./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c --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_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/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 ca35bd50d888047fd624bd95d9bb19453630de07 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:36:10,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:36:10,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:36:11,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:36:11,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:36:11,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:36:11,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:36:11,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:36:11,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:36:11,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:36:11,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:36:11,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:36:11,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:36:11,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:36:11,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:36:11,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:36:11,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:36:11,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:36:11,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:36:11,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:36:11,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:36:11,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:36:11,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:36:11,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:36:11,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:36:11,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:36:11,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:36:11,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:36:11,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:36:11,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:36:11,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:36:11,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:36:11,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:36:11,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:36:11,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:36:11,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:36:11,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:36:11,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:36:11,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:36:11,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:36:11,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:36:11,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:36:11,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:36:11,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:36:11,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:36:11,131 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:36:11,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:36:11,131 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:36:11,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:36:11,132 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:36:11,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:36:11,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:36:11,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:36:11,133 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:36:11,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:36:11,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:36:11,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:36:11,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:36:11,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:36:11,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:36:11,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:36:11,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:36:11,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:36:11,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:36:11,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:36:11,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:36:11,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:36:11,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:36:11,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:36:11,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:36:11,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:36:11,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:36:11,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:36:11,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:36:11,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:36:11,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:36:11,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:36:11,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:36:11,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:36:11,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:36:11,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:36:11,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:36:11,142 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_92e5370c-8059-4525-b6fc-f601b02d90a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca35bd50d888047fd624bd95d9bb19453630de07 [2020-11-30 01:36:11,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:36:11,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:36:11,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:36:11,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:36:11,483 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:36:11,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2020-11-30 01:36:11,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/data/68a8f956d/59edae558f5447889399b30342f9deae/FLAG662949bc7 [2020-11-30 01:36:12,325 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:36:12,326 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2020-11-30 01:36:12,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/data/68a8f956d/59edae558f5447889399b30342f9deae/FLAG662949bc7 [2020-11-30 01:36:12,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/data/68a8f956d/59edae558f5447889399b30342f9deae [2020-11-30 01:36:12,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:36:12,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:36:12,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:36:12,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:36:12,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:36:12,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:36:12" (1/1) ... [2020-11-30 01:36:12,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df15a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:12, skipping insertion in model container [2020-11-30 01:36:12,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:36:12" (1/1) ... [2020-11-30 01:36:12,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:36:12,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:36:13,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:36:13,033 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:36:13,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:36:13,078 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:36:13,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13 WrapperNode [2020-11-30 01:36:13,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:36:13,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:36:13,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:36:13,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:36:13,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:36:13,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:36:13,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:36:13,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:36:13,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... [2020-11-30 01:36:13,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:36:13,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:36:13,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:36:13,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:36:13,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/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 01:36:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:36:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:36:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:36:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:36:14,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:36:14,059 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 01:36:14,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:14 BoogieIcfgContainer [2020-11-30 01:36:14,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:36:14,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:36:14,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:36:14,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:36:14,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:36:12" (1/3) ... [2020-11-30 01:36:14,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5668f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:36:14, skipping insertion in model container [2020-11-30 01:36:14,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:13" (2/3) ... [2020-11-30 01:36:14,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5668f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:36:14, skipping insertion in model container [2020-11-30 01:36:14,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:14" (3/3) ... [2020-11-30 01:36:14,073 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-11-30 01:36:14,085 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:36:14,090 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:36:14,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:36:14,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:36:14,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:36:14,145 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:36:14,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:36:14,146 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:36:14,146 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:36:14,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:36:14,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:36:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:36:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:36:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:14,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:36:14,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash 6892918, now seen corresponding path program 1 times [2020-11-30 01:36:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:14,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420954555] [2020-11-30 01:36:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:14,445 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 01:36:14,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420954555] [2020-11-30 01:36:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:14,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:36:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559110034] [2020-11-30 01:36:14,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:14,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:14,483 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-11-30 01:36:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:14,586 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2020-11-30 01:36:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:14,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:36:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:14,599 INFO L225 Difference]: With dead ends: 86 [2020-11-30 01:36:14,600 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 01:36:14,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 01:36:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 01:36:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:36:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2020-11-30 01:36:14,654 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 4 [2020-11-30 01:36:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:14,655 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2020-11-30 01:36:14,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2020-11-30 01:36:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:36:14,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:14,656 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-30 01:36:14,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:36:14,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash -809115593, now seen corresponding path program 1 times [2020-11-30 01:36:14,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:14,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610458378] [2020-11-30 01:36:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:14,756 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 01:36:14,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610458378] [2020-11-30 01:36:14,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689337884] [2020-11-30 01:36:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/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 01:36:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:14,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:36:14,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:14,848 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 01:36:14,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:14,889 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:36:14,889 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:36:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:36:14,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:36:14,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2020-11-30 01:36:14,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478107166] [2020-11-30 01:36:14,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:14,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:36:14,911 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand 3 states. [2020-11-30 01:36:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:15,017 INFO L93 Difference]: Finished difference Result 125 states and 212 transitions. [2020-11-30 01:36:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:15,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 01:36:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:15,021 INFO L225 Difference]: With dead ends: 125 [2020-11-30 01:36:15,022 INFO L226 Difference]: Without dead ends: 99 [2020-11-30 01:36:15,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:36:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-30 01:36:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-30 01:36:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-30 01:36:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 165 transitions. [2020-11-30 01:36:15,066 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 165 transitions. Word has length 7 [2020-11-30 01:36:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:15,067 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 165 transitions. [2020-11-30 01:36:15,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 165 transitions. [2020-11-30 01:36:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:36:15,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:15,069 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:15,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:36:15,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1336180149, now seen corresponding path program 1 times [2020-11-30 01:36:15,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:15,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291773343] [2020-11-30 01:36:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:15,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291773343] [2020-11-30 01:36:15,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:15,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:36:15,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333689151] [2020-11-30 01:36:15,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:15,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:15,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:15,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:15,402 INFO L87 Difference]: Start difference. First operand 99 states and 165 transitions. Second operand 3 states. [2020-11-30 01:36:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:15,566 INFO L93 Difference]: Finished difference Result 159 states and 263 transitions. [2020-11-30 01:36:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:15,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 01:36:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:15,571 INFO L225 Difference]: With dead ends: 159 [2020-11-30 01:36:15,571 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 01:36:15,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 01:36:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-11-30 01:36:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-30 01:36:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 174 transitions. [2020-11-30 01:36:15,604 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 174 transitions. Word has length 20 [2020-11-30 01:36:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:15,605 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 174 transitions. [2020-11-30 01:36:15,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 174 transitions. [2020-11-30 01:36:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:36:15,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:15,608 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:15,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:36:15,609 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1700449921, now seen corresponding path program 2 times [2020-11-30 01:36:15,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:15,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157573844] [2020-11-30 01:36:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:36:15,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157573844] [2020-11-30 01:36:15,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:15,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:36:15,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740942637] [2020-11-30 01:36:15,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:15,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:15,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:15,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:15,653 INFO L87 Difference]: Start difference. First operand 107 states and 174 transitions. Second operand 3 states. [2020-11-30 01:36:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:15,758 INFO L93 Difference]: Finished difference Result 168 states and 271 transitions. [2020-11-30 01:36:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:15,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 01:36:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:15,760 INFO L225 Difference]: With dead ends: 168 [2020-11-30 01:36:15,761 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 01:36:15,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 01:36:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-30 01:36:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 01:36:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 97 transitions. [2020-11-30 01:36:15,772 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 97 transitions. Word has length 20 [2020-11-30 01:36:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:15,773 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 97 transitions. [2020-11-30 01:36:15,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2020-11-30 01:36:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:36:15,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:15,774 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:15,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:36:15,775 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash -160049449, now seen corresponding path program 1 times [2020-11-30 01:36:15,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:15,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166072382] [2020-11-30 01:36:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:36:15,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166072382] [2020-11-30 01:36:15,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:15,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:36:15,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970856758] [2020-11-30 01:36:15,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:15,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:15,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:15,871 INFO L87 Difference]: Start difference. First operand 62 states and 97 transitions. Second operand 3 states. [2020-11-30 01:36:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:16,005 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2020-11-30 01:36:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:16,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 01:36:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:16,009 INFO L225 Difference]: With dead ends: 108 [2020-11-30 01:36:16,010 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 01:36:16,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:36:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 01:36:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-11-30 01:36:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 01:36:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2020-11-30 01:36:16,033 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 24 [2020-11-30 01:36:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:16,035 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2020-11-30 01:36:16,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2020-11-30 01:36:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:36:16,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:16,038 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:16,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:36:16,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:16,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1660912714, now seen corresponding path program 1 times [2020-11-30 01:36:16,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:16,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066938515] [2020-11-30 01:36:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:16,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066938515] [2020-11-30 01:36:16,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817287461] [2020-11-30 01:36:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/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 01:36:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:16,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:36:16,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:16,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:16,375 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:36:16,382 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:36:16,404 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:36:16,405 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:36:16,422 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:36:16,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:36:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 01:36:16,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:36:16,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2020-11-30 01:36:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960389343] [2020-11-30 01:36:16,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:16,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:16,448 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2020-11-30 01:36:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:16,504 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2020-11-30 01:36:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:16,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-11-30 01:36:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:16,506 INFO L225 Difference]: With dead ends: 120 [2020-11-30 01:36:16,506 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 01:36:16,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 01:36:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-11-30 01:36:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-30 01:36:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2020-11-30 01:36:16,521 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 38 [2020-11-30 01:36:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:16,522 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2020-11-30 01:36:16,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2020-11-30 01:36:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 01:36:16,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:16,524 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:16,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:16,746 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1588874347, now seen corresponding path program 1 times [2020-11-30 01:36:16,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:16,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012490470] [2020-11-30 01:36:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:16,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012490470] [2020-11-30 01:36:16,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721559513] [2020-11-30 01:36:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:36:16,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 01:36:16,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 01:36:17,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:36:17,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-11-30 01:36:17,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073032559] [2020-11-30 01:36:17,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:36:17,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:17,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:36:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:17,005 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand 4 states. [2020-11-30 01:36:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:17,230 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2020-11-30 01:36:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:36:17,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-11-30 01:36:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:17,233 INFO L225 Difference]: With dead ends: 236 [2020-11-30 01:36:17,233 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 01:36:17,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 01:36:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-11-30 01:36:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 01:36:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2020-11-30 01:36:17,258 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 40 [2020-11-30 01:36:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:17,259 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2020-11-30 01:36:17,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:36:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2020-11-30 01:36:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-30 01:36:17,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:17,267 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:17,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:17,477 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash -81289654, now seen corresponding path program 1 times [2020-11-30 01:36:17,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:17,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724754546] [2020-11-30 01:36:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:17,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724754546] [2020-11-30 01:36:17,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98963599] [2020-11-30 01:36:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:36:17,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 01:36:17,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 01:36:17,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:36:17,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-11-30 01:36:17,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567619509] [2020-11-30 01:36:17,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:36:17,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:36:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:17,705 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 4 states. [2020-11-30 01:36:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:17,889 INFO L93 Difference]: Finished difference Result 246 states and 291 transitions. [2020-11-30 01:36:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:36:17,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-11-30 01:36:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:17,901 INFO L225 Difference]: With dead ends: 246 [2020-11-30 01:36:17,904 INFO L226 Difference]: Without dead ends: 155 [2020-11-30 01:36:17,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-30 01:36:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2020-11-30 01:36:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-30 01:36:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2020-11-30 01:36:17,931 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 54 [2020-11-30 01:36:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:17,932 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2020-11-30 01:36:17,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:36:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2020-11-30 01:36:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 01:36:17,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:17,945 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:18,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:18,158 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash -320697252, now seen corresponding path program 1 times [2020-11-30 01:36:18,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:36:18,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550918154] [2020-11-30 01:36:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:36:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-30 01:36:18,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550918154] [2020-11-30 01:36:18,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757159840] [2020-11-30 01:36:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:36:18,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 01:36:18,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 01:36:18,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:36:18,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-30 01:36:18,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542708273] [2020-11-30 01:36:18,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:36:18,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:36:18,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:36:18,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:36:18,460 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 3 states. [2020-11-30 01:36:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:18,481 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2020-11-30 01:36:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:36:18,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 01:36:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:18,484 INFO L225 Difference]: With dead ends: 199 [2020-11-30 01:36:18,485 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:36:18,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:36:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:36:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:36:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:36:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:36:18,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2020-11-30 01:36:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:18,489 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:36:18,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:36:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:36:18,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:36:18,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:36:18,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:36:19,718 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:36:19,719 INFO L277 CegarLoopResult]: At program point L218(lines 10 219) the Hoare annotation is: true [2020-11-30 01:36:19,719 INFO L270 CegarLoopResult]: At program point L70(lines 70 187) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,719 INFO L270 CegarLoopResult]: At program point L62(lines 62 191) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,720 INFO L274 CegarLoopResult]: For program point L153-1(lines 76 185) no Hoare annotation was computed. [2020-11-30 01:36:19,720 INFO L270 CegarLoopResult]: At program point L54(lines 54 195) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,720 INFO L270 CegarLoopResult]: At program point L178(lines 24 213) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,720 INFO L274 CegarLoopResult]: For program point L46(lines 46 199) no Hoare annotation was computed. [2020-11-30 01:36:19,720 INFO L270 CegarLoopResult]: At program point L38(lines 38 203) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,721 INFO L270 CegarLoopResult]: At program point L47(lines 46 199) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2020-11-30 01:36:19,721 INFO L274 CegarLoopResult]: For program point L171-1(lines 76 185) no Hoare annotation was computed. [2020-11-30 01:36:19,721 INFO L270 CegarLoopResult]: At program point L31(lines 31 206) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,721 INFO L270 CegarLoopResult]: At program point L122(lines 115 124) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2020-11-30 01:36:19,721 INFO L270 CegarLoopResult]: At program point L114(lines 107 125) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2020-11-30 01:36:19,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:36:19,722 INFO L274 CegarLoopResult]: For program point L107(lines 107 125) no Hoare annotation was computed. [2020-11-30 01:36:19,722 INFO L274 CegarLoopResult]: For program point L74(lines 74 185) no Hoare annotation was computed. [2020-11-30 01:36:19,722 INFO L270 CegarLoopResult]: At program point L66(lines 66 189) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:36:19,722 INFO L270 CegarLoopResult]: At program point L58(lines 58 193) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,722 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-30 01:36:19,722 INFO L277 CegarLoopResult]: At program point L215(lines 10 219) the Hoare annotation is: true [2020-11-30 01:36:19,723 INFO L274 CegarLoopResult]: For program point L116(lines 116 120) no Hoare annotation was computed. [2020-11-30 01:36:19,723 INFO L270 CegarLoopResult]: At program point L50(lines 50 197) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,723 INFO L274 CegarLoopResult]: For program point L174(lines 174 176) no Hoare annotation was computed. [2020-11-30 01:36:19,723 INFO L274 CegarLoopResult]: For program point L108(lines 108 112) no Hoare annotation was computed. [2020-11-30 01:36:19,725 INFO L270 CegarLoopResult]: At program point L75(lines 74 185) the Hoare annotation is: (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8672 ULTIMATE.start_main_~s__state~0)) [2020-11-30 01:36:19,725 INFO L270 CegarLoopResult]: At program point L42(lines 42 201) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,726 INFO L270 CegarLoopResult]: At program point L34(lines 34 205) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-30 01:36:19,726 INFO L270 CegarLoopResult]: At program point L175(lines 10 219) the Hoare annotation is: false [2020-11-30 01:36:19,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:36:19 BoogieIcfgContainer [2020-11-30 01:36:19,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:36:19,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:36:19,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:36:19,765 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:36:19,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:14" (3/4) ... [2020-11-30 01:36:19,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:36:19,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 01:36:19,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:36:19,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:36:19,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:36:19,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_92e5370c-8059-4525-b6fc-f601b02d90a2/bin/utaipan/witness.graphml [2020-11-30 01:36:19,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:36:19,879 INFO L168 Benchmark]: Toolchain (without parser) took 7185.28 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.3 MB in the beginning and 53.1 MB in the end (delta: 33.2 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,879 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:36:19,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.58 ms. Allocated memory is still 117.4 MB. Free memory was 86.1 MB in the beginning and 93.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.63 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,881 INFO L168 Benchmark]: Boogie Preprocessor took 51.76 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,881 INFO L168 Benchmark]: RCFGBuilder took 869.89 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 62.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,882 INFO L168 Benchmark]: TraceAbstraction took 5700.07 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 61.7 MB in the beginning and 57.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,882 INFO L168 Benchmark]: Witness Printer took 111.98 ms. Allocated memory is still 142.6 MB. Free memory was 57.3 MB in the beginning and 53.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:19,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 384.58 ms. Allocated memory is still 117.4 MB. Free memory was 86.1 MB in the beginning and 93.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.63 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.76 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 869.89 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 62.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5700.07 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 61.7 MB in the beginning and 57.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. * Witness Printer took 111.98 ms. Allocated memory is still 142.6 MB. Free memory was 57.3 MB in the beginning and 53.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((8640 <= s__state && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: blastFlag < 5 && 8672 <= s__state - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 374 SDtfs, 173 SDslu, 196 SDs, 0 SdLazy, 315 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 427 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 108 NumberOfFragments, 278 HoareAnnotationTreeSize, 18 FomulaSimplifications, 870 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 456 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 706 ConstructedInterpolants, 0 QuantifiedInterpolants, 67142 SizeOfPredicates, 4 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 779/933 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 correct! Received shutdown request...