./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/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 0497b69437c9ebb889888bdb31aaefcc8eaad029 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:57:38,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:38,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:38,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:38,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:38,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:38,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:38,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:38,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:38,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:38,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:38,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:38,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:38,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:38,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:38,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:38,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:38,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:38,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:38,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:38,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:38,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:38,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:38,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:38,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:38,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:38,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:38,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:38,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:38,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:38,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:38,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:38,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:38,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:38,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:38,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:38,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:38,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:38,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:38,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:38,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:38,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:57:38,312 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:38,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:38,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:38,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:38,323 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:38,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:38,324 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:57:38,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:38,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:57:38,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:38,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:57:38,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:57:38,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:57:38,325 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:57:38,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:38,325 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:38,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:57:38,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:38,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:38,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:57:38,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:57:38,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:57:38,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:38,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:57:38,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:57:38,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:38,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:57:38,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:57:38,329 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_259dc41c-f296-492e-b1c6-31bae05e8157/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 -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2019-11-25 08:57:38,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:38,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:38,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:38,509 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:38,509 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:38,510 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd01-1.c [2019-11-25 08:57:38,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/data/fb8a22840/618cbdf5639447eea0854d494dce0277/FLAG8b9d225b9 [2019-11-25 08:57:38,933 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:38,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/sv-benchmarks/c/recursive/gcd01-1.c [2019-11-25 08:57:38,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/data/fb8a22840/618cbdf5639447eea0854d494dce0277/FLAG8b9d225b9 [2019-11-25 08:57:39,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/data/fb8a22840/618cbdf5639447eea0854d494dce0277 [2019-11-25 08:57:39,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:39,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:39,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:39,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:39,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:39,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54728782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39, skipping insertion in model container [2019-11-25 08:57:39,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:39,405 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:39,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:39,600 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:39,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:39,695 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:39,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39 WrapperNode [2019-11-25 08:57:39,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:39,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:39,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:39,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:39,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:39,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:39,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:39,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:39,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... [2019-11-25 08:57:39,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:39,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:39,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:39,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:39,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/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 [2019-11-25 08:57:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-11-25 08:57:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-11-25 08:57:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:40,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:40,047 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:57:40,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:40 BoogieIcfgContainer [2019-11-25 08:57:40,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:40,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:57:40,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:57:40,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:57:40,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:57:39" (1/3) ... [2019-11-25 08:57:40,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551e4540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:40, skipping insertion in model container [2019-11-25 08:57:40,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:39" (2/3) ... [2019-11-25 08:57:40,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551e4540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:40, skipping insertion in model container [2019-11-25 08:57:40,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:40" (3/3) ... [2019-11-25 08:57:40,059 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2019-11-25 08:57:40,067 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:57:40,072 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:57:40,084 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:57:40,109 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:57:40,109 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:57:40,110 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:57:40,110 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:40,110 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:40,111 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:57:40,111 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:40,111 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:57:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-25 08:57:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:57:40,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:40,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:40,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:40,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:40,141 INFO L82 PathProgramCache]: Analyzing trace with hash -540428153, now seen corresponding path program 1 times [2019-11-25 08:57:40,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:40,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107854217] [2019-11-25 08:57:40,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:40,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107854217] [2019-11-25 08:57:40,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:40,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:57:40,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198153328] [2019-11-25 08:57:40,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:57:40,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:40,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:57:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:40,373 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2019-11-25 08:57:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:40,491 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-11-25 08:57:40,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:57:40,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:57:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:40,501 INFO L225 Difference]: With dead ends: 36 [2019-11-25 08:57:40,501 INFO L226 Difference]: Without dead ends: 20 [2019-11-25 08:57:40,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-25 08:57:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-25 08:57:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:57:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-25 08:57:40,540 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-11-25 08:57:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:40,540 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-25 08:57:40,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:57:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-25 08:57:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:57:40,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:40,542 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:40,542 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash 999682999, now seen corresponding path program 1 times [2019-11-25 08:57:40,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:40,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384359733] [2019-11-25 08:57:40,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:40,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384359733] [2019-11-25 08:57:40,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:40,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:57:40,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036093116] [2019-11-25 08:57:40,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:57:40,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:40,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:57:40,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:40,628 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2019-11-25 08:57:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:40,821 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-25 08:57:40,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:57:40,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-25 08:57:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:40,824 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:57:40,824 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:57:40,825 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:57:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-25 08:57:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:57:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-25 08:57:40,832 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2019-11-25 08:57:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:40,832 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-25 08:57:40,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:57:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-25 08:57:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:57:40,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:40,836 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:40,836 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1243478463, now seen corresponding path program 1 times [2019-11-25 08:57:40,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:40,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111451392] [2019-11-25 08:57:40,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:57:40,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111451392] [2019-11-25 08:57:40,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:40,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:57:40,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119644478] [2019-11-25 08:57:40,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:57:40,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:57:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:40,980 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2019-11-25 08:57:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:41,133 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2019-11-25 08:57:41,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:41,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-25 08:57:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:41,136 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:57:41,136 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:57:41,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:57:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:57:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-25 08:57:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:57:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-25 08:57:41,146 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2019-11-25 08:57:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:41,146 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-25 08:57:41,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:57:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-25 08:57:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:57:41,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:41,148 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:41,148 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -102281283, now seen corresponding path program 1 times [2019-11-25 08:57:41,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:41,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506882032] [2019-11-25 08:57:41,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:57:41,280 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506882032] [2019-11-25 08:57:41,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:41,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:57:41,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936812918] [2019-11-25 08:57:41,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:57:41,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:41,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:57:41,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:41,281 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2019-11-25 08:57:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:41,424 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-25 08:57:41,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:41,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-25 08:57:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:41,426 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:57:41,426 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:57:41,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:57:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:57:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-25 08:57:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:57:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-25 08:57:41,432 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 19 [2019-11-25 08:57:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:41,436 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-25 08:57:41,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:57:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-25 08:57:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:57:41,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:41,439 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:41,439 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1914749337, now seen corresponding path program 1 times [2019-11-25 08:57:41,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:41,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121272932] [2019-11-25 08:57:41,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:57:41,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121272932] [2019-11-25 08:57:41,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:41,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:57:41,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951852357] [2019-11-25 08:57:41,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:57:41,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:57:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:41,533 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2019-11-25 08:57:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:41,601 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-25 08:57:41,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:41,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-25 08:57:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:41,603 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:57:41,603 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:57:41,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:57:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:57:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-25 08:57:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:57:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-25 08:57:41,615 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 20 [2019-11-25 08:57:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:41,615 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-25 08:57:41,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:57:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-25 08:57:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:57:41,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:41,619 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:41,619 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash -675898105, now seen corresponding path program 1 times [2019-11-25 08:57:41,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:41,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090766208] [2019-11-25 08:57:41,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:57:41,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090766208] [2019-11-25 08:57:41,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:41,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:57:41,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914083312] [2019-11-25 08:57:41,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:57:41,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:41,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:57:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:41,728 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2019-11-25 08:57:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:41,786 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-25 08:57:41,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:41,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-25 08:57:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:41,790 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:57:41,790 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:57:41,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:57:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:57:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-25 08:57:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:57:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-25 08:57:41,796 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2019-11-25 08:57:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:41,796 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-25 08:57:41,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:57:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-25 08:57:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-25 08:57:41,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:41,801 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:41,801 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash -482715817, now seen corresponding path program 1 times [2019-11-25 08:57:41,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:41,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232398080] [2019-11-25 08:57:41,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-25 08:57:41,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232398080] [2019-11-25 08:57:41,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:41,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-25 08:57:41,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955878348] [2019-11-25 08:57:41,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:57:41,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:57:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:57:41,956 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2019-11-25 08:57:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:42,022 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-25 08:57:42,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:57:42,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-25 08:57:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:42,024 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:57:42,024 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:57:42,025 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:57:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:57:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:57:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:57:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:57:42,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-25 08:57:42,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:42,026 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:57:42,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:57:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:57:42,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:57:42,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:57:42,095 INFO L444 ceAbstractionStarter]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2019-11-25 08:57:42,095 INFO L444 ceAbstractionStarter]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2019-11-25 08:57:42,095 INFO L440 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= 1 gcd_~y1) (<= (+ gcd_~y1 1) gcd_~y2)) [2019-11-25 08:57:42,095 INFO L444 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L447 ceAbstractionStarter]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2019-11-25 08:57:42,096 INFO L440 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y2 1) gcd_~y1)) [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:57:42,096 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 32) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L447 ceAbstractionStarter]: At program point L41(lines 28 43) the Hoare annotation is: true [2019-11-25 08:57:42,097 INFO L444 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2019-11-25 08:57:42,097 INFO L440 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~m~0) (<= 1 ULTIMATE.start_main_~n~0)) [2019-11-25 08:57:42,098 INFO L444 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-25 08:57:42,098 INFO L444 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-11-25 08:57:42,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:42 BoogieIcfgContainer [2019-11-25 08:57:42,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:42,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:42,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:42,106 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:42,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:40" (3/4) ... [2019-11-25 08:57:42,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:57:42,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-11-25 08:57:42,120 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-25 08:57:42,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:57:42,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_259dc41c-f296-492e-b1c6-31bae05e8157/bin/uautomizer/witness.graphml [2019-11-25 08:57:42,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:42,170 INFO L168 Benchmark]: Toolchain (without parser) took 2796.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.4 MB in the beginning and 961.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 142.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,171 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:42,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:42,172 INFO L168 Benchmark]: Boogie Preprocessor took 15.67 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,173 INFO L168 Benchmark]: RCFGBuilder took 303.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,173 INFO L168 Benchmark]: TraceAbstraction took 2056.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.4 MB in the end (delta: 163.4 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,174 INFO L168 Benchmark]: Witness Printer took 62.63 ms. Allocated memory is still 1.2 GB. Free memory was 966.4 MB in the beginning and 961.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:42,176 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.67 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 303.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2056.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.4 MB in the end (delta: 163.4 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. * Witness Printer took 62.63 ms. Allocated memory is still 1.2 GB. Free memory was 966.4 MB in the beginning and 961.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 96 SDslu, 351 SDs, 0 SdLazy, 300 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=6, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 5212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 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...