./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/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 e13e8a6faae9db7b7c8fcdc2a4577173af3d914c ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/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 e13e8a6faae9db7b7c8fcdc2a4577173af3d914c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 03:02:01,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:02:01,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:02:01,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:02:01,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:02:01,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:02:01,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:02:01,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:02:01,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:02:01,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:02:01,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:02:01,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:02:01,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:02:01,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:02:01,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:02:01,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:02:01,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:02:01,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:02:01,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:02:01,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:02:01,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:02:01,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:02:01,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:02:01,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:02:01,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:02:01,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:02:01,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:02:01,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:02:01,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:02:01,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:02:01,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:02:01,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:02:01,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:02:01,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:02:01,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:02:01,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:02:01,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:02:01,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:02:01,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:02:01,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:02:01,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:02:01,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 03:02:01,816 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:02:01,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:02:01,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:02:01,826 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:02:01,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:02:01,826 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:02:01,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 03:02:01,826 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:02:01,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:02:01,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 03:02:01,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 03:02:01,827 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:02:01,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 03:02:01,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 03:02:01,828 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 03:02:01,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:02:01,829 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:02:01,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:02:01,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:02:01,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:02:01,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:02:01,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:02:01,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:02:01,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:02:01,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:02:01,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:02:01,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:02:01,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:02:01,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:02:01,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:02:01,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:02:01,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:02:01,832 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/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 -> e13e8a6faae9db7b7c8fcdc2a4577173af3d914c [2019-11-26 03:02:01,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:02:01,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:02:01,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:02:01,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:02:01,993 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:02:01,994 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn3.c [2019-11-26 03:02:02,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/52c62ded5/b26556010a90445c82c36addb9c312e6/FLAGd54f5ca21 [2019-11-26 03:02:02,418 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:02:02,418 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/sv-benchmarks/c/array-fpi/ifeqn3.c [2019-11-26 03:02:02,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/52c62ded5/b26556010a90445c82c36addb9c312e6/FLAGd54f5ca21 [2019-11-26 03:02:02,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/52c62ded5/b26556010a90445c82c36addb9c312e6 [2019-11-26 03:02:02,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:02:02,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:02:02,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:02:02,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:02:02,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:02:02,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:02:02" (1/1) ... [2019-11-26 03:02:02,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414509e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:02, skipping insertion in model container [2019-11-26 03:02:02,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:02:02" (1/1) ... [2019-11-26 03:02:02,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:02:02,894 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:02:03,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:02:03,104 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:02:03,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:02:03,145 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:02:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03 WrapperNode [2019-11-26 03:02:03,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:02:03,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:02:03,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:02:03,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:02:03,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:02:03,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:02:03,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:02:03,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:02:03,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... [2019-11-26 03:02:03,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:02:03,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:02:03,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:02:03,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:02:03,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:02:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 03:02:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 03:02:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:02:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:02:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 03:02:03,670 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:02:03,670 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 03:02:03,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:02:03 BoogieIcfgContainer [2019-11-26 03:02:03,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:02:03,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:02:03,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:02:03,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:02:03,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:02:02" (1/3) ... [2019-11-26 03:02:03,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db23337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:02:03, skipping insertion in model container [2019-11-26 03:02:03,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:03" (2/3) ... [2019-11-26 03:02:03,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db23337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:02:03, skipping insertion in model container [2019-11-26 03:02:03,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:02:03" (3/3) ... [2019-11-26 03:02:03,680 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn3.c [2019-11-26 03:02:03,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:02:03,699 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 03:02:03,709 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 03:02:03,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:02:03,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:02:03,735 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:02:03,735 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:02:03,735 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:02:03,735 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:02:03,735 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:02:03,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:02:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 03:02:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 03:02:03,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:03,750 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:03,750 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:03,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1907558339, now seen corresponding path program 1 times [2019-11-26 03:02:03,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:02:03,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348939637] [2019-11-26 03:02:03,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:02:03,836 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 03:02:03,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647603416] [2019-11-26 03:02:03,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:03,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 03:02:03,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:03,959 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:03,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348939637] [2019-11-26 03:02:03,976 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 03:02:03,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647603416] [2019-11-26 03:02:03,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:03,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 03:02:03,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373870018] [2019-11-26 03:02:03,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:02:03,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:02:03,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:02:03,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:02:04,001 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-26 03:02:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:04,084 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2019-11-26 03:02:04,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:02:04,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 03:02:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:04,092 INFO L225 Difference]: With dead ends: 20 [2019-11-26 03:02:04,093 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 03:02:04,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:02:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 03:02:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 03:02:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 03:02:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-26 03:02:04,120 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-26 03:02:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:04,120 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-26 03:02:04,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:02:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-26 03:02:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 03:02:04,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:04,121 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:04,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:04,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:04,324 INFO L82 PathProgramCache]: Analyzing trace with hash 943394408, now seen corresponding path program 1 times [2019-11-26 03:02:04,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:02:04,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33780441] [2019-11-26 03:02:04,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:02:04,344 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 03:02:04,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899622124] [2019-11-26 03:02:04,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:04,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 03:02:04,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:04,408 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:04,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33780441] [2019-11-26 03:02:04,419 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 03:02:04,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899622124] [2019-11-26 03:02:04,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-26 03:02:04,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968231553] [2019-11-26 03:02:04,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:02:04,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:02:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:02:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:02:04,422 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2019-11-26 03:02:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:04,513 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-26 03:02:04,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:02:04,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 03:02:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:04,514 INFO L225 Difference]: With dead ends: 21 [2019-11-26 03:02:04,514 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 03:02:04,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:02:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 03:02:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-11-26 03:02:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 03:02:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 03:02:04,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-26 03:02:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:04,519 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 03:02:04,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:02:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 03:02:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 03:02:04,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:04,521 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:04,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:04,721 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:04,722 INFO L82 PathProgramCache]: Analyzing trace with hash -820589996, now seen corresponding path program 1 times [2019-11-26 03:02:04,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:02:04,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829567237] [2019-11-26 03:02:04,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:02:04,756 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 03:02:04,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850425785] [2019-11-26 03:02:04,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:04,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 03:02:04,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:04,843 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-26 03:02:04,843 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:04,850 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:04,850 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:04,851 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 03:02:04,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:04,879 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:04,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:04,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:04,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:04,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:04,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:05,030 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:05,030 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 62 [2019-11-26 03:02:05,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:05,039 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_2], 2=[v_arrayElimCell_1]} [2019-11-26 03:02:05,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:05,246 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 03:02:05,250 INFO L168 Benchmark]: Toolchain (without parser) took 2381.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -86.1 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:05,250 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:02:05,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:05,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:02:05,252 INFO L168 Benchmark]: Boogie Preprocessor took 35.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:02:05,252 INFO L168 Benchmark]: RCFGBuilder took 453.08 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: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:05,253 INFO L168 Benchmark]: TraceAbstraction took 1576.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.5 MB). Peak memory consumption was 79.5 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:05,255 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 453.08 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: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1576.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.5 MB). Peak memory consumption was 79.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 03:02:07,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:02:07,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:02:07,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:02:07,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:02:07,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:02:07,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:02:07,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:02:07,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:02:07,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:02:07,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:02:07,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:02:07,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:02:07,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:02:07,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:02:07,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:02:07,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:02:07,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:02:07,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:02:07,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:02:07,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:02:07,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:02:07,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:02:07,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:02:07,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:02:07,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:02:07,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:02:07,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:02:07,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:02:07,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:02:07,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:02:07,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:02:07,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:02:07,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:02:07,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:02:07,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:02:07,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:02:07,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:02:07,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:02:07,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:02:07,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:02:07,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 03:02:07,160 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:02:07,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:02:07,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:02:07,161 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:02:07,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:02:07,162 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:02:07,162 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:02:07,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:02:07,162 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:02:07,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:02:07,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:02:07,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:02:07,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:02:07,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:02:07,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:02:07,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:02:07,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 03:02:07,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 03:02:07,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 03:02:07,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:02:07,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:02:07,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 03:02:07,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:02:07,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:02:07,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 03:02:07,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:02:07,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:02:07,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:02:07,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:02:07,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:02:07,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:02:07,169 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 03:02:07,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 03:02:07,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:02:07,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:02:07,170 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/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 -> e13e8a6faae9db7b7c8fcdc2a4577173af3d914c [2019-11-26 03:02:07,465 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:02:07,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:02:07,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:02:07,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:02:07,481 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:02:07,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn3.c [2019-11-26 03:02:07,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/af5482ba1/49dfbe609be14ef7b847539957564e79/FLAG18e98db5a [2019-11-26 03:02:07,976 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:02:07,980 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/sv-benchmarks/c/array-fpi/ifeqn3.c [2019-11-26 03:02:07,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/af5482ba1/49dfbe609be14ef7b847539957564e79/FLAG18e98db5a [2019-11-26 03:02:08,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/data/af5482ba1/49dfbe609be14ef7b847539957564e79 [2019-11-26 03:02:08,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:02:08,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:02:08,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:02:08,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:02:08,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:02:08,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61942457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08, skipping insertion in model container [2019-11-26 03:02:08,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:02:08,441 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:02:08,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:02:08,633 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:02:08,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:02:08,671 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:02:08,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08 WrapperNode [2019-11-26 03:02:08,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:02:08,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:02:08,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:02:08,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:02:08,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:02:08,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:02:08,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:02:08,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:02:08,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... [2019-11-26 03:02:08,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:02:08,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:02:08,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:02:08,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:02:08,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:02:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-26 03:02:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 03:02:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:02:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:02:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-26 03:02:09,187 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:02:09,188 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 03:02:09,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:02:09 BoogieIcfgContainer [2019-11-26 03:02:09,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:02:09,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:02:09,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:02:09,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:02:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:02:08" (1/3) ... [2019-11-26 03:02:09,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16506473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:02:09, skipping insertion in model container [2019-11-26 03:02:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:02:08" (2/3) ... [2019-11-26 03:02:09,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16506473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:02:09, skipping insertion in model container [2019-11-26 03:02:09,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:02:09" (3/3) ... [2019-11-26 03:02:09,194 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn3.c [2019-11-26 03:02:09,201 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:02:09,205 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 03:02:09,212 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 03:02:09,230 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:02:09,230 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:02:09,230 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:02:09,230 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:02:09,231 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:02:09,231 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:02:09,231 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:02:09,231 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:02:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 03:02:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 03:02:09,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:09,246 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:09,246 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1201566748, now seen corresponding path program 1 times [2019-11-26 03:02:09,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:09,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1880408051] [2019-11-26 03:02:09,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:09,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 03:02:09,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:09,357 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:09,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1880408051] [2019-11-26 03:02:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:09,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 03:02:09,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884378129] [2019-11-26 03:02:09,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 03:02:09,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 03:02:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 03:02:09,381 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-26 03:02:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:09,393 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-26 03:02:09,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 03:02:09,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 03:02:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:09,402 INFO L225 Difference]: With dead ends: 36 [2019-11-26 03:02:09,402 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 03:02:09,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 03:02:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 03:02:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 03:02:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 03:02:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-26 03:02:09,431 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-26 03:02:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:09,431 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-26 03:02:09,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 03:02:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-26 03:02:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 03:02:09,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:09,433 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:09,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:09,634 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1920794649, now seen corresponding path program 1 times [2019-11-26 03:02:09,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:09,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1318372335] [2019-11-26 03:02:09,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:09,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 03:02:09,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:09,883 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:09,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1318372335] [2019-11-26 03:02:09,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:09,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 03:02:09,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835426098] [2019-11-26 03:02:09,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:02:09,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:02:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:02:09,908 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-26 03:02:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:10,057 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-26 03:02:10,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:02:10,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 03:02:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:10,063 INFO L225 Difference]: With dead ends: 35 [2019-11-26 03:02:10,063 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 03:02:10,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:02:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 03:02:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-26 03:02:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 03:02:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-26 03:02:10,068 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2019-11-26 03:02:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:10,069 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-26 03:02:10,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:02:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-26 03:02:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 03:02:10,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:10,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:10,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:10,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1948223762, now seen corresponding path program 1 times [2019-11-26 03:02:10,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:10,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1032022025] [2019-11-26 03:02:10,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/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 [2019-11-26 03:02:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:10,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 03:02:10,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:10,617 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:10,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032022025] [2019-11-26 03:02:10,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-26 03:02:10,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-11-26 03:02:10,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100955668] [2019-11-26 03:02:10,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 03:02:10,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:10,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 03:02:10,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2019-11-26 03:02:10,842 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 7 states. [2019-11-26 03:02:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:11,029 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-26 03:02:11,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:02:11,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-26 03:02:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:11,037 INFO L225 Difference]: With dead ends: 28 [2019-11-26 03:02:11,037 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 03:02:11,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2019-11-26 03:02:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 03:02:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-26 03:02:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 03:02:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-26 03:02:11,042 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-26 03:02:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:11,042 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-26 03:02:11,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 03:02:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-26 03:02:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 03:02:11,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:11,043 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:11,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:11,244 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:11,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1326513248, now seen corresponding path program 1 times [2019-11-26 03:02:11,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:11,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1289480495] [2019-11-26 03:02:11,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:11,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 03:02:11,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:11,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:11,548 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-26 03:02:11,549 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:11,566 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:11,566 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:11,567 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:24 [2019-11-26 03:02:11,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:11,651 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:12,236 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-26 03:02:12,391 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:12,392 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 76 [2019-11-26 03:02:12,417 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:12,495 INFO L343 Elim1Store]: treesize reduction 212, result has 19.7 percent of original size [2019-11-26 03:02:12,495 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 216 treesize of output 209 [2019-11-26 03:02:12,499 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:12,504 INFO L567 ElimStorePlain]: treesize reduction 221, result has 0.5 percent of original size [2019-11-26 03:02:12,505 INFO L464 ElimStorePlain]: Eliminatee v_arrayElimArr_1 vanished before elimination [2019-11-26 03:02:12,505 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:12,506 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:12,506 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:12,506 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:1 [2019-11-26 03:02:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:12,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1289480495] [2019-11-26 03:02:12,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:12,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-26 03:02:12,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804247764] [2019-11-26 03:02:12,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 03:02:12,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:12,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 03:02:12,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-26 03:02:12,510 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2019-11-26 03:02:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:13,965 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-26 03:02:13,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 03:02:13,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-26 03:02:13,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:13,973 INFO L225 Difference]: With dead ends: 39 [2019-11-26 03:02:13,973 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 03:02:13,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 03:02:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 03:02:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-26 03:02:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 03:02:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 03:02:13,980 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2019-11-26 03:02:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:13,980 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 03:02:13,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 03:02:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 03:02:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 03:02:13,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:13,981 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:14,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:14,183 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash 448494114, now seen corresponding path program 1 times [2019-11-26 03:02:14,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:14,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1571408939] [2019-11-26 03:02:14,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:14,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 03:02:14,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:14,242 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:14,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1571408939] [2019-11-26 03:02:14,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:02:14,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 03:02:14,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332548112] [2019-11-26 03:02:14,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 03:02:14,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:14,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 03:02:14,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 03:02:14,246 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 3 states. [2019-11-26 03:02:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:14,430 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-26 03:02:14,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 03:02:14,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-26 03:02:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:14,440 INFO L225 Difference]: With dead ends: 43 [2019-11-26 03:02:14,440 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 03:02:14,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 03:02:14,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 03:02:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-26 03:02:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 03:02:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-26 03:02:14,445 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2019-11-26 03:02:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:14,445 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-26 03:02:14,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 03:02:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-26 03:02:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 03:02:14,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:14,447 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:14,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:14,648 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash -579781034, now seen corresponding path program 1 times [2019-11-26 03:02:14,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:14,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [141869949] [2019-11-26 03:02:14,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:15,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 03:02:15,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:15,105 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:15,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [141869949] [2019-11-26 03:02:15,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948062257] [2019-11-26 03:02:15,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:15,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 03:02:15,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:15,474 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:02:15,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 03:02:15,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 14 [2019-11-26 03:02:15,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096954206] [2019-11-26 03:02:15,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 03:02:15,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:02:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 03:02:15,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-11-26 03:02:15,500 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 14 states. [2019-11-26 03:02:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:02:16,373 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2019-11-26 03:02:16,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 03:02:16,382 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2019-11-26 03:02:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:02:16,383 INFO L225 Difference]: With dead ends: 74 [2019-11-26 03:02:16,383 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 03:02:16,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 03:02:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 03:02:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-26 03:02:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 03:02:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-26 03:02:16,388 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-11-26 03:02:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:02:16,389 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-26 03:02:16,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 03:02:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-26 03:02:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 03:02:16,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:02:16,392 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:02:16,792 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:02:16,793 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:02:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:02:16,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1490131379, now seen corresponding path program 1 times [2019-11-26 03:02:16,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:02:16,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [511395088] [2019-11-26 03:02:16,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4d84fc7-f729-418f-93ab-f0e214a355d2/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:02:17,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-26 03:02:17,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:02:17,722 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-26 03:02:17,723 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,734 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:17,734 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,735 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-26 03:02:17,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,763 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-26 03:02:17,763 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,778 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:17,778 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,779 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:35 [2019-11-26 03:02:17,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,849 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:17,850 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,851 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,853 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,854 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:17,855 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,857 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 91 [2019-11-26 03:02:17,864 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,896 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:02:17,896 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:17,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:144, output treesize:103 [2019-11-26 03:02:17,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,992 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,998 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:17,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,002 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 125 [2019-11-26 03:02:18,004 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:18,086 INFO L567 ElimStorePlain]: treesize reduction 4, result has 96.9 percent of original size [2019-11-26 03:02:18,086 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:02:18,087 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:123 [2019-11-26 03:02:18,223 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,229 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,231 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,245 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,247 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,249 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,250 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,252 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,254 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,255 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,256 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,262 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,263 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 03:02:18,271 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,272 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 03:02:18,460 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-26 03:02:18,461 INFO L343 Elim1Store]: treesize reduction 16, result has 87.4 percent of original size [2019-11-26 03:02:18,462 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 278 treesize of output 317 [2019-11-26 03:02:18,466 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:02:18,584 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-11-26 03:02:18,585 INFO L567 ElimStorePlain]: treesize reduction 337, result has 45.6 percent of original size [2019-11-26 03:02:18,586 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 03:02:18,586 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:281, output treesize:283 [2019-11-26 03:02:18,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:02:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:02:18,963 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:02:31,896 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-11-26 03:02:40,315 WARN L192 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-11-26 03:02:45,966 WARN L192 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-11-26 03:02:46,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:02:46,179 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 03:02:46,190 INFO L168 Benchmark]: Toolchain (without parser) took 37778.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 961.8 MB in the beginning and 1.0 GB in the end (delta: -52.0 MB). Peak memory consumption was 135.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:46,191 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:02:46,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.87 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:46,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:46,195 INFO L168 Benchmark]: Boogie Preprocessor took 24.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:02:46,196 INFO L168 Benchmark]: RCFGBuilder took 390.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:46,197 INFO L168 Benchmark]: TraceAbstraction took 36998.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.1 MB). Peak memory consumption was 141.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:02:46,203 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.87 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 99.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 390.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 36998.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.1 MB). Peak memory consumption was 141.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...