./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifcomp.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_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifcomp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 b3dfd910050668807ddc877452b8c29b26f31b8e .......................................................................................................................................................................................................................................................................................................................................................................................... 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_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifcomp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 b3dfd910050668807ddc877452b8c29b26f31b8e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:30:44,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:30:44,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:30:44,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:30:44,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:30:44,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:30:44,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:30:44,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:30:44,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:30:44,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:30:44,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:30:44,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:30:44,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:30:44,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:30:44,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:30:44,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:30:44,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:30:44,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:30:44,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:30:44,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:30:44,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:30:44,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:30:44,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:30:44,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:30:44,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:30:44,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:30:44,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:30:44,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:30:44,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:30:44,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:30:44,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:30:44,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:30:44,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:30:44,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:30:44,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:30:44,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:30:44,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:30:44,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:30:44,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:30:44,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:30:44,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:30:44,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:30:44,964 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:30:44,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:30:44,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:30:44,965 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:30:44,965 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:30:44,966 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:30:44,967 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:30:44,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:30:44,967 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:30:44,967 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:30:44,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:30:44,968 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:30:44,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:30:44,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:30:44,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:30:44,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:30:44,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:30:44,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:30:44,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:30:44,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:44,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:30:44,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:30:44,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:30:44,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:30:44,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:30:44,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:30:44,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:30:44,972 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_f7adc821-09de-4605-9e1c-903eb5879d76/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 -> b3dfd910050668807ddc877452b8c29b26f31b8e [2019-11-26 02:30:45,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:30:45,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:30:45,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:30:45,141 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:30:45,145 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:30:45,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifcomp.c [2019-11-26 02:30:45,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/ecf20f7ca/dcd4a3f7d83f45c5850663dd0d2abf9b/FLAG58a5f8017 [2019-11-26 02:30:45,529 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:30:45,530 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/sv-benchmarks/c/array-fpi/ifcomp.c [2019-11-26 02:30:45,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/ecf20f7ca/dcd4a3f7d83f45c5850663dd0d2abf9b/FLAG58a5f8017 [2019-11-26 02:30:45,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/ecf20f7ca/dcd4a3f7d83f45c5850663dd0d2abf9b [2019-11-26 02:30:45,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:30:45,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:30:45,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:45,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:30:45,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:30:45,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:45" (1/1) ... [2019-11-26 02:30:45,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a08a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:45, skipping insertion in model container [2019-11-26 02:30:45,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:45" (1/1) ... [2019-11-26 02:30:45,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:30:45,972 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:30:46,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:46,243 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:30:46,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:46,283 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:30:46,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46 WrapperNode [2019-11-26 02:30:46,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:46,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:46,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:30:46,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:30:46,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:46,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:30:46,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:30:46,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:30:46,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:30:46,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:30:46,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:30:46,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:30:46,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:30:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:30:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:30:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:30:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:30:46,935 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:30:46,935 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:30:46,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:46 BoogieIcfgContainer [2019-11-26 02:30:46,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:30:46,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:30:46,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:30:46,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:30:46,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:30:45" (1/3) ... [2019-11-26 02:30:46,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:46, skipping insertion in model container [2019-11-26 02:30:46,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (2/3) ... [2019-11-26 02:30:46,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:46, skipping insertion in model container [2019-11-26 02:30:46,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:46" (3/3) ... [2019-11-26 02:30:46,944 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2019-11-26 02:30:46,953 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:30:46,959 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:30:46,969 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:30:46,990 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:30:46,990 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:30:46,991 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:30:46,991 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:30:46,991 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:30:46,991 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:30:46,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:30:46,991 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:30:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:30:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:30:47,010 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:47,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:47,012 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash 459542126, now seen corresponding path program 1 times [2019-11-26 02:30:47,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:47,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888998237] [2019-11-26 02:30:47,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:47,119 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:30:47,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599900201] [2019-11-26 02:30:47,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:47,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:30:47,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:47,219 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:47,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888998237] [2019-11-26 02:30:47,232 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:30:47,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599900201] [2019-11-26 02:30:47,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:47,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:30:47,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974754095] [2019-11-26 02:30:47,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:30:47,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:47,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:30:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:30:47,253 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-26 02:30:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:47,375 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2019-11-26 02:30:47,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:30:47,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:30:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:47,388 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:30:47,389 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:30:47,394 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:30:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:30:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:30:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:30:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-26 02:30:47,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2019-11-26 02:30:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:47,427 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-26 02:30:47,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:30:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-11-26 02:30:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:30:47,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:47,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:47,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:47,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash -265538495, now seen corresponding path program 1 times [2019-11-26 02:30:47,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:47,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333305046] [2019-11-26 02:30:47,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:47,685 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:30:47,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315979089] [2019-11-26 02:30:47,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:47,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:30:47,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:47,754 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 02:30:47,754 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:47,762 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 02:30:47,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333305046] [2019-11-26 02:30:47,763 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:30:47,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315979089] [2019-11-26 02:30:47,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:47,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-26 02:30:47,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61272416] [2019-11-26 02:30:47,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:30:47,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:30:47,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:30:47,766 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 5 states. [2019-11-26 02:30:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:47,893 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-26 02:30:47,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:30:47,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-26 02:30:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:47,895 INFO L225 Difference]: With dead ends: 24 [2019-11-26 02:30:47,895 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:30:47,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 02:30:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:30:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2019-11-26 02:30:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:30:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-26 02:30:47,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2019-11-26 02:30:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:47,900 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-26 02:30:47,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:30:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-26 02:30:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:30:47,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:47,901 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:48,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:48,101 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash 907483064, now seen corresponding path program 1 times [2019-11-26 02:30:48,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:48,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920304350] [2019-11-26 02:30:48,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:48,133 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:30:48,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793725394] [2019-11-26 02:30:48,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:48,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 02:30:48,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:48,237 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 02:30:48,237 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:30:48,245 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:30:48,246 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:30:48,246 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 02:30:48,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:30:48,272 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:48,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,625 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-26 02:30:48,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,678 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:30:48,678 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 02:30:48,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:48,689 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_1], 2=[v_arrayElimCell_2]} [2019-11-26 02:30:48,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:48,897 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 02:30:48,900 INFO L168 Benchmark]: Toolchain (without parser) took 2966.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -64.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:48,900 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:30:48,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:48,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.05 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 02:30:48,902 INFO L168 Benchmark]: Boogie Preprocessor took 23.54 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:48,903 INFO L168 Benchmark]: RCFGBuilder took 580.14 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:48,903 INFO L168 Benchmark]: TraceAbstraction took 1961.06 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: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:48,906 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.05 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 23.54 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 580.14 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1961.06 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: 86.8 MB). Peak memory consumption was 86.8 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 02:30:50,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:30:50,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:30:50,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:30:50,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:30:50,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:30:50,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:30:50,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:30:50,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:30:50,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:30:50,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:30:50,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:30:50,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:30:50,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:30:50,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:30:50,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:30:50,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:30:50,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:30:50,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:30:50,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:30:50,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:30:50,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:30:50,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:30:50,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:30:50,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:30:50,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:30:50,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:30:50,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:30:50,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:30:50,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:30:50,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:30:50,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:30:50,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:30:50,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:30:50,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:30:50,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:30:50,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:30:50,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:30:50,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:30:50,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:30:50,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:30:50,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:30:50,787 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:30:50,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:30:50,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:30:50,793 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:30:50,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:30:50,794 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:30:50,795 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:30:50,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:30:50,795 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:30:50,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:30:50,797 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:30:50,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:30:50,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:30:50,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:30:50,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:30:50,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:30:50,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:30:50,799 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:30:50,799 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:30:50,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:30:50,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:30:50,799 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:30:50,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:30:50,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:30:50,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:30:50,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:30:50,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:30:50,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:50,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:30:50,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:30:50,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:30:50,802 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:30:50,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:30:50,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:30:50,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:30:50,803 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_f7adc821-09de-4605-9e1c-903eb5879d76/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 -> b3dfd910050668807ddc877452b8c29b26f31b8e [2019-11-26 02:30:51,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:30:51,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:30:51,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:30:51,155 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:30:51,156 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:30:51,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifcomp.c [2019-11-26 02:30:51,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/7d5df6de1/aeaff57082d7442c9656c7bb0dad4fc6/FLAGb025a64ce [2019-11-26 02:30:51,592 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:30:51,596 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/sv-benchmarks/c/array-fpi/ifcomp.c [2019-11-26 02:30:51,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/7d5df6de1/aeaff57082d7442c9656c7bb0dad4fc6/FLAGb025a64ce [2019-11-26 02:30:52,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/data/7d5df6de1/aeaff57082d7442c9656c7bb0dad4fc6 [2019-11-26 02:30:52,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:30:52,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:30:52,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:52,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:30:52,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:30:52,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bbefd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52, skipping insertion in model container [2019-11-26 02:30:52,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:30:52,046 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:30:52,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:52,224 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:30:52,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:52,263 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:30:52,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52 WrapperNode [2019-11-26 02:30:52,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:52,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:52,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:30:52,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:30:52,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:52,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:30:52,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:30:52,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:30:52,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... [2019-11-26 02:30:52,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:30:52,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:30:52,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:30:52,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:30:52,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-26 02:30:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:30:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:30:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:30:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-26 02:30:52,887 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:30:52,887 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:30:52,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:52 BoogieIcfgContainer [2019-11-26 02:30:52,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:30:52,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:30:52,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:30:52,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:30:52,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:30:52" (1/3) ... [2019-11-26 02:30:52,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389d9184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:52, skipping insertion in model container [2019-11-26 02:30:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:52" (2/3) ... [2019-11-26 02:30:52,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389d9184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:52, skipping insertion in model container [2019-11-26 02:30:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:52" (3/3) ... [2019-11-26 02:30:52,895 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2019-11-26 02:30:52,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:30:52,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:30:52,918 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:30:52,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:30:52,939 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:30:52,939 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:30:52,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:30:52,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:30:52,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:30:52,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:30:52,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:30:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-26 02:30:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:30:52,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:52,959 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:52,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:52,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash 638964938, now seen corresponding path program 1 times [2019-11-26 02:30:52,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:52,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1276747860] [2019-11-26 02:30:52,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:53,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:30:53,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:53,080 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:53,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1276747860] [2019-11-26 02:30:53,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:53,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:30:53,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067196922] [2019-11-26 02:30:53,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:30:53,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:30:53,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:30:53,102 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-26 02:30:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:53,114 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2019-11-26 02:30:53,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:30:53,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-26 02:30:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:53,122 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:30:53,124 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:30:53,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 02:30:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:30:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-26 02:30:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-26 02:30:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-11-26 02:30:53,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2019-11-26 02:30:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:53,158 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-26 02:30:53,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:30:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2019-11-26 02:30:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:30:53,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:53,159 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:53,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:53,359 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -953872449, now seen corresponding path program 1 times [2019-11-26 02:30:53,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:53,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1653746610] [2019-11-26 02:30:53,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:53,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:30:53,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:53,690 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:53,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653746610] [2019-11-26 02:30:53,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:53,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:30:53,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612703925] [2019-11-26 02:30:53,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:30:53,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:53,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:30:53,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:30:53,719 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 4 states. [2019-11-26 02:30:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:53,956 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-11-26 02:30:53,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:30:53,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-26 02:30:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:53,958 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:30:53,958 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:30:53,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:30:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:30:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-11-26 02:30:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:30:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-11-26 02:30:53,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-11-26 02:30:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:53,965 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-11-26 02:30:53,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:30:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-11-26 02:30:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:30:53,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:53,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:54,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:54,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 361112916, now seen corresponding path program 1 times [2019-11-26 02:30:54,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:54,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2047182469] [2019-11-26 02:30:54,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 02:30:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:54,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:30:54,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:54,559 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 02:30:54,559 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:54,776 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 02:30:54,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2047182469] [2019-11-26 02:30:54,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:30:54,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-11-26 02:30:54,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916157164] [2019-11-26 02:30:54,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:30:54,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:54,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:30:54,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:30:54,779 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 7 states. [2019-11-26 02:30:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:55,066 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2019-11-26 02:30:55,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:30:55,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-26 02:30:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:55,085 INFO L225 Difference]: With dead ends: 37 [2019-11-26 02:30:55,086 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:30:55,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:30:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:30:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-26 02:30:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:30:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-11-26 02:30:55,091 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 15 [2019-11-26 02:30:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:55,092 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-11-26 02:30:55,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:30:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2019-11-26 02:30:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:30:55,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:55,093 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:55,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:55,294 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:55,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1034367045, now seen corresponding path program 1 times [2019-11-26 02:30:55,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:55,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1352235415] [2019-11-26 02:30:55,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:55,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:30:55,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:55,678 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:30:55,691 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 29 treesize of output 21 [2019-11-26 02:30:55,691 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:30:55,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:30:55,705 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:30:55,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:24 [2019-11-26 02:30:55,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:30:55,772 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:57,065 WARN L192 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-26 02:30:57,347 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:30:57,348 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 74 treesize of output 72 [2019-11-26 02:30:57,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:30:57,444 INFO L343 Elim1Store]: treesize reduction 212, result has 19.7 percent of original size [2019-11-26 02:30:57,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 196 treesize of output 189 [2019-11-26 02:30:57,447 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:30:57,467 INFO L567 ElimStorePlain]: treesize reduction 201, result has 0.5 percent of original size [2019-11-26 02:30:57,468 INFO L464 ElimStorePlain]: Eliminatee v_arrayElimArr_1 vanished before elimination [2019-11-26 02:30:57,468 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 02:30:57,469 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:30:57,469 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 02:30:57,469 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:1 [2019-11-26 02:30:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:30:57,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1352235415] [2019-11-26 02:30:57,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:57,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-26 02:30:57,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122390460] [2019-11-26 02:30:57,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:30:57,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:30:57,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:30:57,474 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 9 states. [2019-11-26 02:31:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:00,823 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-26 02:31:00,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:31:00,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-11-26 02:31:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:00,839 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:31:00,839 INFO L226 Difference]: Without dead ends: 42 [2019-11-26 02:31:00,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:31:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-26 02:31:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2019-11-26 02:31:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 02:31:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2019-11-26 02:31:00,846 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 21 [2019-11-26 02:31:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:00,846 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2019-11-26 02:31:00,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:31:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2019-11-26 02:31:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:31:00,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:00,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:01,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:01,049 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:01,049 INFO L82 PathProgramCache]: Analyzing trace with hash 740640317, now seen corresponding path program 1 times [2019-11-26 02:31:01,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:01,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [412406769] [2019-11-26 02:31:01,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 02:31:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:31:01,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:31:01,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:01,111 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:01,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [412406769] [2019-11-26 02:31:01,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:31:01,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:31:01,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363259197] [2019-11-26 02:31:01,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:31:01,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:01,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:31:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:31:01,116 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2019-11-26 02:31:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:01,291 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-26 02:31:01,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:31:01,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-26 02:31:01,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:01,308 INFO L225 Difference]: With dead ends: 55 [2019-11-26 02:31:01,308 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:31:01,309 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:31:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:31:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-26 02:31:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:31:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-11-26 02:31:01,314 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 21 [2019-11-26 02:31:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:01,314 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-26 02:31:01,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:31:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-11-26 02:31:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:31:01,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:01,316 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:01,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:01,518 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1318744497, now seen corresponding path program 1 times [2019-11-26 02:31:01,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:01,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1777707534] [2019-11-26 02:31:01,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:31:02,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:31:02,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:02,151 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:02,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1777707534] [2019-11-26 02:31:02,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815413830] [2019-11-26 02:31:02,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 02:31:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:31:02,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:31:02,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:02,571 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:31:02,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:02,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 14 [2019-11-26 02:31:02,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729646022] [2019-11-26 02:31:02,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:31:02,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:31:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:31:02,585 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 14 states. [2019-11-26 02:31:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:03,739 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2019-11-26 02:31:03,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:31:03,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2019-11-26 02:31:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:03,754 INFO L225 Difference]: With dead ends: 98 [2019-11-26 02:31:03,754 INFO L226 Difference]: Without dead ends: 42 [2019-11-26 02:31:03,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:31:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-26 02:31:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-11-26 02:31:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-26 02:31:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-26 02:31:03,762 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 25 [2019-11-26 02:31:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:03,762 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-26 02:31:03,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:31:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-26 02:31:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:31:03,764 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:03,764 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:04,171 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 02:31:04,171 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 180948411, now seen corresponding path program 1 times [2019-11-26 02:31:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:04,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1428806370] [2019-11-26 02:31:04,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7adc821-09de-4605-9e1c-903eb5879d76/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 02:31:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:31:06,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-26 02:31:06,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:06,763 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 14 treesize of output 12 [2019-11-26 02:31:06,763 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:31:06,777 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:31:06,777 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:31:06,777 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-11-26 02:31:06,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,820 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 02:31:06,820 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:31:06,836 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:31:06,836 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:31:06,836 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:38 [2019-11-26 02:31:06,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,919 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:06,920 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,925 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:06,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,929 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,936 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,939 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,948 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:06,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:06,952 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:06,966 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:31:06,967 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 192 treesize of output 143 [2019-11-26 02:31:06,969 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:31:07,086 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-11-26 02:31:07,087 INFO L567 ElimStorePlain]: treesize reduction 61, result has 75.4 percent of original size [2019-11-26 02:31:07,088 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 02:31:07,088 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:202, output treesize:187 [2019-11-26 02:31:07,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,337 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,339 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,340 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,341 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,343 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,346 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,347 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,355 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,356 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,359 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,430 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:31:07,431 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 205 treesize of output 263 [2019-11-26 02:31:07,433 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:31:07,565 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-11-26 02:31:07,566 INFO L567 ElimStorePlain]: treesize reduction 100, result has 64.4 percent of original size [2019-11-26 02:31:07,567 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 02:31:07,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:219, output treesize:181 [2019-11-26 02:31:07,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,922 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,925 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,935 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,937 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,940 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,942 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,943 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,944 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,945 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,946 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,952 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,954 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,955 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,959 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,960 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,961 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:31:07,962 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,963 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:07,964 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:31:08,295 WARN L192 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-26 02:31:08,295 INFO L343 Elim1Store]: treesize reduction 32, result has 81.7 percent of original size [2019-11-26 02:31:08,296 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 47 case distinctions, treesize of input 336 treesize of output 385 [2019-11-26 02:31:08,302 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:31:08,464 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-11-26 02:31:08,465 INFO L567 ElimStorePlain]: treesize reduction 392, result has 43.0 percent of original size [2019-11-26 02:31:08,466 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:31:08,467 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:339, output treesize:296 [2019-11-26 02:31:08,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:31:08,874 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:10,813 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-26 02:31:12,252 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-11-26 02:31:15,618 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-26 02:31:25,397 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-26 02:31:27,274 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-26 02:31:29,326 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~a~0.base (_ BitVec 32))) (let ((.cse0 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base)) (.cse16 (bvneg ((_ sign_extend 32) (_ bv1 32))))) (let ((.cse1 (bvmul ((_ extract 31 0) c_ULTIMATE.start_main_~i~0) (_ bv8 32))) (.cse2 (let ((.cse18 (bvmul ((_ extract 31 0) (bvadd c_ULTIMATE.start_main_~i~0 .cse16)) (_ bv8 32)))) (bvadd (let ((.cse17 (select |c_#memory_int| ULTIMATE.start_main_~a~0.base))) (concat (select .cse17 (bvadd .cse18 c_ULTIMATE.start_main_~a~0.offset (_ bv4 32))) (select .cse17 (bvadd .cse18 c_ULTIMATE.start_main_~a~0.offset)))) (concat (select .cse0 (bvadd .cse18 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32))) (select .cse0 (bvadd .cse18 c_ULTIMATE.start_main_~b~0.offset))))))) (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base (store .cse0 (bvadd .cse1 c_ULTIMATE.start_main_~b~0.offset) ((_ extract 31 0) .cse2))))) (let ((.cse11 (select .cse3 c_ULTIMATE.start_main_~c~0.base)) (.cse12 ((_ sign_extend 32) (_ bv0 32)))) (let ((.cse8 (store .cse11 c_ULTIMATE.start_main_~c~0.offset ((_ extract 31 0) .cse12)))) (let ((.cse10 (store .cse3 c_ULTIMATE.start_main_~c~0.base .cse8))) (let ((.cse4 (bvadd .cse12 (_ bv1 64))) (.cse9 (let ((.cse14 (bvmul ((_ extract 31 0) (bvadd .cse12 .cse16 (_ bv1 64))) (_ bv8 32)))) (bvadd (concat (select .cse8 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse14 (_ bv4 32))) (select .cse8 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse14))) (let ((.cse15 (select .cse10 c_ULTIMATE.start_main_~b~0.base))) (concat (select .cse15 (bvadd .cse14 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32))) (select .cse15 (bvadd .cse14 c_ULTIMATE.start_main_~b~0.offset)))))))) (let ((.cse7 ((_ extract 31 0) .cse9)) (.cse13 (bvmul ((_ extract 31 0) .cse4) (_ bv8 32)))) (let ((.cse6 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse13 (_ bv4 32))) (.cse5 (store .cse8 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse13) .cse7))) (or (not (= (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base (store .cse0 (bvadd .cse1 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32)) ((_ extract 63 32) .cse2))) .cse3)) (= (bvmul (bvmul .cse4 .cse4) .cse4) (concat (select .cse5 .cse6) .cse7)) (not (= (store .cse3 c_ULTIMATE.start_main_~c~0.base (store .cse8 .cse6 ((_ extract 63 32) .cse9))) (store .cse3 c_ULTIMATE.start_main_~c~0.base .cse5))) (not (= .cse10 (store .cse3 c_ULTIMATE.start_main_~c~0.base (store .cse11 (bvadd c_ULTIMATE.start_main_~c~0.offset (_ bv4 32)) ((_ extract 63 32) .cse12)))))))))))))))) is different from false [2019-11-26 02:31:31,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~a~0.base (_ BitVec 32))) (let ((.cse8 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base)) (.cse16 (bvneg ((_ sign_extend 32) (_ bv1 32))))) (let ((.cse9 (bvmul ((_ extract 31 0) (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 64))) (_ bv8 32))) (.cse10 (let ((.cse17 (bvmul ((_ extract 31 0) (bvadd c_ULTIMATE.start_main_~i~0 .cse16 (_ bv1 64))) (_ bv8 32)))) (bvadd (concat (select .cse8 (bvadd .cse17 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32))) (select .cse8 (bvadd .cse17 c_ULTIMATE.start_main_~b~0.offset))) (let ((.cse18 (select |c_#memory_int| ULTIMATE.start_main_~a~0.base))) (concat (select .cse18 (bvadd .cse17 c_ULTIMATE.start_main_~a~0.offset (_ bv4 32))) (select .cse18 (bvadd .cse17 c_ULTIMATE.start_main_~a~0.offset)))))))) (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base (store .cse8 (bvadd .cse9 c_ULTIMATE.start_main_~b~0.offset) ((_ extract 31 0) .cse10))))) (let ((.cse2 (select .cse1 c_ULTIMATE.start_main_~c~0.base)) (.cse3 ((_ sign_extend 32) (_ bv0 32)))) (let ((.cse11 (store .cse2 c_ULTIMATE.start_main_~c~0.offset ((_ extract 31 0) .cse3)))) (let ((.cse0 (store .cse1 c_ULTIMATE.start_main_~c~0.base .cse11))) (let ((.cse12 (let ((.cse14 (bvmul ((_ extract 31 0) (bvadd .cse3 .cse16 (_ bv1 64))) (_ bv8 32)))) (bvadd (concat (select .cse11 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse14 (_ bv4 32))) (select .cse11 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse14))) (let ((.cse15 (select .cse0 c_ULTIMATE.start_main_~b~0.base))) (concat (select .cse15 (bvadd .cse14 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32))) (select .cse15 (bvadd .cse14 c_ULTIMATE.start_main_~b~0.offset))))))) (.cse4 (bvadd .cse3 (_ bv1 64)))) (let ((.cse13 (bvmul ((_ extract 31 0) .cse4) (_ bv8 32))) (.cse7 ((_ extract 31 0) .cse12))) (let ((.cse5 (store .cse11 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse13) .cse7)) (.cse6 (bvadd c_ULTIMATE.start_main_~c~0.offset .cse13 (_ bv4 32)))) (or (not (= .cse0 (store .cse1 c_ULTIMATE.start_main_~c~0.base (store .cse2 (bvadd c_ULTIMATE.start_main_~c~0.offset (_ bv4 32)) ((_ extract 63 32) .cse3))))) (= (bvmul (bvmul .cse4 .cse4) .cse4) (concat (select .cse5 .cse6) .cse7)) (not (= .cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base (store .cse8 (bvadd .cse9 c_ULTIMATE.start_main_~b~0.offset (_ bv4 32)) ((_ extract 63 32) .cse10))))) (not (= (store .cse1 c_ULTIMATE.start_main_~c~0.base .cse5) (store .cse1 c_ULTIMATE.start_main_~c~0.base (store .cse11 .cse6 ((_ extract 63 32) .cse12)))))))))))))))) is different from false [2019-11-26 02:31:31,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:31,735 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:31:31,738 INFO L168 Benchmark]: Toolchain (without parser) took 39722.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 957.8 MB in the beginning and 933.1 MB in the end (delta: 24.6 MB). Peak memory consumption was 197.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:31,739 INFO L168 Benchmark]: CDTParser took 0.18 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 02:31:31,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.76 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:31,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:31,740 INFO L168 Benchmark]: Boogie Preprocessor took 30.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:31,741 INFO L168 Benchmark]: RCFGBuilder took 506.18 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:31,741 INFO L168 Benchmark]: TraceAbstraction took 38848.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 933.1 MB in the end (delta: 126.7 MB). Peak memory consumption was 198.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:31,744 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.76 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 506.18 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 38848.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 933.1 MB in the end (delta: 126.7 MB). Peak memory consumption was 198.5 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...