./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 0.1.25-f470102 [2019-12-07 15:21:05,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:21:05,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:21:05,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:21:05,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:21:05,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:21:05,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:21:05,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:21:05,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:21:05,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:21:05,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:21:05,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:21:05,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:21:05,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:21:05,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:21:05,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:21:05,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:21:05,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:21:05,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:21:05,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:21:05,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:21:05,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:21:05,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:21:05,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:21:05,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:21:05,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:21:05,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:21:05,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:21:05,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:21:05,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:21:05,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:21:05,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:21:05,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:21:05,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:21:05,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:21:05,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:21:05,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:21:05,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:21:05,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:21:05,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:21:05,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:21:05,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:21:05,892 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:21:05,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:21:05,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:21:05,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:21:05,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:21:05,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:21:05,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:21:05,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:21:05,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:21:05,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:21:05,896 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/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:05,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:21:06,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:21:06,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:21:06,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:21:06,012 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:21:06,013 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-12-07 15:21:06,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/data/bf3bb6e1c/8e37c65a04284b11bc4338f5d1d94a5d/FLAG56f2171a1 [2019-12-07 15:21:06,507 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:21:06,508 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/sv-benchmarks/c/bitvector/gcd_4.c [2019-12-07 15:21:06,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/data/bf3bb6e1c/8e37c65a04284b11bc4338f5d1d94a5d/FLAG56f2171a1 [2019-12-07 15:21:06,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/data/bf3bb6e1c/8e37c65a04284b11bc4338f5d1d94a5d [2019-12-07 15:21:06,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:21:06,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:21:06,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:21:06,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:21:06,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:21:06,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e36ea05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06, skipping insertion in model container [2019-12-07 15:21:06,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:21:06,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:21:06,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:21:06,654 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:21:06,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:21:06,703 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:21:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06 WrapperNode [2019-12-07 15:21:06,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:21:06,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:21:06,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:21:06,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:21:06,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:21:06,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:21:06,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:21:06,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:21:06,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... [2019-12-07 15:21:06,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:21:06,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:21:06,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:21:06,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:21:06,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:21:06,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:21:06,888 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:21:06,888 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 15:21:06,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:06 BoogieIcfgContainer [2019-12-07 15:21:06,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:21:06,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:21:06,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:21:06,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:21:06,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:21:06" (1/3) ... [2019-12-07 15:21:06,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5dd304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:21:06, skipping insertion in model container [2019-12-07 15:21:06,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:06" (2/3) ... [2019-12-07 15:21:06,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5dd304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:21:06, skipping insertion in model container [2019-12-07 15:21:06,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:06" (3/3) ... [2019-12-07 15:21:06,893 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-12-07 15:21:06,900 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:21:06,904 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:21:06,911 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:21:06,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:21:06,926 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:21:06,926 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:21:06,926 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:21:06,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:21:06,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:21:06,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:21:06,926 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:21:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 15:21:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:21:06,939 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:06,939 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:06,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:06,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1540385985, now seen corresponding path program 1 times [2019-12-07 15:21:06,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:06,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401754113] [2019-12-07 15:21:06,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401754113] [2019-12-07 15:21:07,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:07,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:21:07,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430466142] [2019-12-07 15:21:07,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:07,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:07,055 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-12-07 15:21:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,082 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2019-12-07 15:21:07,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:07,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 15:21:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,089 INFO L225 Difference]: With dead ends: 63 [2019-12-07 15:21:07,089 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 15:21:07,091 INFO L630 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 [2019-12-07 15:21:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 15:21:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2019-12-07 15:21:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 15:21:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-12-07 15:21:07,113 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2019-12-07 15:21:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,114 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-12-07 15:21:07,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-12-07 15:21:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:21:07,114 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:07,114 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:07,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash 687615503, now seen corresponding path program 1 times [2019-12-07 15:21:07,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:07,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629285270] [2019-12-07 15:21:07,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629285270] [2019-12-07 15:21:07,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:07,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:21:07,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056576411] [2019-12-07 15:21:07,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:07,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:07,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:07,132 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-12-07 15:21:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,144 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-12-07 15:21:07,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:07,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 15:21:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,145 INFO L225 Difference]: With dead ends: 37 [2019-12-07 15:21:07,145 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 15:21:07,146 INFO L630 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 [2019-12-07 15:21:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 15:21:07,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 15:21:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:21:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-12-07 15:21:07,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2019-12-07 15:21:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,150 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-12-07 15:21:07,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-12-07 15:21:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:21:07,150 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,150 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:07,150 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:07,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:07,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1672373068, now seen corresponding path program 1 times [2019-12-07 15:21:07,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:07,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590474594] [2019-12-07 15:21:07,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590474594] [2019-12-07 15:21:07,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:07,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:21:07,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620441084] [2019-12-07 15:21:07,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:07,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:07,173 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-12-07 15:21:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,188 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-12-07 15:21:07,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:07,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 15:21:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,189 INFO L225 Difference]: With dead ends: 38 [2019-12-07 15:21:07,189 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:21:07,190 INFO L630 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 [2019-12-07 15:21:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:21:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 15:21:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 15:21:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-12-07 15:21:07,193 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2019-12-07 15:21:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,193 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-12-07 15:21:07,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-12-07 15:21:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 15:21:07,193 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,194 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:07,194 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1034091127, now seen corresponding path program 1 times [2019-12-07 15:21:07,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:07,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454151491] [2019-12-07 15:21:07,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,200 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:07,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550104004] [2019-12-07 15:21:07,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:07,225 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:21:07,228 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454151491] [2019-12-07 15:21:07,264 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:07,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550104004] [2019-12-07 15:21:07,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:07,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-12-07 15:21:07,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269051452] [2019-12-07 15:21:07,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:21:07,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:21:07,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:21:07,266 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-12-07 15:21:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,296 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 15:21:07,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:21:07,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 15:21:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,297 INFO L225 Difference]: With dead ends: 40 [2019-12-07 15:21:07,297 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:21:07,297 INFO L630 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 [2019-12-07 15:21:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:21:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:21:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:21:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-12-07 15:21:07,301 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2019-12-07 15:21:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,301 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-12-07 15:21:07,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:21:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-12-07 15:21:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:21:07,301 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,301 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:07,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:07,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash 803998854, now seen corresponding path program 2 times [2019-12-07 15:21:07,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:07,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626014031] [2019-12-07 15:21:07,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,522 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:07,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35856549] [2019-12-07 15:21:07,524 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:07,563 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:21:07,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:21:07,564 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:21:07,565 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626014031] [2019-12-07 15:21:07,603 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:07,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35856549] [2019-12-07 15:21:07,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:07,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 15:21:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421694336] [2019-12-07 15:21:07,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:21:07,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:21:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:21:07,605 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2019-12-07 15:21:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,651 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-12-07 15:21:07,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:21:07,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-12-07 15:21:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,652 INFO L225 Difference]: With dead ends: 42 [2019-12-07 15:21:07,652 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 15:21:07,652 INFO L630 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 [2019-12-07 15:21:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 15:21:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 15:21:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:21:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-12-07 15:21:07,657 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 15 [2019-12-07 15:21:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,657 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-12-07 15:21:07,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:21:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-12-07 15:21:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:21:07,658 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,658 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:07,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:07,859 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1976911939, now seen corresponding path program 3 times [2019-12-07 15:21:07,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:07,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823168163] [2019-12-07 15:21:07,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:07,882 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:07,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20451361] [2019-12-07 15:21:07,883 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:07,923 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 15:21:07,923 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:21:07,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:21:07,925 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:07,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823168163] [2019-12-07 15:21:07,958 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:07,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20451361] [2019-12-07 15:21:07,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:07,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-12-07 15:21:07,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048690347] [2019-12-07 15:21:07,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:21:07,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:21:07,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:21:07,960 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2019-12-07 15:21:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:07,989 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-12-07 15:21:07,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:21:07,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-07 15:21:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:07,990 INFO L225 Difference]: With dead ends: 46 [2019-12-07 15:21:07,991 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:21:07,991 INFO L630 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 [2019-12-07 15:21:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:21:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:21:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:21:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-12-07 15:21:07,994 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2019-12-07 15:21:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:07,994 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-12-07 15:21:07,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:21:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-12-07 15:21:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:21:07,995 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:07,995 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:08,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:08,196 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1239358850, now seen corresponding path program 4 times [2019-12-07 15:21:08,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:08,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241771532] [2019-12-07 15:21:08,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:08,204 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:08,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128826881] [2019-12-07 15:21:08,205 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:08,254 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:21:08,254 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:21:08,256 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:21:08,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 15:21:08,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241771532] [2019-12-07 15:21:08,318 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:08,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128826881] [2019-12-07 15:21:08,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:08,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-12-07 15:21:08,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336808870] [2019-12-07 15:21:08,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:21:08,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:08,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:21:08,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:21:08,320 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 8 states. [2019-12-07 15:21:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:08,411 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-12-07 15:21:08,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:21:08,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 15:21:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:08,413 INFO L225 Difference]: With dead ends: 46 [2019-12-07 15:21:08,413 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 15:21:08,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:21:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 15:21:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2019-12-07 15:21:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 15:21:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-12-07 15:21:08,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2019-12-07 15:21:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:08,418 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-12-07 15:21:08,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:21:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-12-07 15:21:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 15:21:08,419 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:08,419 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:08,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:08,620 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:08,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1317757439, now seen corresponding path program 1 times [2019-12-07 15:21:08,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:08,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014038702] [2019-12-07 15:21:08,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:08,638 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:08,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365338670] [2019-12-07 15:21:08,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:08,682 WARN L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 15:21:08,683 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 15:21:08,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014038702] [2019-12-07 15:21:08,778 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:08,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365338670] [2019-12-07 15:21:08,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:08,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-12-07 15:21:08,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940605750] [2019-12-07 15:21:08,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:21:08,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:08,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:21:08,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:21:08,779 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2019-12-07 15:21:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:08,890 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2019-12-07 15:21:08,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:21:08,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-12-07 15:21:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:08,891 INFO L225 Difference]: With dead ends: 50 [2019-12-07 15:21:08,891 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 15:21:08,892 INFO L630 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 [2019-12-07 15:21:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 15:21:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-12-07 15:21:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:21:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 15:21:08,896 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-12-07 15:21:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:08,896 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 15:21:08,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:21:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 15:21:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 15:21:08,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:08,897 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:09,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:09,098 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 243607739, now seen corresponding path program 5 times [2019-12-07 15:21:09,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:09,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603577449] [2019-12-07 15:21:09,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:09,119 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:09,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362205273] [2019-12-07 15:21:09,120 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:09,208 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-07 15:21:09,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:21:09,211 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:21:09,213 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-12-07 15:21:09,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603577449] [2019-12-07 15:21:09,231 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:09,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362205273] [2019-12-07 15:21:09,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:09,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:21:09,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295609488] [2019-12-07 15:21:09,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:09,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:09,236 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2019-12-07 15:21:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:09,261 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-12-07 15:21:09,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:09,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-12-07 15:21:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:09,264 INFO L225 Difference]: With dead ends: 47 [2019-12-07 15:21:09,264 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 15:21:09,265 INFO L630 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 [2019-12-07 15:21:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 15:21:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-12-07 15:21:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 15:21:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-12-07 15:21:09,271 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2019-12-07 15:21:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:09,271 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-12-07 15:21:09,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-12-07 15:21:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 15:21:09,272 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:09,272 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:09,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:09,474 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1110212667, now seen corresponding path program 6 times [2019-12-07 15:21:09,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:09,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881698558] [2019-12-07 15:21:09,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:09,486 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:21:09,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375839039] [2019-12-07 15:21:09,486 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/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 [2019-12-07 15:21:09,507 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-12-07 15:21:09,507 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:21:09,508 WARN L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-07 15:21:09,509 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:21:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:21:09,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881698558] [2019-12-07 15:21:09,584 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:21:09,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375839039] [2019-12-07 15:21:09,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:21:09,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-12-07 15:21:09,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796911409] [2019-12-07 15:21:09,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 15:21:09,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:09,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 15:21:09,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:21:09,586 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2019-12-07 15:21:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:09,667 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-12-07 15:21:09,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:21:09,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-12-07 15:21:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:09,667 INFO L225 Difference]: With dead ends: 33 [2019-12-07 15:21:09,667 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:21:09,668 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:21:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:21:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:21:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:21:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:21:09,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-12-07 15:21:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:09,668 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:21:09,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 15:21:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:21:09,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:21:09,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:21:09,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:21:10,045 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,055 INFO L246 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L242 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_gcd_test_~a))) (.cse5 (= ULTIMATE.start_gcd_test_~b 18)) (.cse2 (= ULTIMATE.start_main_~x~0 63)) (.cse3 (= ULTIMATE.start_main_~y~0 18))) (or (let ((.cse0 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and (<= .cse0 63) (<= 63 .cse0) .cse1 .cse2 .cse3)) (and .cse4 (= 72 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0 ULTIMATE.start_gcd_test_~a)) .cse2 .cse3) (and .cse4 .cse2 .cse3 (= 72 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0))) (and .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a))) (and .cse5 .cse2 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0) .cse3) (and .cse4 .cse5 .cse2 .cse3))) [2019-12-07 15:21:10,056 INFO L249 CegarLoopResult]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L12-2(lines 11 27) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L242 CegarLoopResult]: 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))) [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L242 CegarLoopResult]: 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))) [2019-12-07 15:21:10,056 INFO L246 CegarLoopResult]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-12-07 15:21:10,056 INFO L249 CegarLoopResult]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-12-07 15:21:10,056 INFO L242 CegarLoopResult]: At program point L26(lines 10 27) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 3))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 (+ |ULTIMATE.start_gcd_test_#res| .cse0)) (= ULTIMATE.start_main_~x~0 63) (= ULTIMATE.start_main_~y~0 18))) [2019-12-07 15:21:10,057 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,057 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,057 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,057 INFO L246 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-12-07 15:21:10,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:21:10 BoogieIcfgContainer [2019-12-07 15:21:10,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:21:10,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:21:10,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:21:10,071 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:21:10,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:06" (3/4) ... [2019-12-07 15:21:10,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:21:10,081 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 15:21:10,081 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:21:10,098 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == y * 3 + a && x == \result + y * 3) && x == 63) && y == 18 [2019-12-07 15:21:10,098 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 [2019-12-07 15:21:10,099 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 [2019-12-07 15:21:10,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fefd626b-5318-45cb-af6f-3e9a3d043b39/bin/uautomizer/witness.graphml [2019-12-07 15:21:10,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:21:10,116 INFO L168 Benchmark]: Toolchain (without parser) took 3591.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 778.4 kB. Max. memory is 11.5 GB. [2019-12-07 15:21:10,116 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:21:10,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:10,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:21:10,117 INFO L168 Benchmark]: Boogie Preprocessor took 12.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:21:10,117 INFO L168 Benchmark]: RCFGBuilder took 150.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:10,118 INFO L168 Benchmark]: TraceAbstraction took 3181.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:10,118 INFO L168 Benchmark]: Witness Printer took 43.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:10,119 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 150.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3181.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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 == y * 3 + a && x == \result + y * 3) && x == 63) && y == 18 - 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: ((((((((2 * b + a <= 63 && 63 <= 2 * b + a) && b == y) && x == 63) && y == 18) || (((x == y * 3 + a && 72 == b + x + a) && x == 63) && y == 18)) || (((x == y * 3 + a && x == 63) && y == 18) && 72 == b + x)) || (((b == y && x == 63) && y == 18) && x == b + a)) || (((b == 18 && x == 63) && a == x) && y == 18)) || (((x == y * 3 + a && b == 18) && x == 63) && y == 18) - 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: 2.9s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 133 SDtfs, 91 SDslu, 267 SDs, 0 SdLazy, 467 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s 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, 194 HoareAnnotationTreeSize, 6 FomulaSimplifications, 159 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 115 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s 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...