./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c826362a5918246036ef78d4af04f2cfb17ad97 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c826362a5918246036ef78d4af04f2cfb17ad97 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:42:58,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:42:58,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:42:58,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:42:58,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:42:58,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:42:58,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:42:58,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:42:58,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:42:58,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:42:58,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:42:58,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:42:58,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:42:58,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:42:58,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:42:58,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:42:58,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:42:58,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:42:58,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:42:58,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:42:58,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:42:58,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:42:58,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:42:58,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:42:58,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:42:58,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:42:58,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:42:58,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:42:58,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:42:58,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:42:58,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:42:58,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:42:58,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:42:58,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:42:58,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:42:58,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:42:58,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:42:58,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:42:58,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:42:58,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:42:58,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:42:58,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:42:58,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:42:58,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:42:58,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:42:58,388 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:42:58,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:42:58,388 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:42:58,388 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:42:58,388 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:42:58,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:42:58,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:42:58,389 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:42:58,389 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:42:58,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:42:58,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:42:58,390 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:42:58,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:42:58,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:42:58,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:42:58,392 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:42:58,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:42:58,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:42:58,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:42:58,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:42:58,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:42:58,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:42:58,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:42:58,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:42:58,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:42:58,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:42:58,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:42:58,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:42:58,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:42:58,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan 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 -> Taipan 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 -> 6c826362a5918246036ef78d4af04f2cfb17ad97 [2019-11-26 02:42:58,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:42:58,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:42:58,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:42:58,588 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:42:58,588 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:42:58,589 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-11-26 02:42:58,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/a1f5a8f86/fc4048486c714fdba466b9fd72dbb4c8/FLAGdba82cc7b [2019-11-26 02:42:59,041 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:42:59,042 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-11-26 02:42:59,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/a1f5a8f86/fc4048486c714fdba466b9fd72dbb4c8/FLAGdba82cc7b [2019-11-26 02:42:59,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/a1f5a8f86/fc4048486c714fdba466b9fd72dbb4c8 [2019-11-26 02:42:59,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:42:59,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:42:59,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:59,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:42:59,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:42:59,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b046d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59, skipping insertion in model container [2019-11-26 02:42:59,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:42:59,499 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:42:59,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:59,758 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:42:59,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:59,803 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:42:59,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59 WrapperNode [2019-11-26 02:42:59,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:59,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:59,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:42:59,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:42:59,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:59,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:42:59,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:42:59,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:42:59,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... [2019-11-26 02:42:59,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:42:59,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:42:59,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:42:59,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:42:59,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/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 [2019-11-26 02:42:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:42:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:42:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:42:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:42:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:42:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:43:00,354 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:43:00,354 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:43:00,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:00 BoogieIcfgContainer [2019-11-26 02:43:00,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:43:00,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:43:00,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:43:00,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:43:00,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:42:59" (1/3) ... [2019-11-26 02:43:00,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3c4fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:00, skipping insertion in model container [2019-11-26 02:43:00,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:59" (2/3) ... [2019-11-26 02:43:00,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3c4fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:00, skipping insertion in model container [2019-11-26 02:43:00,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:00" (3/3) ... [2019-11-26 02:43:00,363 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2019-11-26 02:43:00,372 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:43:00,378 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:43:00,389 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:43:00,410 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:43:00,410 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:43:00,410 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:43:00,410 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:43:00,411 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:43:00,411 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:43:00,411 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:43:00,411 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:43:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:43:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:43:00,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:00,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:43:00,428 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:00,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1684850581, now seen corresponding path program 1 times [2019-11-26 02:43:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:43:00,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726454650] [2019-11-26 02:43:00,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:43:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:00,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726454650] [2019-11-26 02:43:00,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:43:00,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:43:00,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927185403] [2019-11-26 02:43:00,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:43:00,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:43:00,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:43:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:43:00,569 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-26 02:43:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:00,598 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2019-11-26 02:43:00,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:43:00,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:43:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:00,612 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:43:00,612 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:43:00,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:43:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:43:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:43:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:43:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-26 02:43:00,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-26 02:43:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:00,644 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-26 02:43:00,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:43:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-26 02:43:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:43:00,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:00,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:00,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash -175580864, now seen corresponding path program 1 times [2019-11-26 02:43:00,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:43:00,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362331812] [2019-11-26 02:43:00,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:43:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:43:00,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362331812] [2019-11-26 02:43:00,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752816349] [2019-11-26 02:43:00,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/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 [2019-11-26 02:43:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:00,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:43:00,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:43:00,785 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:43:00,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648787758] [2019-11-26 02:43:00,840 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:43:00,840 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:43:00,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:43:00,851 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:43:00,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:43:01,485 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:43:01,634 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-11-26 02:43:01,880 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:43:01,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:43:01,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2019-11-26 02:43:01,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663064108] [2019-11-26 02:43:01,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:43:01,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:43:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:43:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:43:01,883 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 7 states. [2019-11-26 02:43:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:01,931 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2019-11-26 02:43:01,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:43:01,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-26 02:43:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:01,933 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:43:01,934 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:43:01,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:43:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:43:01,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:43:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:43:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-26 02:43:01,939 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2019-11-26 02:43:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:01,940 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-26 02:43:01,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:43:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-26 02:43:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:43:01,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:01,945 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:02,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:02,150 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:02,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1868152661, now seen corresponding path program 2 times [2019-11-26 02:43:02,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:43:02,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238803344] [2019-11-26 02:43:02,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:43:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:43:02,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238803344] [2019-11-26 02:43:02,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125608826] [2019-11-26 02:43:02,232 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/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 [2019-11-26 02:43:02,292 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:43:02,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:43:02,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-26 02:43:02,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:43:02,468 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:02,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:02,731 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:43:02,735 INFO L168 Benchmark]: Toolchain (without parser) took 3271.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 860.9 MB in the end (delta: 89.1 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,735 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-26 02:43:02,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.55 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. [2019-11-26 02:43:02,737 INFO L168 Benchmark]: Boogie Preprocessor took 23.47 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. [2019-11-26 02:43:02,739 INFO L168 Benchmark]: RCFGBuilder took 495.60 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,743 INFO L168 Benchmark]: TraceAbstraction took 2377.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 860.9 MB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,747 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 338.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.55 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 23.47 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 495.60 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2377.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 860.9 MB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:43:04,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:43:04,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:43:04,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:43:04,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:43:04,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:43:04,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:43:04,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:43:04,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:43:04,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:43:04,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:43:04,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:43:04,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:43:04,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:43:04,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:43:04,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:43:04,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:43:04,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:43:04,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:43:04,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:43:04,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:43:04,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:43:04,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:43:04,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:43:04,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:43:04,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:43:04,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:43:04,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:43:04,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:43:04,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:43:04,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:43:04,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:43:04,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:43:04,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:43:04,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:43:04,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:43:04,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:43:04,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:43:04,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:43:04,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:43:04,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:43:04,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:43:04,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:43:04,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:43:04,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:43:04,661 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:43:04,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:43:04,661 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:43:04,662 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:43:04,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:43:04,662 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:43:04,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:43:04,663 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:43:04,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:43:04,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:43:04,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:43:04,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:43:04,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:43:04,664 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:43:04,664 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:43:04,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:43:04,665 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:43:04,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:43:04,665 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:43:04,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:43:04,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:43:04,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:43:04,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:43:04,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:43:04,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:43:04,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:43:04,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:43:04,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:43:04,667 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:43:04,668 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:43:04,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:43:04,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:43:04,668 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan 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 -> Taipan 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 -> 6c826362a5918246036ef78d4af04f2cfb17ad97 [2019-11-26 02:43:04,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:43:04,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:43:04,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:43:04,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:43:04,958 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:43:04,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-11-26 02:43:05,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/ffa60c0cc/7e6cc8f88e8e460da0be6949b920a307/FLAG035a3051a [2019-11-26 02:43:05,355 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:43:05,356 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2019-11-26 02:43:05,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/ffa60c0cc/7e6cc8f88e8e460da0be6949b920a307/FLAG035a3051a [2019-11-26 02:43:05,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/data/ffa60c0cc/7e6cc8f88e8e460da0be6949b920a307 [2019-11-26 02:43:05,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:43:05,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:43:05,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:05,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:43:05,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:43:05,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:05" (1/1) ... [2019-11-26 02:43:05,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c23c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:05, skipping insertion in model container [2019-11-26 02:43:05,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:05" (1/1) ... [2019-11-26 02:43:05,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:43:05,797 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:43:05,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:05,973 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:43:05,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:06,014 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:43:06,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06 WrapperNode [2019-11-26 02:43:06,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:06,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:06,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:43:06,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:43:06,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:06,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:43:06,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:43:06,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:43:06,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... [2019-11-26 02:43:06,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:43:06,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:43:06,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:43:06,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:43:06,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/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 [2019-11-26 02:43:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:43:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:43:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:43:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:43:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:43:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:43:06,437 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:43:06,437 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:43:06,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:06 BoogieIcfgContainer [2019-11-26 02:43:06,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:43:06,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:43:06,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:43:06,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:43:06,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:43:05" (1/3) ... [2019-11-26 02:43:06,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ca5389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:06, skipping insertion in model container [2019-11-26 02:43:06,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:06" (2/3) ... [2019-11-26 02:43:06,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ca5389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:06, skipping insertion in model container [2019-11-26 02:43:06,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:06" (3/3) ... [2019-11-26 02:43:06,445 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2019-11-26 02:43:06,454 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:43:06,460 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:43:06,470 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:43:06,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:43:06,492 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:43:06,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:43:06,492 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:43:06,492 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:43:06,492 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:43:06,493 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:43:06,493 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:43:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:43:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:43:06,511 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:06,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:06,512 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:06,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2019-11-26 02:43:06,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:43:06,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1432149494] [2019-11-26 02:43:06,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:06,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:43:06,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:06,653 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:43:06,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1432149494] [2019-11-26 02:43:06,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:43:06,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:43:06,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071225533] [2019-11-26 02:43:06,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:43:06,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:43:06,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:43:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:43:06,688 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-11-26 02:43:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:06,764 INFO L93 Difference]: Finished difference Result 38 states and 56 transitions. [2019-11-26 02:43:06,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:43:06,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-26 02:43:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:06,779 INFO L225 Difference]: With dead ends: 38 [2019-11-26 02:43:06,780 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:43:06,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:43:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:43:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:43:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:43:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-26 02:43:06,815 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2019-11-26 02:43:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:06,816 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-26 02:43:06,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:43:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-26 02:43:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:43:06,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:06,817 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:07,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:07,019 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -799235507, now seen corresponding path program 1 times [2019-11-26 02:43:07,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:43:07,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [130654387] [2019-11-26 02:43:07,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:07,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:43:07,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:43:07,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:43:07,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [130654387] [2019-11-26 02:43:07,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656979084] [2019-11-26 02:43:07,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/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 [2019-11-26 02:43:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:07,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:43:07,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:43:07,304 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:43:07,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:43:07,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2019-11-26 02:43:07,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927472793] [2019-11-26 02:43:07,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:43:07,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:43:07,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:43:07,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:43:07,312 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2019-11-26 02:43:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:07,608 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-11-26 02:43:07,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:43:07,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-26 02:43:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:07,610 INFO L225 Difference]: With dead ends: 49 [2019-11-26 02:43:07,610 INFO L226 Difference]: Without dead ends: 36 [2019-11-26 02:43:07,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:43:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-26 02:43:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-26 02:43:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-26 02:43:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-26 02:43:07,619 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2019-11-26 02:43:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:07,619 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-26 02:43:07,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:43:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-26 02:43:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:43:07,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:07,621 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:08,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:08,023 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash -189699779, now seen corresponding path program 2 times [2019-11-26 02:43:08,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:43:08,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1853755847] [2019-11-26 02:43:08,025 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:08,130 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:43:08,130 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:43:08,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:43:08,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-26 02:43:08,222 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-26 02:43:08,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1853755847] [2019-11-26 02:43:08,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282452222] [2019-11-26 02:43:08,501 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:08,588 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:43:08,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:43:08,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:43:08,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-26 02:43:08,629 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-26 02:43:08,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:43:08,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2019-11-26 02:43:08,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644404163] [2019-11-26 02:43:08,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-26 02:43:08,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:43:08,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-26 02:43:08,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:43:08,650 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 16 states. [2019-11-26 02:43:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:09,689 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2019-11-26 02:43:09,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-26 02:43:09,692 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2019-11-26 02:43:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:09,693 INFO L225 Difference]: With dead ends: 89 [2019-11-26 02:43:09,693 INFO L226 Difference]: Without dead ends: 68 [2019-11-26 02:43:09,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:43:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-26 02:43:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-26 02:43:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-26 02:43:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-11-26 02:43:09,718 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 33 [2019-11-26 02:43:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:09,719 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2019-11-26 02:43:09,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-26 02:43:09,719 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2019-11-26 02:43:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-26 02:43:09,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:09,725 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:10,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:10,136 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash -773564643, now seen corresponding path program 3 times [2019-11-26 02:43:10,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:43:10,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1821593093] [2019-11-26 02:43:10,137 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a44d2e3-1839-43db-950e-1ae88845d1f4/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:10,265 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:43:10,265 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:43:10,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:43:10,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:10,322 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-26 02:43:10,323 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:10,335 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:10,335 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:43:10,336 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2019-11-26 02:43:10,373 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2019-11-26 02:43:10,374 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:10,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:10,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:43:10,415 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-26 02:43:10,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:43:14,872 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:43:14,879 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:14,879 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 39 [2019-11-26 02:43:14,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:43:14,881 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:14,907 INFO L567 ElimStorePlain]: treesize reduction 29, result has 9.4 percent of original size [2019-11-26 02:43:14,907 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:43:14,907 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:3 [2019-11-26 02:43:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2019-11-26 02:43:14,952 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:33,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:43:33,823 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:43:33,828 INFO L168 Benchmark]: Toolchain (without parser) took 28063.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.1 MB in the beginning and 857.8 MB in the end (delta: 93.3 MB). Peak memory consumption was 236.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,828 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:33,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,830 INFO L168 Benchmark]: Boogie Preprocessor took 35.26 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,831 INFO L168 Benchmark]: RCFGBuilder took 298.83 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,831 INFO L168 Benchmark]: TraceAbstraction took 27387.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 857.8 MB in the end (delta: 252.0 MB). Peak memory consumption was 252.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:33,840 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.26 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 298.83 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27387.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 857.8 MB in the end (delta: 252.0 MB). Peak memory consumption was 252.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...