./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/n.c11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/n.c11.c -s /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 f82cf7726c8201fc884c9fdb36548fce0440ab7f ................................................................................................................................................................................................................................................................................................................................................................ 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/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/n.c11.c -s /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 f82cf7726c8201fc884c9fdb36548fce0440ab7f ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:06,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:06,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:06,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:06,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:06,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:06,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:06,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:06,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:06,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:06,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:06,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:06,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:06,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:06,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:06,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:06,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:06,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:06,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:06,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:06,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:06,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:06,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:06,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:06,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:06,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:06,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:06,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:06,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:06,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:06,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:06,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:06,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:06,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:06,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:06,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:06,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:06,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:06,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:06,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:06,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:06,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:06,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:06,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:06,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:06,149 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:06,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:06,149 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:06,150 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:06,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:06,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:06,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:06,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:06,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:06,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:06,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:06,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:06,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:06,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:06,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:06,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:06,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:06,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:06,154 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:06,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:06,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:06,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:06,156 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/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 -> f82cf7726c8201fc884c9fdb36548fce0440ab7f [2019-10-22 11:21:06,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:06,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:06,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:06,204 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:06,204 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:06,204 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/../../sv-benchmarks/c/loops/n.c11.c [2019-10-22 11:21:06,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/c36a37af6/7edb509aa0b7443da888763fde221563/FLAGf41d9536c [2019-10-22 11:21:06,617 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:06,618 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/sv-benchmarks/c/loops/n.c11.c [2019-10-22 11:21:06,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/c36a37af6/7edb509aa0b7443da888763fde221563/FLAGf41d9536c [2019-10-22 11:21:07,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/c36a37af6/7edb509aa0b7443da888763fde221563 [2019-10-22 11:21:07,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:07,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:07,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:07,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:07,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:07,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2648a5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07, skipping insertion in model container [2019-10-22 11:21:07,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,050 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:07,065 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:07,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:07,224 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:07,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:07,311 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:07,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07 WrapperNode [2019-10-22 11:21:07,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:07,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:07,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:07,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:07,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:07,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:07,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:07,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:07,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... [2019-10-22 11:21:07,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:07,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:07,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:07,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:07,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 [2019-10-22 11:21:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:07,580 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:07,580 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:21:07,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:07 BoogieIcfgContainer [2019-10-22 11:21:07,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:07,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:07,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:07,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:07,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:07" (1/3) ... [2019-10-22 11:21:07,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12714ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:07, skipping insertion in model container [2019-10-22 11:21:07,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:07" (2/3) ... [2019-10-22 11:21:07,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12714ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:07, skipping insertion in model container [2019-10-22 11:21:07,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:07" (3/3) ... [2019-10-22 11:21:07,589 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2019-10-22 11:21:07,597 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:07,603 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:07,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:07,629 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:07,629 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:07,629 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:07,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:07,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:07,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:07,630 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:07,630 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 11:21:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:07,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,648 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:07,649 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-10-22 11:21:07,662 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286581444] [2019-10-22 11:21:07,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286581444] [2019-10-22 11:21:07,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:07,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663361533] [2019-10-22 11:21:07,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:07,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:07,758 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-10-22 11:21:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,769 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-10-22 11:21:07,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:07,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:21:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,776 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:21:07,777 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 11:21:07,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 11:21:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 11:21:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 11:21:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 11:21:07,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-10-22 11:21:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,801 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 11:21:07,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-10-22 11:21:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:07,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,802 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:07,802 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-10-22 11:21:07,803 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,803 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127226607] [2019-10-22 11:21:07,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127226607] [2019-10-22 11:21:07,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:07,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498968745] [2019-10-22 11:21:07,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:07,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:07,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:07,883 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-10-22 11:21:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,921 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-10-22 11:21:07,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:07,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 11:21:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,922 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:21:07,923 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 11:21:07,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 11:21:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 11:21:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:21:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:21:07,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-10-22 11:21:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,926 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:21:07,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:21:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:21:07,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,927 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,927 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash 665854491, now seen corresponding path program 1 times [2019-10-22 11:21:07,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019638101] [2019-10-22 11:21:07,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019638101] [2019-10-22 11:21:07,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011633301] [2019-10-22 11:21:07,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 [2019-10-22 11:21:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,025 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:21:08,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:08,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,093 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1342091220] [2019-10-22 11:21:08,133 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 9 [2019-10-22 11:21:08,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:21:08,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:21:08,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:08,422 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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) [2019-10-22 11:21:08,426 INFO L168 Benchmark]: Toolchain (without parser) took 1387.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:08,426 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:08,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -230.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:08,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:08,428 INFO L168 Benchmark]: Boogie Preprocessor took 17.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:08,428 INFO L168 Benchmark]: RCFGBuilder took 221.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:08,429 INFO L168 Benchmark]: TraceAbstraction took 842.75 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:08,432 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -230.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 842.75 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:10,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:10,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:10,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:10,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:10,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:10,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:10,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:10,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:10,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:10,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:10,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:10,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:10,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:10,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:10,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:10,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:10,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:10,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:10,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:10,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:10,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:10,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:10,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:10,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:10,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:10,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:10,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:10,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:10,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:10,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:10,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:10,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:10,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:10,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:10,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:10,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:10,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:10,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:10,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:10,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:10,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:10,413 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:10,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:10,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:10,414 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:10,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:10,414 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:10,415 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:10,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:10,415 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:10,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:10,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:10,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:10,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:10,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:10,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:10,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:10,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:10,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:10,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:10,420 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/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 -> f82cf7726c8201fc884c9fdb36548fce0440ab7f [2019-10-22 11:21:10,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:10,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:10,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:10,462 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:10,462 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:10,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/../../sv-benchmarks/c/loops/n.c11.c [2019-10-22 11:21:10,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/962113f9c/580107a56bc848cbb9095f4e3112ffc4/FLAG332162962 [2019-10-22 11:21:10,885 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:10,887 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/sv-benchmarks/c/loops/n.c11.c [2019-10-22 11:21:10,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/962113f9c/580107a56bc848cbb9095f4e3112ffc4/FLAG332162962 [2019-10-22 11:21:10,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/data/962113f9c/580107a56bc848cbb9095f4e3112ffc4 [2019-10-22 11:21:10,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:10,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:10,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:10,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:10,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:10,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddf1ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,926 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:10,940 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:11,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:11,109 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:11,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:11,140 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:11,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11 WrapperNode [2019-10-22 11:21:11,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:11,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:11,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:11,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:11,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:11,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:11,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:11,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:11,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:11,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:11,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:11,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:11,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 [2019-10-22 11:21:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:11,456 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:11,456 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:21:11,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:11 BoogieIcfgContainer [2019-10-22 11:21:11,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:11,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:11,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:11,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:11,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:10" (1/3) ... [2019-10-22 11:21:11,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b5bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:11, skipping insertion in model container [2019-10-22 11:21:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11" (2/3) ... [2019-10-22 11:21:11,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b5bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:11, skipping insertion in model container [2019-10-22 11:21:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:11" (3/3) ... [2019-10-22 11:21:11,464 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2019-10-22 11:21:11,473 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:11,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:11,490 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:11,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:11,515 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:11,515 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:11,515 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:11,515 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:11,515 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:11,516 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:11,516 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 11:21:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:11,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,539 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:11,541 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,547 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-10-22 11:21:11,556 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:11,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [323208556] [2019-10-22 11:21:11,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 [2019-10-22 11:21:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:21:11,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:11,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:11,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [323208556] [2019-10-22 11:21:11,707 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:11,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525560423] [2019-10-22 11:21:11,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:11,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:11,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:11,726 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-10-22 11:21:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,740 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-10-22 11:21:11,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:11,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:21:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,751 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:21:11,751 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 11:21:11,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 11:21:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 11:21:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 11:21:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 11:21:11,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-10-22 11:21:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,785 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 11:21:11,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-10-22 11:21:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:11,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,785 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:11,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:11,986 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-10-22 11:21:11,987 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:11,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1691753570] [2019-10-22 11:21:11,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/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 [2019-10-22 11:21:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:12,029 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:21:12,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1691753570] [2019-10-22 11:21:12,115 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:12,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-10-22 11:21:12,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734286581] [2019-10-22 11:21:12,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:12,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:12,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:12,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:12,117 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 6 states. [2019-10-22 11:21:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:12,198 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-10-22 11:21:12,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:12,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-10-22 11:21:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:12,199 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:21:12,199 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:21:12,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:21:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-10-22 11:21:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:21:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-22 11:21:12,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2019-10-22 11:21:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:12,207 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 11:21:12,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-10-22 11:21:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:21:12,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:12,207 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 11:21:12,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:12,408 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:12,409 INFO L82 PathProgramCache]: Analyzing trace with hash -386546321, now seen corresponding path program 1 times [2019-10-22 11:21:12,409 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:12,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [491096153] [2019-10-22 11:21:12,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:12,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:12,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,485 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [491096153] [2019-10-22 11:21:12,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088185463] [2019-10-22 11:21:12,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:12,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:12,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,631 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:12,637 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:21:12,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:21:12,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739224024] [2019-10-22 11:21:12,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:21:12,638 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:21:12,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:21:12,639 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 10 states. [2019-10-22 11:21:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:12,817 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-10-22 11:21:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:21:12,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-10-22 11:21:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:12,819 INFO L225 Difference]: With dead ends: 30 [2019-10-22 11:21:12,819 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:21:12,820 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:21:12,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:21:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:21:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:21:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:21:12,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-22 11:21:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:12,821 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:21:12,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:21:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:21:12,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:21:13,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:13,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:21:13,283 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:21:13,283 INFO L446 ceAbstractionStarter]: At program point L29(lines 12 32) the Hoare annotation is: true [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 22) no Hoare annotation was computed. [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 22) no Hoare annotation was computed. [2019-10-22 11:21:13,284 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 27) the Hoare annotation is: (bvult ULTIMATE.start_main_~len~0 (_ bv5 32)) [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point L19-3(lines 19 27) no Hoare annotation was computed. [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:21:13,284 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:21:13,285 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:21:13,285 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:21:13,285 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-10-22 11:21:13,289 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 [2019-10-22 11:21:13,290 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 [2019-10-22 11:21:13,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:13 BoogieIcfgContainer [2019-10-22 11:21:13,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:13,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:13,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:13,294 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:13,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:11" (3/4) ... [2019-10-22 11:21:13,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:21:13,310 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:21:13,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:21:13,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_11802108-8acb-4b10-9d44-10d67c2ac56c/bin/utaipan/witness.graphml [2019-10-22 11:21:13,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:13,376 INFO L168 Benchmark]: Toolchain (without parser) took 2464.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -122.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,376 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:13,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.28 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 937.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 937.6 MB in the beginning and 1.2 GB in the end (delta: -238.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,378 INFO L168 Benchmark]: Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,378 INFO L168 Benchmark]: RCFGBuilder took 205.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,379 INFO L168 Benchmark]: TraceAbstraction took 1835.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 86.2 MB). Peak memory consumption was 86.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:13,379 INFO L168 Benchmark]: Witness Printer took 80.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:13,382 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.28 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 937.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 937.6 MB in the beginning and 1.2 GB in the end (delta: -238.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 205.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1835.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 86.2 MB). Peak memory consumption was 86.2 MB. Max. memory is 11.5 GB. * Witness Printer took 80.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2019-10-22 11:21:13,400 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 [2019-10-22 11:21:13,400 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation cannot identify Boogie2SMT function ~bvult32 Derived loop invariant: NULL - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 23 SDslu, 30 SDs, 0 SdLazy, 54 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1544 SizeOfPredicates, 9 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...