./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/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-a4ecdab [2020-11-30 01:59:20,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:59:20,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:59:20,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:59:20,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:59:20,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:59:20,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:59:20,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:59:20,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:59:20,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:59:20,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:59:20,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:59:20,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:59:20,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:59:20,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:59:20,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:59:20,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:59:20,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:59:20,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:59:20,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:59:20,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:59:20,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:59:20,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:59:20,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:59:20,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:59:20,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:59:20,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:59:20,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:59:20,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:59:20,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:59:20,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:59:21,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:59:21,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:59:21,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:59:21,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:59:21,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:59:21,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:59:21,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:59:21,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:59:21,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:59:21,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:59:21,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:59:21,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:59:21,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:59:21,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:59:21,068 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:59:21,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:59:21,069 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:59:21,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:59:21,069 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:59:21,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:59:21,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:59:21,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:59:21,072 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:59:21,072 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:59:21,072 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:59:21,073 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:59:21,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:59:21,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:59:21,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:59:21,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:59:21,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:59:21,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:59:21,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:59:21,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:59:21,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:59:21,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:59:21,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:59:21,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:59:21,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:59:21,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:59:21,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:59:21,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:59:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:59:21,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:59:21,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:59:21,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:59:21,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:59:21,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:59:21,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:59:21,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:59:21,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:59:21,084 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_1c4a4625-c493-41f7-b959-325d8fa6ff69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8770e865452d763f6a1ae70a92c5caf41552c1e5 [2020-11-30 01:59:21,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:59:21,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:59:21,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:59:21,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:59:21,501 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:59:21,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-30 01:59:21,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/data/22d5475d3/caa2e908e31e4c8a95e50866e269fd91/FLAGd1a404862 [2020-11-30 01:59:22,309 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:59:22,311 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-30 01:59:22,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/data/22d5475d3/caa2e908e31e4c8a95e50866e269fd91/FLAGd1a404862 [2020-11-30 01:59:22,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/data/22d5475d3/caa2e908e31e4c8a95e50866e269fd91 [2020-11-30 01:59:22,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:59:22,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:59:22,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:59:22,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:59:22,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:59:22,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:22" (1/1) ... [2020-11-30 01:59:22,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cb88b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:22, skipping insertion in model container [2020-11-30 01:59:22,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:22" (1/1) ... [2020-11-30 01:59:22,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:59:22,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:59:22,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:59:22,950 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:59:23,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:59:23,040 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:59:23,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23 WrapperNode [2020-11-30 01:59:23,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:59:23,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:59:23,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:59:23,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:59:23,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:59:23,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:59:23,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:59:23,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:59:23,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... [2020-11-30 01:59:23,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:59:23,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:59:23,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:59:23,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:59:23,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/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 [2020-11-30 01:59:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:59:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:59:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:59:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:59:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-11-30 01:59:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:59:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:59:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:59:24,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:59:24,477 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-30 01:59:24,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:24 BoogieIcfgContainer [2020-11-30 01:59:24,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:59:24,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:59:24,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:59:24,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:59:24,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:59:22" (1/3) ... [2020-11-30 01:59:24,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ada2e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:59:24, skipping insertion in model container [2020-11-30 01:59:24,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:23" (2/3) ... [2020-11-30 01:59:24,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ada2e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:59:24, skipping insertion in model container [2020-11-30 01:59:24,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:24" (3/3) ... [2020-11-30 01:59:24,492 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-30 01:59:24,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:59:24,511 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:59:24,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:59:24,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:59:24,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:59:24,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:59:24,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:59:24,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:59:24,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:59:24,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:59:24,570 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:59:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 01:59:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:59:24,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:24,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:24,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:24,607 INFO L82 PathProgramCache]: Analyzing trace with hash -276835480, now seen corresponding path program 1 times [2020-11-30 01:59:24,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:24,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706111773] [2020-11-30 01:59:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:24,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706111773] [2020-11-30 01:59:24,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:59:24,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:59:24,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530214767] [2020-11-30 01:59:24,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:59:24,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:24,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:59:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:59:24,888 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 01:59:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:24,913 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2020-11-30 01:59:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:59:24,916 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 01:59:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:24,938 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:59:24,939 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 01:59:24,942 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 [2020-11-30 01:59:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 01:59:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:59:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:59:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-30 01:59:24,986 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-11-30 01:59:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:24,987 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 01:59:24,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:59:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-30 01:59:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:59:24,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:24,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:24,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:59:24,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1886433394, now seen corresponding path program 1 times [2020-11-30 01:59:24,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:24,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619962313] [2020-11-30 01:59:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:25,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619962313] [2020-11-30 01:59:25,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:59:25,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:59:25,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131283335] [2020-11-30 01:59:25,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:59:25,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:59:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:59:25,339 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 6 states. [2020-11-30 01:59:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:25,605 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-30 01:59:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:59:25,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 01:59:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:25,607 INFO L225 Difference]: With dead ends: 46 [2020-11-30 01:59:25,607 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 01:59:25,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:59:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 01:59:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2020-11-30 01:59:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:59:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-30 01:59:25,620 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2020-11-30 01:59:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:25,621 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-30 01:59:25,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:59:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 01:59:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:59:25,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:25,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:25,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:59:25,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash 906667649, now seen corresponding path program 1 times [2020-11-30 01:59:25,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:25,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136211648] [2020-11-30 01:59:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:25,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136211648] [2020-11-30 01:59:25,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541879581] [2020-11-30 01:59:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/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 [2020-11-30 01:59:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:59:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:59:26,105 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-30 01:59:26,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,252 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,280 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,288 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,298 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,315 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:59:26,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,324 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2020-11-30 01:59:26,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:59:26,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:26,367 INFO L441 ElimStorePlain]: Different costs {0=[v_prenex_4, v_prenex_1], 6=[v_prenex_7, |#memory_int|]} [2020-11-30 01:59:26,386 INFO L384 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 [2020-11-30 01:59:26,388 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,455 INFO L625 ElimStorePlain]: treesize reduction 140, result has 17.2 percent of original size [2020-11-30 01:59:26,460 INFO L384 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 [2020-11-30 01:59:26,461 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,478 INFO L625 ElimStorePlain]: treesize reduction 10, result has 47.4 percent of original size [2020-11-30 01:59:26,478 INFO L513 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-11-30 01:59:26,478 INFO L513 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2020-11-30 01:59:26,479 INFO L545 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,479 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 12 variables, input treesize:179, output treesize:9 [2020-11-30 01:59:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:26,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:59:26,539 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:59:26,540 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,541 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,609 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-11-30 01:59:26,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,611 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,626 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,632 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,636 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,638 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,651 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,654 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,662 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,680 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:26,766 INFO L384 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 [2020-11-30 01:59:26,768 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,778 INFO L384 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 [2020-11-30 01:59:26,784 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,806 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-30 01:59:26,814 INFO L384 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 20 treesize of output 8 [2020-11-30 01:59:26,819 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,828 INFO L384 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 [2020-11-30 01:59:26,830 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:59:26,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:59:26,848 INFO L384 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2020-11-30 01:59:26,851 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,857 INFO L384 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 [2020-11-30 01:59:26,858 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:26,899 INFO L625 ElimStorePlain]: treesize reduction 28, result has 47.2 percent of original size [2020-11-30 01:59:26,900 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-11-30 01:59:26,901 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:130, output treesize:20 [2020-11-30 01:59:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:26,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:59:26,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [7] total 16 [2020-11-30 01:59:26,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256493477] [2020-11-30 01:59:26,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:59:26,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:26,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:59:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:59:26,971 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 11 states. [2020-11-30 01:59:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:27,392 INFO L93 Difference]: Finished difference Result 97 states and 118 transitions. [2020-11-30 01:59:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:59:27,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-11-30 01:59:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:27,394 INFO L225 Difference]: With dead ends: 97 [2020-11-30 01:59:27,395 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 01:59:27,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-11-30 01:59:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 01:59:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 26. [2020-11-30 01:59:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:59:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-30 01:59:27,414 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2020-11-30 01:59:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:27,415 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-30 01:59:27,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:59:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-30 01:59:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:59:27,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:27,419 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:27,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:59:27,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1957873924, now seen corresponding path program 1 times [2020-11-30 01:59:27,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:27,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121548002] [2020-11-30 01:59:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:27,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121548002] [2020-11-30 01:59:27,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966648813] [2020-11-30 01:59:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/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 [2020-11-30 01:59:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:28,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 01:59:28,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:59:28,121 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-30 01:59:28,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,242 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,276 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,293 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:59:28,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,309 INFO L441 ElimStorePlain]: Different costs {0=[v_prenex_13, v_prenex_10], 6=[v_prenex_16, |#memory_int|]} [2020-11-30 01:59:28,320 INFO L384 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 [2020-11-30 01:59:28,321 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,371 INFO L625 ElimStorePlain]: treesize reduction 154, result has 4.3 percent of original size [2020-11-30 01:59:28,371 INFO L513 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2020-11-30 01:59:28,371 INFO L513 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2020-11-30 01:59:28,371 INFO L513 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2020-11-30 01:59:28,372 INFO L545 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 12 variables, input treesize:171, output treesize:7 [2020-11-30 01:59:28,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:59:28,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:59:28,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:59:28,394 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-30 01:59:28,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:59:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:28,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:59:28,459 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,494 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:59:28,494 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,495 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,496 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,497 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,498 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,588 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-11-30 01:59:28,588 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,590 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,593 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:59:28,616 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,618 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,625 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,636 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 01:59:28,721 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-30 01:59:28,725 INFO L384 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 [2020-11-30 01:59:28,728 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,735 INFO L384 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 [2020-11-30 01:59:28,736 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,744 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-11-30 01:59:28,744 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,751 INFO L384 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 [2020-11-30 01:59:28,753 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,757 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-11-30 01:59:28,758 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,761 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-11-30 01:59:28,761 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-30 01:59:28,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:59:28,778 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-11-30 01:59:28,778 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:134, output treesize:22 [2020-11-30 01:59:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:28,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219602071] [2020-11-30 01:59:28,901 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2020-11-30 01:59:28,901 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:59:28,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:59:28,916 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:59:28,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:59:29,576 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:59:30,293 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2020-11-30 01:59:30,689 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-11-30 01:59:31,265 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-11-30 01:59:31,460 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-11-30 01:59:31,709 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-11-30 01:59:31,955 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-11-30 01:59:32,248 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-11-30 01:59:32,695 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-11-30 01:59:33,055 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-11-30 01:59:33,400 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-11-30 01:59:34,023 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-11-30 01:59:34,398 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-11-30 01:59:34,842 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-11-30 01:59:35,557 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 106 [2020-11-30 01:59:35,560 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:59:35,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:59:35,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2020-11-30 01:59:35,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428350241] [2020-11-30 01:59:35,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 01:59:35,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 01:59:35,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2020-11-30 01:59:35,563 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 18 states. [2020-11-30 01:59:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:36,738 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2020-11-30 01:59:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 01:59:36,739 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2020-11-30 01:59:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:36,743 INFO L225 Difference]: With dead ends: 135 [2020-11-30 01:59:36,743 INFO L226 Difference]: Without dead ends: 132 [2020-11-30 01:59:36,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=348, Invalid=2004, Unknown=0, NotChecked=0, Total=2352 [2020-11-30 01:59:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-30 01:59:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 42. [2020-11-30 01:59:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 01:59:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-11-30 01:59:36,773 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 18 [2020-11-30 01:59:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:36,774 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-11-30 01:59:36,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 01:59:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-11-30 01:59:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:59:36,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:36,776 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:36,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:59:36,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1074751622, now seen corresponding path program 2 times [2020-11-30 01:59:36,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:36,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922541644] [2020-11-30 01:59:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:59:37,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:59:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:59:37,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:59:37,142 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:59:37,142 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:59:37,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-30 01:59:37,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:59:37 BoogieIcfgContainer [2020-11-30 01:59:37,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:59:37,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:59:37,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:59:37,191 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:59:37,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:24" (3/4) ... [2020-11-30 01:59:37,194 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:59:37,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c4a4625-c493-41f7-b959-325d8fa6ff69/bin/utaipan/witness.graphml [2020-11-30 01:59:37,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:59:37,254 INFO L168 Benchmark]: Toolchain (without parser) took 14628.79 ms. Allocated memory was 102.8 MB in the beginning and 228.6 MB in the end (delta: 125.8 MB). Free memory was 75.5 MB in the beginning and 108.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 91.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,255 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:59:37,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 102.8 MB. Free memory was 75.2 MB in the beginning and 78.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.88 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,257 INFO L168 Benchmark]: Boogie Preprocessor took 44.51 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 75.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,258 INFO L168 Benchmark]: RCFGBuilder took 1312.89 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 92.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,259 INFO L168 Benchmark]: TraceAbstraction took 12708.21 ms. Allocated memory was 125.8 MB in the beginning and 228.6 MB in the end (delta: 102.8 MB). Free memory was 91.7 MB in the beginning and 111.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,260 INFO L168 Benchmark]: Witness Printer took 62.13 ms. Allocated memory is still 228.6 MB. Free memory was 111.9 MB in the beginning and 108.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:37,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 102.8 MB. Free memory was 75.2 MB in the beginning and 78.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.88 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.51 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 75.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1312.89 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 92.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12708.21 ms. Allocated memory was 125.8 MB in the beginning and 228.6 MB in the end (delta: 102.8 MB). Free memory was 91.7 MB in the beginning and 111.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.13 ms. Allocated memory is still 228.6 MB. Free memory was 111.9 MB in the beginning and 108.8 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "verisec_OpenSER_cases1_stripFullBoth_arr.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 275 SDslu, 286 SDs, 0 SdLazy, 452 SolverSat, 155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 135 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 15548 SizeOfPredicates, 30 NumberOfNonLiveVariables, 220 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...