./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:24,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:24,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:24,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:24,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:24,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:24,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:24,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:24,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:24,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:24,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:24,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:24,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:24,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:24,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:24,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:24,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:24,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:24,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:24,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:24,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:24,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:24,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:24,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:24,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:24,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:24,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:24,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:24,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:24,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:24,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:24,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:24,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:24,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:24,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:24,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:24,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:24,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:24,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:24,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:24,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:24,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:24,165 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:24,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:24,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:24,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:24,167 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:24,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:24,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:24,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:24,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:24,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:24,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:24,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:24,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:24,172 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:24,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:24,172 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:24,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:24,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:24,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:24,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:24,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:24,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:24,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:24,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:24,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:24,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:24,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:24,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:24,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-10-22 08:55:24,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:24,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:24,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:24,236 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:24,236 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:24,237 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-10-22 08:55:24,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/data/737c1896f/d0910caf64cb44b5a1c635c87e729166/FLAGe09f3f957 [2019-10-22 08:55:24,650 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:24,651 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/sv-benchmarks/c/bitvector/gcd_4.c [2019-10-22 08:55:24,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/data/737c1896f/d0910caf64cb44b5a1c635c87e729166/FLAGe09f3f957 [2019-10-22 08:55:24,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/data/737c1896f/d0910caf64cb44b5a1c635c87e729166 [2019-10-22 08:55:24,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:24,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:24,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:24,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:24,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:24,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:24,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c87219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24, skipping insertion in model container [2019-10-22 08:55:24,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:24,689 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:24,704 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:24,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:24,865 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:24,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:24,982 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:24,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24 WrapperNode [2019-10-22 08:55:24,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:24,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:24,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:24,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:24,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:24,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:25,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:25,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:25,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:25,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... [2019-10-22 08:55:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:25,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:25,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:25,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:25,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/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 [2019-10-22 08:55:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:25,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:25,230 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:25,230 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-10-22 08:55:25,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:25 BoogieIcfgContainer [2019-10-22 08:55:25,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:25,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:25,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:25,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:25,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:24" (1/3) ... [2019-10-22 08:55:25,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511a6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:25, skipping insertion in model container [2019-10-22 08:55:25,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:24" (2/3) ... [2019-10-22 08:55:25,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511a6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:25, skipping insertion in model container [2019-10-22 08:55:25,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:25" (3/3) ... [2019-10-22 08:55:25,238 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-10-22 08:55:25,259 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:25,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:55:25,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:55:25,329 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:25,335 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:25,335 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:25,335 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:25,336 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:25,336 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:25,336 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:25,336 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-22 08:55:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:55:25,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,365 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:25,368 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1540385985, now seen corresponding path program 1 times [2019-10-22 08:55:25,396 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865675869] [2019-10-22 08:55:25,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865675869] [2019-10-22 08:55:25,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:25,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208490319] [2019-10-22 08:55:25,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:25,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:25,564 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-22 08:55:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,598 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2019-10-22 08:55:25,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:25,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 08:55:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,610 INFO L225 Difference]: With dead ends: 63 [2019-10-22 08:55:25,610 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:55:25,613 INFO L600 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 [2019-10-22 08:55:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:55:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2019-10-22 08:55:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:55:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 08:55:25,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2019-10-22 08:55:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,644 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 08:55:25,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 08:55:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:55:25,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,645 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:25,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash 687615503, now seen corresponding path program 1 times [2019-10-22 08:55:25,646 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208175031] [2019-10-22 08:55:25,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208175031] [2019-10-22 08:55:25,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:25,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676846097] [2019-10-22 08:55:25,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:25,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:25,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:25,668 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-22 08:55:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,686 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-10-22 08:55:25,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:25,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 08:55:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,688 INFO L225 Difference]: With dead ends: 37 [2019-10-22 08:55:25,688 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 08:55:25,689 INFO L600 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 [2019-10-22 08:55:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 08:55:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 08:55:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 08:55:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-22 08:55:25,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2019-10-22 08:55:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,693 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-22 08:55:25,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-22 08:55:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:25,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,694 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:25,694 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1672373068, now seen corresponding path program 1 times [2019-10-22 08:55:25,695 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703157370] [2019-10-22 08:55:25,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703157370] [2019-10-22 08:55:25,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:25,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100692289] [2019-10-22 08:55:25,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:25,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:25,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:25,736 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-10-22 08:55:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,760 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-10-22 08:55:25,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:25,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-22 08:55:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,761 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:55:25,761 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 08:55:25,761 INFO L600 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 [2019-10-22 08:55:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 08:55:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 08:55:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 08:55:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-22 08:55:25,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2019-10-22 08:55:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,765 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-22 08:55:25,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-22 08:55:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:55:25,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,766 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:25,766 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1034091127, now seen corresponding path program 1 times [2019-10-22 08:55:25,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006401543] [2019-10-22 08:55:25,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,775 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:25,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722996695] [2019-10-22 08:55:25,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/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 [2019-10-22 08:55:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:55:25,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:25,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006401543] [2019-10-22 08:55:25,888 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:25,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722996695] [2019-10-22 08:55:25,889 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:25,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-10-22 08:55:25,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217537873] [2019-10-22 08:55:25,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:25,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:25,890 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-10-22 08:55:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:25,936 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-10-22 08:55:25,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:25,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 08:55:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:25,937 INFO L225 Difference]: With dead ends: 40 [2019-10-22 08:55:25,938 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 08:55:25,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 08:55:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-22 08:55:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 08:55:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-22 08:55:25,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2019-10-22 08:55:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:25,942 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-22 08:55:25,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-22 08:55:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:55:25,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,943 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:26,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:26,144 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 803998854, now seen corresponding path program 2 times [2019-10-22 08:55:26,144 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:26,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856914658] [2019-10-22 08:55:26,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:26,154 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:26,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780720516] [2019-10-22 08:55:26,154 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/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 [2019-10-22 08:55:26,177 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:55:26,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:26,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:55:26,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:26,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856914658] [2019-10-22 08:55:26,260 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:26,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780720516] [2019-10-22 08:55:26,260 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:26,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-22 08:55:26,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774750434] [2019-10-22 08:55:26,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:26,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:26,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:26,262 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2019-10-22 08:55:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:26,332 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-22 08:55:26,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:26,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 08:55:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:26,333 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:55:26,333 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 08:55:26,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 08:55:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-22 08:55:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 08:55:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-22 08:55:26,337 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 15 [2019-10-22 08:55:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:26,337 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-22 08:55:26,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-22 08:55:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:55:26,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:26,338 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:26,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:26,539 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1976911939, now seen corresponding path program 3 times [2019-10-22 08:55:26,540 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:26,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215030810] [2019-10-22 08:55:26,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:26,550 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:26,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099049052] [2019-10-22 08:55:26,551 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/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 [2019-10-22 08:55:26,586 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-22 08:55:26,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:26,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:55:26,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:26,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215030810] [2019-10-22 08:55:26,655 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:26,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099049052] [2019-10-22 08:55:26,656 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:26,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-22 08:55:26,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318369150] [2019-10-22 08:55:26,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:26,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:26,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:26,657 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2019-10-22 08:55:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:26,702 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-10-22 08:55:26,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:26,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:55:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:26,703 INFO L225 Difference]: With dead ends: 46 [2019-10-22 08:55:26,703 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:55:26,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:55:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:55:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:55:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-22 08:55:26,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2019-10-22 08:55:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:26,707 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-22 08:55:26,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-22 08:55:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:55:26,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:26,708 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:26,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:26,916 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1239358850, now seen corresponding path program 4 times [2019-10-22 08:55:26,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:26,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426594304] [2019-10-22 08:55:26,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:26,924 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:26,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908323336] [2019-10-22 08:55:26,924 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/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 [2019-10-22 08:55:26,953 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:55:26,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:26,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-22 08:55:26,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-22 08:55:27,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426594304] [2019-10-22 08:55:27,034 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:27,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908323336] [2019-10-22 08:55:27,034 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:27,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-22 08:55:27,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28945457] [2019-10-22 08:55:27,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:27,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:27,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:27,037 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 8 states. [2019-10-22 08:55:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:27,185 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-10-22 08:55:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:27,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:55:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:27,188 INFO L225 Difference]: With dead ends: 46 [2019-10-22 08:55:27,188 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 08:55:27,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 08:55:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2019-10-22 08:55:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:55:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-22 08:55:27,196 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2019-10-22 08:55:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:27,196 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-22 08:55:27,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-22 08:55:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:27,197 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:27,197 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:27,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:27,400 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1317757439, now seen corresponding path program 1 times [2019-10-22 08:55:27,401 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:27,401 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128776789] [2019-10-22 08:55:27,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:27,406 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:27,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360148669] [2019-10-22 08:55:27,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:27,432 WARN L254 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-22 08:55:27,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:55:27,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128776789] [2019-10-22 08:55:27,600 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:27,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360148669] [2019-10-22 08:55:27,600 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:27,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-10-22 08:55:27,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096844863] [2019-10-22 08:55:27,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:55:27,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:55:27,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:55:27,602 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2019-10-22 08:55:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:27,768 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2019-10-22 08:55:27,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:27,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-10-22 08:55:27,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:27,769 INFO L225 Difference]: With dead ends: 50 [2019-10-22 08:55:27,769 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:55:27,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:55:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-22 08:55:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:55:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-22 08:55:27,775 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-10-22 08:55:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:27,775 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-22 08:55:27,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:55:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-22 08:55:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:27,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:27,776 INFO L380 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:27,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:27,977 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 243607739, now seen corresponding path program 5 times [2019-10-22 08:55:27,977 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:27,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293497328] [2019-10-22 08:55:27,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:27,991 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:27,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765118241] [2019-10-22 08:55:27,991 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:28,020 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-10-22 08:55:28,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:28,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:55:28,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-22 08:55:28,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293497328] [2019-10-22 08:55:28,034 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:28,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765118241] [2019-10-22 08:55:28,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:28,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:28,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885475010] [2019-10-22 08:55:28,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:28,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:28,036 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2019-10-22 08:55:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:28,046 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-10-22 08:55:28,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:28,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-22 08:55:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:28,047 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:55:28,047 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:55:28,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:55:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-10-22 08:55:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:55:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-10-22 08:55:28,054 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2019-10-22 08:55:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:28,054 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-10-22 08:55:28,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-10-22 08:55:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:28,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:28,055 INFO L380 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:28,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:28,256 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1110212667, now seen corresponding path program 6 times [2019-10-22 08:55:28,257 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:28,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49174810] [2019-10-22 08:55:28,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:28,270 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:28,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284827172] [2019-10-22 08:55:28,273 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:28,306 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-10-22 08:55:28,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:28,307 WARN L254 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-22 08:55:28,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:55:28,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49174810] [2019-10-22 08:55:28,410 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:28,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284827172] [2019-10-22 08:55:28,410 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:55:28,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-10-22 08:55:28,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591873033] [2019-10-22 08:55:28,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:55:28,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:55:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:28,412 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2019-10-22 08:55:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:28,533 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-22 08:55:28,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:28,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-10-22 08:55:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:28,533 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:55:28,533 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:28,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:55:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:28,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-22 08:55:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:28,535 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:28,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:55:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:28,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:28,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:28,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:28,951 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2019-10-22 08:55:28,968 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-10-22 08:55:28,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:28,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:28,968 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-10-22 08:55:28,968 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_gcd_test_~b 18)) (.cse3 (= ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~x~0 63)) (.cse2 (= ULTIMATE.start_main_~y~0 18)) (.cse4 (= 72 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_gcd_test_~a)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ (* 3 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse2 .cse0 .cse1 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0)) (and .cse3 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse3 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a))) (and (= (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0 ULTIMATE.start_gcd_test_~a) 72) .cse1 .cse2 .cse4) (and .cse1 (= (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0) 72) .cse2 .cse4))) [2019-10-22 08:55:28,969 INFO L446 ceAbstractionStarter]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 11 27) no Hoare annotation was computed. [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-22 08:55:28,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,970 INFO L439 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= 63 (+ ULTIMATE.start_main_~g~0 .cse0)) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-10-22 08:55:28,970 INFO L443 ceAbstractionStarter]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-10-22 08:55:28,970 INFO L439 ceAbstractionStarter]: At program point L5-5(lines 4 9) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= 63 (+ ULTIMATE.start_main_~g~0 .cse0)) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-10-22 08:55:28,970 INFO L443 ceAbstractionStarter]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-10-22 08:55:28,970 INFO L446 ceAbstractionStarter]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-10-22 08:55:28,970 INFO L439 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= ULTIMATE.start_main_~y~0 18) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-10-22 08:55:28,970 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,970 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,970 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,971 INFO L443 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-10-22 08:55:28,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:28 BoogieIcfgContainer [2019-10-22 08:55:28,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:28,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:28,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:28,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:28,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:25" (3/4) ... [2019-10-22 08:55:28,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:29,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 08:55:29,001 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:29,025 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == 3 * y + a && x == 63) && y == 18) && \result + 3 * y == x [2019-10-22 08:55:29,025 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x [2019-10-22 08:55:29,025 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x [2019-10-22 08:55:29,042 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_59cc7cf2-7e7f-40c9-bb8d-f3655794cd3c/bin/uautomizer/witness.graphml [2019-10-22 08:55:29,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:29,044 INFO L168 Benchmark]: Toolchain (without parser) took 4375.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 157.2 kB. Max. memory is 11.5 GB. [2019-10-22 08:55:29,045 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:29,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -208.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:29,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:29,046 INFO L168 Benchmark]: Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:29,046 INFO L168 Benchmark]: RCFGBuilder took 205.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:29,046 INFO L168 Benchmark]: TraceAbstraction took 3754.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:29,047 INFO L168 Benchmark]: Witness Printer took 55.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:29,049 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -208.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 205.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3754.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((x == 3 * y + a && x == 63) && y == 18) && \result + 3 * y == x - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((b == 18 && x == 63) && y == 18) && x == 3 * b + a) || (((y == 18 && b == 18) && x == 63) && a == x)) || (((b == y && x == 63) && y == 18) && x == 2 * b + a)) || (((b == y && x == 63) && y == 18) && x == b + a)) || (((b + x + a == 72 && x == 63) && y == 18) && 72 == x + a)) || (((x == 63 && b + x == 72) && y == 18) && 72 == x + a) - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 133 SDtfs, 91 SDslu, 267 SDs, 0 SdLazy, 467 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 20 NumberOfFragments, 183 HoareAnnotationTreeSize, 6 FomulaSimplifications, 157 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 154 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 144 ConstructedInterpolants, 2 QuantifiedInterpolants, 16350 SizeOfPredicates, 50 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 67/152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...