./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant.i --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_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:57:47,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:47,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:47,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:47,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:47,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:47,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:47,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:47,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:47,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:47,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:47,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:47,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:47,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:47,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:47,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:47,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:47,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:47,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:47,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:47,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:47,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:47,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:47,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:47,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:47,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:47,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:47,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:47,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:47,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:47,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:47,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:47,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:47,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:47,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:47,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:47,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:47,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:47,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:47,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:47,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:47,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:57:47,404 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:47,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:47,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:47,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:47,406 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:47,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:47,406 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:57:47,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:57:47,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:57:47,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:47,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:47,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:57:47,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:47,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:47,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:57:47,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:57:47,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:57:47,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:47,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:57:47,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:57:47,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:47,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:57:47,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:57:47,410 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_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 -> 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 [2019-11-25 08:57:47,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:47,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:47,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:47,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:47,571 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:47,571 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-25 08:57:47,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/data/148e3eff2/b3fd8e52d11843e483b4385f073afab7/FLAG65cf2d41f [2019-11-25 08:57:47,945 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:47,948 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-25 08:57:47,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/data/148e3eff2/b3fd8e52d11843e483b4385f073afab7/FLAG65cf2d41f [2019-11-25 08:57:48,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/data/148e3eff2/b3fd8e52d11843e483b4385f073afab7 [2019-11-25 08:57:48,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:48,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:48,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:48,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:48,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:48,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6781c465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48, skipping insertion in model container [2019-11-25 08:57:48,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:48,389 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:48,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:48,527 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:48,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:48,611 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:48,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48 WrapperNode [2019-11-25 08:57:48,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:48,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:48,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:48,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:48,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:48,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:48,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:48,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:48,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... [2019-11-25 08:57:48,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:48,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:48,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:48,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:48,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 08:57:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:48,821 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:48,821 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:57:48,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:48 BoogieIcfgContainer [2019-11-25 08:57:48,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:48,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:57:48,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:57:48,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:57:48,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:57:48" (1/3) ... [2019-11-25 08:57:48,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c940d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:48, skipping insertion in model container [2019-11-25 08:57:48,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:48" (2/3) ... [2019-11-25 08:57:48,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c940d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:48, skipping insertion in model container [2019-11-25 08:57:48,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:48" (3/3) ... [2019-11-25 08:57:48,828 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-11-25 08:57:48,834 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:57:48,838 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:57:48,846 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:57:48,864 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:57:48,864 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:57:48,865 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:57:48,865 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:48,865 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:48,865 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:57:48,865 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:48,865 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:57:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-25 08:57:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:57:48,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:48,880 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:57:48,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 962347, now seen corresponding path program 1 times [2019-11-25 08:57:48,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:48,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910554261] [2019-11-25 08:57:48,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:49,021 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 08:57:49,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910554261] [2019-11-25 08:57:49,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:49,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:57:49,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823983136] [2019-11-25 08:57:49,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:49,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:49,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:57:49,044 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-25 08:57:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:49,104 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-25 08:57:49,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:49,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-25 08:57:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:49,114 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:57:49,114 INFO L226 Difference]: Without dead ends: 9 [2019-11-25 08:57:49,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-25 08:57:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-25 08:57:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:57:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-25 08:57:49,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-11-25 08:57:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:49,146 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-25 08:57:49,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-25 08:57:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:57:49,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:49,147 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-25 08:57:49,147 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1390656418, now seen corresponding path program 1 times [2019-11-25 08:57:49,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:49,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541321054] [2019-11-25 08:57:49,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:49,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541321054] [2019-11-25 08:57:49,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284551467] [2019-11-25 08:57:49,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 [2019-11-25 08:57:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:49,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:49,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:49,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:57:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:49,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:49,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-25 08:57:49,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080948055] [2019-11-25 08:57:49,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:57:49,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:49,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:57:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:49,282 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-25 08:57:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:49,354 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-25 08:57:49,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:49,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-25 08:57:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:49,356 INFO L225 Difference]: With dead ends: 15 [2019-11-25 08:57:49,356 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:57:49,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:57:49,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:57:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-25 08:57:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:57:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-25 08:57:49,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2019-11-25 08:57:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:49,361 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-25 08:57:49,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:57:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-25 08:57:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:57:49,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:49,364 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-25 08:57:49,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:49,565 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:49,566 INFO L82 PathProgramCache]: Analyzing trace with hash 214023755, now seen corresponding path program 2 times [2019-11-25 08:57:49,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:49,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470658456] [2019-11-25 08:57:49,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:49,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470658456] [2019-11-25 08:57:49,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569892855] [2019-11-25 08:57:49,618 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 [2019-11-25 08:57:49,653 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:57:49,653 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:57:49,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:57:49,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:49,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:57:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:49,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-25 08:57:49,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347287556] [2019-11-25 08:57:49,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:57:49,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:57:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:57:49,679 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-11-25 08:57:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:49,766 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-25 08:57:49,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:57:49,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-25 08:57:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:49,768 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:57:49,768 INFO L226 Difference]: Without dead ends: 16 [2019-11-25 08:57:49,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:57:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-25 08:57:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-25 08:57:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:57:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-25 08:57:49,774 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2019-11-25 08:57:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:49,774 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-25 08:57:49,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:57:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-25 08:57:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:57:49,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:49,775 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-25 08:57:49,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:49,980 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:49,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:49,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2039914178, now seen corresponding path program 3 times [2019-11-25 08:57:49,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:49,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784492568] [2019-11-25 08:57:49,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:50,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784492568] [2019-11-25 08:57:50,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61464135] [2019-11-25 08:57:50,072 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/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 [2019-11-25 08:57:50,098 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:57:50,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:57:50,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:57:50,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:50,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:57:50,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:57:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:57:50,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:50,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-25 08:57:50,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044417646] [2019-11-25 08:57:50,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:57:50,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:57:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:57:50,204 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-11-25 08:57:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:50,397 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-25 08:57:50,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:57:50,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-25 08:57:50,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:50,398 INFO L225 Difference]: With dead ends: 19 [2019-11-25 08:57:50,398 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:57:50,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:57:50,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:57:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:57:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:57:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:57:50,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-25 08:57:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:50,400 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:57:50,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:57:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:57:50,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:57:50,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:50,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:57:50,755 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:57:50,756 INFO L440 ceAbstractionStarter]: At program point L15(lines 10 16) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-11-25 08:57:50,756 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-25 08:57:50,756 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:57:50,756 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:57:50,756 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:57:50,756 INFO L440 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000))) [2019-11-25 08:57:50,757 INFO L444 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2019-11-25 08:57:50,757 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:57:50,757 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 16) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~i~0 1000000)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) [2019-11-25 08:57:50,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:50 BoogieIcfgContainer [2019-11-25 08:57:50,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:50,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:50,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:50,775 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:50,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:48" (3/4) ... [2019-11-25 08:57:50,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:57:50,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:57:50,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:57:50,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5133a1b1-dba6-4e81-acfc-f9a2c9edc50b/bin/uautomizer/witness.graphml [2019-11-25 08:57:50,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:50,845 INFO L168 Benchmark]: Toolchain (without parser) took 2480.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 985.2 MB in the end (delta: -40.5 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:50,845 INFO L168 Benchmark]: CDTParser took 2.38 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 08:57:50,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:50,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.01 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 08:57:50,847 INFO L168 Benchmark]: Boogie Preprocessor took 16.02 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 08:57:50,847 INFO L168 Benchmark]: RCFGBuilder took 167.20 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:50,848 INFO L168 Benchmark]: TraceAbstraction took 1951.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.6 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:50,851 INFO L168 Benchmark]: Witness Printer took 67.60 ms. Allocated memory is still 1.2 GB. Free memory was 990.6 MB in the beginning and 985.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:50,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.38 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 247.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.01 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 16.02 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. * RCFGBuilder took 167.20 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1951.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.6 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 67.60 ms. Allocated memory is still 1.2 GB. Free memory was 990.6 MB in the beginning and 985.2 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: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: i <= 1000000 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 0 || (1 == cond && i <= 1000000) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(i == 1000000) && 1 == cond) && i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 18 SDtfs, 49 SDslu, 29 SDs, 0 SdLazy, 57 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 434 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1605 SizeOfPredicates, 11 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 14/48 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...