./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/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-cad4683 [2019-11-16 00:00:10,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:00:10,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:00:10,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:00:10,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:00:10,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:00:10,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:00:10,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:00:10,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:00:10,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:00:10,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:00:10,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:00:10,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:00:10,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:00:10,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:00:10,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:00:10,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:00:10,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:00:10,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:00:10,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:00:10,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:00:10,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:00:10,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:00:10,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:00:10,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:00:10,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:00:10,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:00:10,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:00:10,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:00:10,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:00:10,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:00:10,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:00:10,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:00:10,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:00:10,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:00:10,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:00:10,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:00:10,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:00:10,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:00:10,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:00:10,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:00:10,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:00:10,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:00:10,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:00:10,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:00:10,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:00:10,217 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:00:10,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:00:10,217 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:00:10,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:00:10,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:00:10,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:00:10,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:00:10,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:00:10,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:00:10,218 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:00:10,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:00:10,219 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:00:10,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:00:10,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:00:10,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:00:10,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:00:10,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:00:10,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:00:10,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:00:10,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:00:10,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:00:10,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:00:10,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:00:10,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:00:10,222 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_b1d22fe7-0503-4b67-89da-f600956388db/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 [2019-11-16 00:00:10,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:00:10,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:00:10,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:00:10,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:00:10,262 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:00:10,262 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-16 00:00:10,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/data/ef961462b/6fb98fcf3e4d425f9bde52ecc72eee57/FLAGcde4f689e [2019-11-16 00:00:10,699 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:00:10,701 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-16 00:00:10,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/data/ef961462b/6fb98fcf3e4d425f9bde52ecc72eee57/FLAGcde4f689e [2019-11-16 00:00:10,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/data/ef961462b/6fb98fcf3e4d425f9bde52ecc72eee57 [2019-11-16 00:00:10,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:00:10,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:00:10,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:00:10,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:00:10,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:00:10,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:10" (1/1) ... [2019-11-16 00:00:10,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0a34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:10, skipping insertion in model container [2019-11-16 00:00:10,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:10" (1/1) ... [2019-11-16 00:00:10,738 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:00:10,753 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:00:10,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:00:10,989 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:00:11,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:00:11,017 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:00:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11 WrapperNode [2019-11-16 00:00:11,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:00:11,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:00:11,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:00:11,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:00:11,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:00:11,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:00:11,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:00:11,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:00:11,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... [2019-11-16 00:00:11,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:00:11,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:00:11,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:00:11,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:00:11,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/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 [2019-11-16 00:00:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:00:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:00:11,270 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:00:11,270 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-16 00:00:11,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:11 BoogieIcfgContainer [2019-11-16 00:00:11,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:00:11,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:00:11,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:00:11,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:00:11,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:10" (1/3) ... [2019-11-16 00:00:11,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8942bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:11, skipping insertion in model container [2019-11-16 00:00:11,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:11" (2/3) ... [2019-11-16 00:00:11,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8942bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:11, skipping insertion in model container [2019-11-16 00:00:11,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:11" (3/3) ... [2019-11-16 00:00:11,283 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-11-16 00:00:11,290 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:00:11,295 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:00:11,305 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:00:11,327 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:00:11,327 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:00:11,327 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:00:11,328 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:00:11,328 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:00:11,328 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:00:11,328 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:00:11,329 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:00:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-16 00:00:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:00:11,348 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:00:11,349 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:00:11,351 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:00:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:00:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash 962347, now seen corresponding path program 1 times [2019-11-16 00:00:11,366 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:00:11,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142752643] [2019-11-16 00:00:11,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:11,367 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:11,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:00:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:00:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:11,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142752643] [2019-11-16 00:00:11,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:00:11,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:00:11,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118134323] [2019-11-16 00:00:11,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:00:11,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:00:11,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:00:11,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:00:11,650 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-16 00:00:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:00:11,707 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-16 00:00:11,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:00:11,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-16 00:00:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:00:11,716 INFO L225 Difference]: With dead ends: 26 [2019-11-16 00:00:11,716 INFO L226 Difference]: Without dead ends: 9 [2019-11-16 00:00:11,719 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:00:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-16 00:00:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-16 00:00:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-16 00:00:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-16 00:00:11,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-11-16 00:00:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:00:11,748 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-16 00:00:11,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:00:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-16 00:00:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-16 00:00:11,749 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:00:11,749 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-16 00:00:11,749 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:00:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:00:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1390656418, now seen corresponding path program 1 times [2019-11-16 00:00:11,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:00:11,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103130403] [2019-11-16 00:00:11,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:11,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:11,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:00:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:00:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:11,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103130403] [2019-11-16 00:00:11,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241564433] [2019-11-16 00:00:11,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/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 [2019-11-16 00:00:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:00:11,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:00:11,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:00:11,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:00:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:11,887 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:00:11,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-16 00:00:11,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80883942] [2019-11-16 00:00:11,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:00:11,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:00:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:00:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:00:11,890 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-16 00:00:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:00:11,948 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-16 00:00:11,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:00:11,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-16 00:00:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:00:11,949 INFO L225 Difference]: With dead ends: 15 [2019-11-16 00:00:11,949 INFO L226 Difference]: Without dead ends: 13 [2019-11-16 00:00:11,950 INFO L600 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 [2019-11-16 00:00:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-16 00:00:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-16 00:00:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-16 00:00:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-16 00:00:11,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2019-11-16 00:00:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:00:11,954 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-16 00:00:11,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:00:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-16 00:00:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:00:11,955 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:00:11,955 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-16 00:00:12,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:00:12,156 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:00:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:00:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash 214023755, now seen corresponding path program 2 times [2019-11-16 00:00:12,157 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:00:12,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947382262] [2019-11-16 00:00:12,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:12,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:12,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:00:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:00:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:12,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947382262] [2019-11-16 00:00:12,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853431949] [2019-11-16 00:00:12,236 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/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 [2019-11-16 00:00:12,265 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:00:12,266 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:00:12,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:00:12,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:00:12,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:00:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:12,284 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:00:12,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-16 00:00:12,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707791381] [2019-11-16 00:00:12,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:00:12,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:00:12,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:00:12,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:00:12,286 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-11-16 00:00:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:00:12,373 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-16 00:00:12,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:00:12,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-16 00:00:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:00:12,374 INFO L225 Difference]: With dead ends: 18 [2019-11-16 00:00:12,374 INFO L226 Difference]: Without dead ends: 16 [2019-11-16 00:00:12,375 INFO L600 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 [2019-11-16 00:00:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-16 00:00:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-16 00:00:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-16 00:00:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-16 00:00:12,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2019-11-16 00:00:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:00:12,381 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-16 00:00:12,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:00:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-16 00:00:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:00:12,382 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:00:12,382 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-16 00:00:12,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:00:12,583 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:00:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:00:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2039914178, now seen corresponding path program 3 times [2019-11-16 00:00:12,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:00:12,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032045586] [2019-11-16 00:00:12,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:12,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:00:12,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:00:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:00:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:00:12,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032045586] [2019-11-16 00:00:12,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829421842] [2019-11-16 00:00:12,676 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/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 [2019-11-16 00:00:12,710 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:00:12,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:00:12,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:00:12,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:00:12,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:00:12,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:00:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:00:12,796 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:00:12,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-16 00:00:12,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641360632] [2019-11-16 00:00:12,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-16 00:00:12,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:00:12,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-16 00:00:12,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:00:12,797 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-11-16 00:00:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:00:13,026 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-16 00:00:13,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:00:13,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-16 00:00:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:00:13,027 INFO L225 Difference]: With dead ends: 19 [2019-11-16 00:00:13,027 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:00:13,028 INFO L600 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 [2019-11-16 00:00:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:00:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:00:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:00:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:00:13,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-16 00:00:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:00:13,029 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:00:13,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-16 00:00:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:00:13,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:00:13,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:00:13,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:00:13,385 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L439 ceAbstractionStarter]: At program point L15(lines 10 16) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) (<= ULTIMATE.start_main_~i~0 0)) [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2019-11-16 00:00:13,386 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-16 00:00:13,387 INFO L439 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)) [2019-11-16 00:00:13,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:00:13 BoogieIcfgContainer [2019-11-16 00:00:13,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:00:13,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:00:13,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:00:13,405 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:00:13,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:11" (3/4) ... [2019-11-16 00:00:13,409 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:00:13,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-16 00:00:13,424 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:00:13,505 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b1d22fe7-0503-4b67-89da-f600956388db/bin/uautomizer/witness.graphml [2019-11-16 00:00:13,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:00:13,512 INFO L168 Benchmark]: Toolchain (without parser) took 2787.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 966.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 108.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:00:13,513 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-16 00:00:13,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:00:13,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.95 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. [2019-11-16 00:00:13,518 INFO L168 Benchmark]: Boogie Preprocessor took 18.61 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. [2019-11-16 00:00:13,519 INFO L168 Benchmark]: RCFGBuilder took 205.67 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:00:13,521 INFO L168 Benchmark]: TraceAbstraction took 2129.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.1 MB in the end (delta: 124.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:00:13,521 INFO L168 Benchmark]: Witness Printer took 105.07 ms. Allocated memory is still 1.2 GB. Free memory was 973.1 MB in the beginning and 966.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:00:13,526 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.95 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 18.61 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 205.67 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2129.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.1 MB in the end (delta: 124.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. * Witness Printer took 105.07 ms. Allocated memory is still 1.2 GB. Free memory was 973.1 MB in the beginning and 966.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 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: (1 == cond && i <= 1000000) || i <= 0 - 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: 2.0s, 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, 0.5s 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, 0.5s 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...