./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.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_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c -s /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:34,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:34,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:35,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:35,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:35,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:35,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:35,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:35,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:35,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:35,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:35,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:35,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:35,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:35,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:35,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:35,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:35,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:35,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:35,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:35,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:35,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:35,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:35,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:35,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:35,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:35,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:35,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:35,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:35,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:35,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:35,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:35,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:35,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:35,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:35,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:35,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:35,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:35,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:35,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:35,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:35,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:35,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:35,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:35,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:35,186 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:35,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:35,186 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:35,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:35,187 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:35,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:35,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:35,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:35,188 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:35,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:35,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:35,189 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:35,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:35,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:35,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:35,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:35,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:35,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:35,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:35,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:35,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:35,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:35,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:35,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:35,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:35,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:35,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:35,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:35,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:35,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:35,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:35,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:35,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:35,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:35,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:35,196 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_061c4e40-3d07-4ea1-976e-40759b6eaa12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce [2020-11-22 13:05:35,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:35,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:35,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:35,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:35,544 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:35,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2020-11-22 13:05:35,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/data/48b9f0f21/93a5c43cfe2941c7a02a5aa700142e36/FLAGaf0805b16 [2020-11-22 13:05:36,199 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:36,199 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2020-11-22 13:05:36,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/data/48b9f0f21/93a5c43cfe2941c7a02a5aa700142e36/FLAGaf0805b16 [2020-11-22 13:05:36,488 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/data/48b9f0f21/93a5c43cfe2941c7a02a5aa700142e36 [2020-11-22 13:05:36,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:36,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:36,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:36,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:36,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:36,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:36" (1/1) ... [2020-11-22 13:05:36,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6ca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:36, skipping insertion in model container [2020-11-22 13:05:36,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:36" (1/1) ... [2020-11-22 13:05:36,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:36,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:36,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:36,953 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:37,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:37,094 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:37,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37 WrapperNode [2020-11-22 13:05:37,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:37,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:37,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:37,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:37,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:37,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:37,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:37,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:37,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... [2020-11-22 13:05:37,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:37,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:37,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:37,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:37,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 [2020-11-22 13:05:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:39,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:39,607 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:39,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39 BoogieIcfgContainer [2020-11-22 13:05:39,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:39,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:39,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:39,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:39,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:36" (1/3) ... [2020-11-22 13:05:39,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2d507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:39, skipping insertion in model container [2020-11-22 13:05:39,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:37" (2/3) ... [2020-11-22 13:05:39,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2d507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:39, skipping insertion in model container [2020-11-22 13:05:39,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39" (3/3) ... [2020-11-22 13:05:39,619 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-11-22 13:05:39,630 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:39,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:39,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:39,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:39,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:39,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:39,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:39,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:39,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:39,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:39,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 13:05:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 13:05:39,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:39,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:39,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash -216535792, now seen corresponding path program 1 times [2020-11-22 13:05:39,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:39,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551178676] [2020-11-22 13:05:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551178676] [2020-11-22 13:05:40,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:40,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:40,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085361584] [2020-11-22 13:05:40,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:40,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:40,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:40,152 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 13:05:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:40,694 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 13:05:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:40,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 13:05:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:40,717 INFO L225 Difference]: With dead ends: 251 [2020-11-22 13:05:40,717 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:05:40,720 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 [2020-11-22 13:05:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:05:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:05:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:05:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-22 13:05:40,795 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-22 13:05:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:40,797 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-22 13:05:40,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-22 13:05:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-22 13:05:40,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:40,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:40,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:40,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1992945981, now seen corresponding path program 1 times [2020-11-22 13:05:40,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:40,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421748424] [2020-11-22 13:05:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421748424] [2020-11-22 13:05:40,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:40,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:40,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874116854] [2020-11-22 13:05:40,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:40,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:40,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:40,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:40,922 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-22 13:05:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:41,451 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-22 13:05:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:41,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-22 13:05:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:41,455 INFO L225 Difference]: With dead ends: 485 [2020-11-22 13:05:41,455 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:05:41,456 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 [2020-11-22 13:05:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:05:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 13:05:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 13:05:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-22 13:05:41,488 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-22 13:05:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:41,489 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-22 13:05:41,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-22 13:05:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-22 13:05:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:41,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:41,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:41,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:41,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1654429666, now seen corresponding path program 1 times [2020-11-22 13:05:41,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:41,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909353371] [2020-11-22 13:05:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:41,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909353371] [2020-11-22 13:05:41,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777143173] [2020-11-22 13:05:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 [2020-11-22 13:05:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:41,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:41,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:05:41,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:05:41,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:41,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 13:05:41,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518780923] [2020-11-22 13:05:41,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:41,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:41,919 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-22 13:05:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:42,451 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-22 13:05:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:42,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-22 13:05:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:42,457 INFO L225 Difference]: With dead ends: 565 [2020-11-22 13:05:42,458 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 13:05:42,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 13:05:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-22 13:05:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 13:05:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-22 13:05:42,494 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-22 13:05:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:42,495 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-22 13:05:42,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-22 13:05:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 13:05:42,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:42,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:42,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:05:42,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:42,720 INFO L82 PathProgramCache]: Analyzing trace with hash -215847718, now seen corresponding path program 1 times [2020-11-22 13:05:42,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:42,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266076006] [2020-11-22 13:05:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:42,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266076006] [2020-11-22 13:05:42,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:42,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712035687] [2020-11-22 13:05:42,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:42,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:42,803 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-22 13:05:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:43,105 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-22 13:05:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:43,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 13:05:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:43,108 INFO L225 Difference]: With dead ends: 805 [2020-11-22 13:05:43,108 INFO L226 Difference]: Without dead ends: 403 [2020-11-22 13:05:43,109 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 [2020-11-22 13:05:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-22 13:05:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-22 13:05:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 13:05:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-22 13:05:43,129 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-22 13:05:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:43,129 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-22 13:05:43,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-22 13:05:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 13:05:43,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:43,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:43,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:43,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:43,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:43,139 INFO L82 PathProgramCache]: Analyzing trace with hash 441532700, now seen corresponding path program 1 times [2020-11-22 13:05:43,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:43,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606086935] [2020-11-22 13:05:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:05:43,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606086935] [2020-11-22 13:05:43,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:43,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:43,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468875205] [2020-11-22 13:05:43,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:43,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:43,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:43,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:43,234 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-22 13:05:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:43,725 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-22 13:05:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:43,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 13:05:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:43,730 INFO L225 Difference]: With dead ends: 885 [2020-11-22 13:05:43,730 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 13:05:43,731 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 [2020-11-22 13:05:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 13:05:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-22 13:05:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-22 13:05:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-22 13:05:43,753 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-22 13:05:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:43,754 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-22 13:05:43,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-22 13:05:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 13:05:43,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:43,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:43,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:05:43,756 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1831509676, now seen corresponding path program 1 times [2020-11-22 13:05:43,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:43,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493743360] [2020-11-22 13:05:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 13:05:43,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493743360] [2020-11-22 13:05:43,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852259970] [2020-11-22 13:05:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 [2020-11-22 13:05:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:43,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:43,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:05:44,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:05:44,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:44,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 13:05:44,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276694536] [2020-11-22 13:05:44,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:44,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:44,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:44,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:44,076 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-22 13:05:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:44,630 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-11-22 13:05:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:44,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-22 13:05:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:44,636 INFO L225 Difference]: With dead ends: 1365 [2020-11-22 13:05:44,636 INFO L226 Difference]: Without dead ends: 883 [2020-11-22 13:05:44,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-22 13:05:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-11-22 13:05:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-22 13:05:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-11-22 13:05:44,670 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-11-22 13:05:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:44,670 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-11-22 13:05:44,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-11-22 13:05:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-22 13:05:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:44,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:44,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:44,889 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash -834462968, now seen corresponding path program 1 times [2020-11-22 13:05:44,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:44,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462305279] [2020-11-22 13:05:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-22 13:05:45,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462305279] [2020-11-22 13:05:45,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:45,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:45,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679806246] [2020-11-22 13:05:45,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:45,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:45,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:45,005 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-11-22 13:05:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:45,949 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-11-22 13:05:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:05:45,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-11-22 13:05:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:45,959 INFO L225 Difference]: With dead ends: 1961 [2020-11-22 13:05:45,959 INFO L226 Difference]: Without dead ends: 993 [2020-11-22 13:05:45,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-11-22 13:05:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-11-22 13:05:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-22 13:05:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-11-22 13:05:45,989 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-11-22 13:05:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:45,990 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-11-22 13:05:45,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-11-22 13:05:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-22 13:05:45,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:45,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:45,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:05:45,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -788630574, now seen corresponding path program 1 times [2020-11-22 13:05:45,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:45,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30347291] [2020-11-22 13:05:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-22 13:05:46,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30347291] [2020-11-22 13:05:46,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233544490] [2020-11-22 13:05:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 [2020-11-22 13:05:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:46,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:05:46,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:05:46,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:46,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-22 13:05:46,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459755721] [2020-11-22 13:05:46,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:46,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:46,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:46,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:46,413 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 4 states. [2020-11-22 13:05:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:47,056 INFO L93 Difference]: Finished difference Result 2005 states and 2562 transitions. [2020-11-22 13:05:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:47,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-11-22 13:05:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:47,063 INFO L225 Difference]: With dead ends: 2005 [2020-11-22 13:05:47,063 INFO L226 Difference]: Without dead ends: 1203 [2020-11-22 13:05:47,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-22 13:05:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2020-11-22 13:05:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-22 13:05:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1350 transitions. [2020-11-22 13:05:47,091 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1350 transitions. Word has length 139 [2020-11-22 13:05:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:47,091 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1350 transitions. [2020-11-22 13:05:47,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1350 transitions. [2020-11-22 13:05:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-22 13:05:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:47,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:47,308 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -374614079, now seen corresponding path program 1 times [2020-11-22 13:05:47,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696577880] [2020-11-22 13:05:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696577880] [2020-11-22 13:05:47,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680751792] [2020-11-22 13:05:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/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 [2020-11-22 13:05:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:47,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 13:05:47,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 13:05:47,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:47,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:05:47,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492127556] [2020-11-22 13:05:47,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:47,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:47,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:47,952 INFO L87 Difference]: Start difference. First operand 1123 states and 1350 transitions. Second operand 3 states. [2020-11-22 13:05:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,346 INFO L93 Difference]: Finished difference Result 2643 states and 3124 transitions. [2020-11-22 13:05:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:48,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-11-22 13:05:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,347 INFO L225 Difference]: With dead ends: 2643 [2020-11-22 13:05:48,347 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:48,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:48,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-11-22 13:05:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,351 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:48,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:48,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:48,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:48,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:48,771 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 13:05:48,871 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 13:05:48,872 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 13:05:48,873 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L605(line 605) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 13:05:48,874 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 13:05:48,875 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 13:05:48,876 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 13:05:48,876 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 13:05:48,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:48 BoogieIcfgContainer [2020-11-22 13:05:48,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:48,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:48,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:48,893 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:48,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39" (3/4) ... [2020-11-22 13:05:48,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:48,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 13:05:48,919 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:05:48,921 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:05:48,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:05:49,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_061c4e40-3d07-4ea1-976e-40759b6eaa12/bin/utaipan/witness.graphml [2020-11-22 13:05:49,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:49,082 INFO L168 Benchmark]: Toolchain (without parser) took 12590.06 ms. Allocated memory was 119.5 MB in the beginning and 299.9 MB in the end (delta: 180.4 MB). Free memory was 89.3 MB in the beginning and 132.5 MB in the end (delta: -43.2 MB). Peak memory consumption was 137.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,083 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:49,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.73 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 81.7 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.46 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 75.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,084 INFO L168 Benchmark]: Boogie Preprocessor took 103.48 ms. Allocated memory is still 119.5 MB. Free memory was 75.9 MB in the beginning and 71.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,084 INFO L168 Benchmark]: RCFGBuilder took 2311.15 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 71.7 MB in the beginning and 95.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,085 INFO L168 Benchmark]: TraceAbstraction took 9280.78 ms. Allocated memory was 157.3 MB in the beginning and 299.9 MB in the end (delta: 142.6 MB). Free memory was 94.6 MB in the beginning and 148.2 MB in the end (delta: -53.6 MB). Peak memory consumption was 90.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,085 INFO L168 Benchmark]: Witness Printer took 188.55 ms. Allocated memory is still 299.9 MB. Free memory was 148.2 MB in the beginning and 132.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.73 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 81.7 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.46 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 75.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.48 ms. Allocated memory is still 119.5 MB. Free memory was 75.9 MB in the beginning and 71.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2311.15 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 71.7 MB in the beginning and 95.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9280.78 ms. Allocated memory was 157.3 MB in the beginning and 299.9 MB in the end (delta: 142.6 MB). Free memory was 94.6 MB in the beginning and 148.2 MB in the end (delta: -53.6 MB). Peak memory consumption was 90.1 MB. Max. memory is 16.1 GB. * Witness Printer took 188.55 ms. Allocated memory is still 299.9 MB. Free memory was 148.2 MB in the beginning and 132.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 841 SDslu, 73 SDs, 0 SdLazy, 2220 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 1072 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred 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, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 155 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1986 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1579 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2101 ConstructedInterpolants, 0 QuantifiedInterpolants, 831203 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1415 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1033/1105 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...