./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.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/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/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 ca707ecc133af2ec0063556d89a3ce449d0860eb .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:50,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:50,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:50,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:50,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:50,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:50,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:50,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:50,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:50,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:50,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:50,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:50,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:50,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:50,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:50,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:50,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:50,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:50,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:50,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:50,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:50,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:50,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:50,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:50,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:50,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:50,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:50,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:50,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:50,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:50,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:50,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:50,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:50,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:50,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:50,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:50,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:50,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:50,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:50,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:50,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:50,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:50,054 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:50,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:50,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:50,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:50,056 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:50,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:50,056 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:50,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:50,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:50,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:50,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:50,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:50,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:50,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:50,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:50,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:50,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:50,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:50,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:50,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:50,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:50,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:50,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:50,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/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 -> ca707ecc133af2ec0063556d89a3ce449d0860eb [2019-10-22 08:57:50,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:50,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:50,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:50,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:50,106 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:50,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 08:57:50,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/data/185b965b8/dd94e25730774cc782e50c8b420f5da1/FLAG4d6c610fe [2019-10-22 08:57:50,521 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:50,522 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 08:57:50,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/data/185b965b8/dd94e25730774cc782e50c8b420f5da1/FLAG4d6c610fe [2019-10-22 08:57:50,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/data/185b965b8/dd94e25730774cc782e50c8b420f5da1 [2019-10-22 08:57:50,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:50,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:50,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:50,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:50,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:50,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:50" (1/1) ... [2019-10-22 08:57:50,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f006943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:50, skipping insertion in model container [2019-10-22 08:57:50,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:50" (1/1) ... [2019-10-22 08:57:50,987 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:51,001 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:51,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:51,124 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:51,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:51,210 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:51,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51 WrapperNode [2019-10-22 08:57:51,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:51,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:51,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:51,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:51,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:51,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:51,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:51,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:51,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... [2019-10-22 08:57:51,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:51,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:51,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:51,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:51,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:51,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:51,533 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 08:57:51,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:51 BoogieIcfgContainer [2019-10-22 08:57:51,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:51,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:51,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:51,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:51,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:50" (1/3) ... [2019-10-22 08:57:51,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553f238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:51, skipping insertion in model container [2019-10-22 08:57:51,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:51" (2/3) ... [2019-10-22 08:57:51,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553f238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:51, skipping insertion in model container [2019-10-22 08:57:51,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:51" (3/3) ... [2019-10-22 08:57:51,542 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-22 08:57:51,550 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:51,556 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:57:51,566 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:57:51,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:51,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:51,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:51,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:51,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:51,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:51,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:51,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 08:57:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:57:51,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:51,616 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:57:51,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 920081230, now seen corresponding path program 1 times [2019-10-22 08:57:51,634 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233842546] [2019-10-22 08:57:51,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233842546] [2019-10-22 08:57:51,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:51,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:51,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063782098] [2019-10-22 08:57:51,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:51,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:51,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:51,819 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-10-22 08:57:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,901 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-22 08:57:51,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:57:51,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 08:57:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:51,910 INFO L225 Difference]: With dead ends: 36 [2019-10-22 08:57:51,910 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 08:57:51,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 08:57:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 08:57:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:57:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-10-22 08:57:51,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2019-10-22 08:57:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:51,945 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-10-22 08:57:51,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-10-22 08:57:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:57:51,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:51,946 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:51,947 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash -565045263, now seen corresponding path program 1 times [2019-10-22 08:57:51,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718585863] [2019-10-22 08:57:51,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718585863] [2019-10-22 08:57:51,995 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:51,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:51,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366898403] [2019-10-22 08:57:51,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:51,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:51,998 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2019-10-22 08:57:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:52,062 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 08:57:52,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:52,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 08:57:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:52,064 INFO L225 Difference]: With dead ends: 17 [2019-10-22 08:57:52,064 INFO L226 Difference]: Without dead ends: 15 [2019-10-22 08:57:52,065 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-22 08:57:52,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-10-22 08:57:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:57:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-22 08:57:52,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-10-22 08:57:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:52,069 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-22 08:57:52,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-22 08:57:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:52,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:52,070 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:52,070 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:52,070 INFO L82 PathProgramCache]: Analyzing trace with hash 889328994, now seen corresponding path program 1 times [2019-10-22 08:57:52,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:52,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638699453] [2019-10-22 08:57:52,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:52,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638699453] [2019-10-22 08:57:52,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701796765] [2019-10-22 08:57:52,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:52,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:57:52,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:52,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:52,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:52,397 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:52,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2019-10-22 08:57:52,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561134383] [2019-10-22 08:57:52,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:57:52,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:52,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:57:52,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:57:52,399 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-10-22 08:57:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:52,544 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-10-22 08:57:52,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:57:52,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-10-22 08:57:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:52,548 INFO L225 Difference]: With dead ends: 23 [2019-10-22 08:57:52,548 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 08:57:52,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:57:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 08:57:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-22 08:57:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:57:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-22 08:57:52,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2019-10-22 08:57:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:52,554 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-22 08:57:52,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:57:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-22 08:57:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:57:52,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:52,554 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 08:57:52,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,755 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash 781964945, now seen corresponding path program 2 times [2019-10-22 08:57:52,756 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:52,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966547890] [2019-10-22 08:57:52,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:57:52,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966547890] [2019-10-22 08:57:52,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434588949] [2019-10-22 08:57:52,819 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,861 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 08:57:52,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:57:52,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 08:57:52,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:52,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:52,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:57:52,910 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:52,910 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2019-10-22 08:57:52,910 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451509739] [2019-10-22 08:57:52,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:52,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:52,911 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2019-10-22 08:57:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:52,977 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-22 08:57:52,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:52,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-22 08:57:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:52,978 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:57:52,978 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:52,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:57:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:52,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-22 08:57:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:52,980 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:52,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:52,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:52,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:53,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:53,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:57:53,321 INFO L443 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:53,322 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:57:53,322 INFO L439 ceAbstractionStarter]: At program point L4-5(lines 1 31) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2019-10-22 08:57:53,322 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 08:57:53,322 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-22 08:57:53,322 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 08:57:53,322 INFO L443 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-10-22 08:57:53,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:53,323 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-10-22 08:57:53,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:57:53,323 INFO L446 ceAbstractionStarter]: At program point L30-1(lines 10 31) the Hoare annotation is: true [2019-10-22 08:57:53,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:57:53,323 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) (.cse1 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0))) (or (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (<= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 (<= (+ ULTIMATE.start_main_~glob2_p_off~0 1) ULTIMATE.start_main_~MAXPATHLEN~0) .cse1))) [2019-10-22 08:57:53,323 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:53,326 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2019-10-22 08:57:53,326 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:53,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:53 BoogieIcfgContainer [2019-10-22 08:57:53,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:53,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:53,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:53,339 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:53,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:51" (3/4) ... [2019-10-22 08:57:53,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:53,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:57:53,354 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:57:53,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d1229e79-fd25-4202-8560-9ee7062e7782/bin/uautomizer/witness.graphml [2019-10-22 08:57:53,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:53,402 INFO L168 Benchmark]: Toolchain (without parser) took 2429.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 944.5 MB in the beginning and 957.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 102.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:53,402 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:53,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:53,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:53,403 INFO L168 Benchmark]: Boogie Preprocessor took 15.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:53,403 INFO L168 Benchmark]: RCFGBuilder took 277.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:53,404 INFO L168 Benchmark]: TraceAbstraction took 1803.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 962.7 MB in the end (delta: 128.5 MB). Peak memory consumption was 128.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:53,404 INFO L168 Benchmark]: Witness Printer took 61.10 ms. Allocated memory is still 1.1 GB. Free memory was 962.7 MB in the beginning and 957.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:53,406 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 277.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1803.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 962.7 MB in the end (delta: 128.5 MB). Peak memory consumption was 128.5 MB. Max. memory is 11.5 GB. * Witness Printer took 61.10 ms. Allocated memory is still 1.1 GB. Free memory was 962.7 MB in the beginning and 957.3 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 1 == cond) && 0 <= glob2_p_off) && glob2_p_off <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 0 <= glob2_p_off) && 1 == cond) && glob2_pathlim_off <= MAXPATHLEN) || (((glob2_p_off <= 0 && 0 <= glob2_p_off) && glob2_p_off + 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= MAXPATHLEN && 1 == cond) && 0 <= glob2_p_off) && glob2_p_off <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 29 SDtfs, 57 SDslu, 37 SDs, 0 SdLazy, 73 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 63 HoareAnnotationTreeSize, 5 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 76 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 3677 SizeOfPredicates, 17 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...