:19,606 INFO L382 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 [2020-12-03 12:39:19,607 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:19,620 INFO L625 ElimStorePlain]: treesize reduction 18, result has 28.0 percent of original size [2020-12-03 12:39:19,620 INFO L515 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-12-03 12:39:19,621 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-03 12:39:19,622 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:7 [2020-12-03 12:39:19,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:39:19,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-03 12:39:19,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:39:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:19,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:39:19,698 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,736 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-03 12:39:19,736 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,739 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,740 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,849 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-12-03 12:39:19,854 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,859 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,866 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,869 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:39:19,871 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,873 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,876 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-03 12:39:19,896 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,901 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,911 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,915 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-03 12:39:19,921 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,934 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,936 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-03 12:39:19,979 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-03 12:39:19,981 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-03 12:39:19,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:19,990 INFO L382 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 9 treesize of output 3 [2020-12-03 12:39:19,992 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:19,998 INFO L382 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 9 treesize of output 3 [2020-12-03 12:39:19,999 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-03 12:39:20,035 INFO L625 ElimStorePlain]: treesize reduction 67, result has 29.5 percent of original size [2020-12-03 12:39:20,036 INFO L515 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2020-12-03 12:39:20,037 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-03 12:39:20,038 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:132, output treesize:22 [2020-12-03 12:39:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:20,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530629591] [2020-12-03 12:39:20,123 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-12-03 12:39:20,124 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:39:20,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:39:20,133 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:39:20,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:39:20,688 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:39:21,164 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-12-03 12:39:21,459 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-12-03 12:39:21,892 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-03 12:39:22,063 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-12-03 12:39:22,260 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-03 12:39:22,583 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-12-03 12:39:23,138 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-03 12:39:23,553 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-12-03 12:39:23,945 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-12-03 12:39:23,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:39:23,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:39:23,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2020-12-03 12:39:23,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32244415] [2020-12-03 12:39:23,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-03 12:39:23,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:23,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-03 12:39:23,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2020-12-03 12:39:23,950 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 19 states. [2020-12-03 12:39:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:25,007 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2020-12-03 12:39:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-03 12:39:25,007 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2020-12-03 12:39:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:25,010 INFO L225 Difference]: With dead ends: 143 [2020-12-03 12:39:25,010 INFO L226 Difference]: Without dead ends: 141 [2020-12-03 12:39:25,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=487, Invalid=2483, Unknown=0, NotChecked=0, Total=2970 [2020-12-03 12:39:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-03 12:39:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 41. [2020-12-03 12:39:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-03 12:39:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-12-03 12:39:25,023 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 17 [2020-12-03 12:39:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:25,024 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-12-03 12:39:25,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-03 12:39:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-12-03 12:39:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-03 12:39:25,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:25,041 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:39:25,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:39:25,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash -989518938, now seen corresponding path program 2 times [2020-12-03 12:39:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:25,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810217462] [2020-12-03 12:39:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:25,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:25,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:25,348 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:39:25,349 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:39:25,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-03 12:39:25,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:39:25 BoogieIcfgContainer [2020-12-03 12:39:25,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:39:25,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:39:25,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:39:25,386 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:39:25,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:16" (3/4) ... [2020-12-03 12:39:25,388 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:39:25,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_859b0192-8b1c-4c40-9175-31a341efc80b/bin/utaipan/witness.graphml [2020-12-03 12:39:25,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:39:25,432 INFO L168 Benchmark]: Toolchain (without parser) took 9911.44 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 77.6 MB in the beginning and 76.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,432 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:25,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.98 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 79.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.92 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 77.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,434 INFO L168 Benchmark]: Boogie Preprocessor took 33.73 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 76.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,434 INFO L168 Benchmark]: RCFGBuilder took 783.60 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 78.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,435 INFO L168 Benchmark]: TraceAbstraction took 8574.50 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 78.0 MB in the beginning and 79.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,435 INFO L168 Benchmark]: Witness Printer took 45.99 ms. Allocated memory is still 182.5 MB. Free memory was 79.5 MB in the beginning and 76.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:25,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.98 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 79.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.92 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 77.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.73 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 76.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 783.60 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 78.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8574.50 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 78.0 MB in the beginning and 79.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.99 ms. Allocated memory is still 182.5 MB. Free memory was 79.5 MB in the beginning and 76.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [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')) [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 [L41] return strncpy(dest,src,n); [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 343 SDslu, 293 SDs, 0 SdLazy, 528 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 144 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 14144 SizeOfPredicates, 27 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 23 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! Received shutdown request...