./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn1.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_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 48a3829176350b48040822096b4dea2dbcf18d92 ......................................................................................................................................................................................................................................................................................................................................................................................... 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_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 48a3829176350b48040822096b4dea2dbcf18d92 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:47,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:26:47,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:26:47,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:26:47,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:26:47,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:26:47,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:26:47,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:26:47,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:26:47,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:26:47,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:26:47,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:26:47,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:26:47,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:26:47,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:26:47,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:26:47,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:26:47,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:26:47,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:26:47,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:26:47,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:26:47,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:26:47,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:26:47,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:26:47,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:26:47,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:26:47,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:26:47,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:26:47,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:26:47,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:26:47,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:26:47,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:26:47,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:26:47,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:26:47,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:26:47,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:26:47,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:26:47,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:26:47,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:26:47,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:26:47,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:26:47,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:26:47,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:26:47,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:26:47,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:26:47,961 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:26:47,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:26:47,962 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:26:47,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:26:47,962 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:26:47,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:26:47,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:26:47,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:26:47,963 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:26:47,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:26:47,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:26:47,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:26:47,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:26:47,965 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:26:47,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:26:47,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:26:47,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:26:47,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:26:47,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:26:47,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:26:47,967 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:26:47,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:26:47,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:26:47,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:26:47,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:26:47,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:26:47,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:26:47,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:26:47,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:26:47,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:26:47,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:26:47,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:26:47,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:26:47,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:26:47,970 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_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 -> 48a3829176350b48040822096b4dea2dbcf18d92 [2019-11-26 02:26:48,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:26:48,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:26:48,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:26:48,150 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:26:48,150 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:26:48,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn1.c [2019-11-26 02:26:48,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/bbda7f36b/af51ed9e810b410e9d243813127b16ff/FLAG4ee094e06 [2019-11-26 02:26:48,587 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:26:48,588 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/sv-benchmarks/c/array-fpi/ifeqn1.c [2019-11-26 02:26:48,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/bbda7f36b/af51ed9e810b410e9d243813127b16ff/FLAG4ee094e06 [2019-11-26 02:26:48,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/bbda7f36b/af51ed9e810b410e9d243813127b16ff [2019-11-26 02:26:49,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:26:49,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:26:49,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:49,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:26:49,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:26:49,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:48" (1/1) ... [2019-11-26 02:26:49,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396fe1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49, skipping insertion in model container [2019-11-26 02:26:49,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:48" (1/1) ... [2019-11-26 02:26:49,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:26:49,041 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:26:49,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:49,315 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:26:49,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:49,346 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:26:49,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49 WrapperNode [2019-11-26 02:26:49,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:49,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:49,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:26:49,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:26:49,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:49,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:26:49,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:26:49,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:26:49,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... [2019-11-26 02:26:49,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:26:49,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:26:49,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:26:49,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:26:49,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:26:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:26:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:26:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:26:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:26:49,978 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:26:49,979 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:26:49,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:49 BoogieIcfgContainer [2019-11-26 02:26:49,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:26:49,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:26:49,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:26:49,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:26:49,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:26:48" (1/3) ... [2019-11-26 02:26:49,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:49, skipping insertion in model container [2019-11-26 02:26:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:49" (2/3) ... [2019-11-26 02:26:49,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:49, skipping insertion in model container [2019-11-26 02:26:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:49" (3/3) ... [2019-11-26 02:26:49,988 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn1.c [2019-11-26 02:26:49,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:26:50,003 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:26:50,014 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:26:50,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:26:50,035 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:26:50,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:26:50,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:26:50,036 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:26:50,036 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:26:50,036 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:26:50,036 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:26:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:26:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:26:50,054 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:50,055 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:50,055 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1907558339, now seen corresponding path program 1 times [2019-11-26 02:26:50,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:50,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188850351] [2019-11-26 02:26:50,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:50,157 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:26:50,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859586318] [2019-11-26 02:26:50,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:50,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:26:50,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:50,263 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 02:26:50,263 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:50,276 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 02:26:50,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188850351] [2019-11-26 02:26:50,277 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:26:50,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859586318] [2019-11-26 02:26:50,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:50,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:26:50,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70355402] [2019-11-26 02:26:50,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:26:50,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:50,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:26:50,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:26:50,301 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-26 02:26:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:50,352 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2019-11-26 02:26:50,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:26:50,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:26:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:50,362 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:26:50,363 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:26:50,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:26:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:26:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:26:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:26:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-26 02:26:50,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-26 02:26:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:50,402 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-26 02:26:50,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:26:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-26 02:26:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:26:50,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:50,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:50,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:50,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:50,610 INFO L82 PathProgramCache]: Analyzing trace with hash 943394408, now seen corresponding path program 1 times [2019-11-26 02:26:50,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:50,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751433750] [2019-11-26 02:26:50,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:50,631 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:26:50,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116427296] [2019-11-26 02:26:50,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:50,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:26:50,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:50,714 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 02:26:50,715 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:50,746 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 02:26:50,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751433750] [2019-11-26 02:26:50,746 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:26:50,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116427296] [2019-11-26 02:26:50,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:50,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-26 02:26:50,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507891872] [2019-11-26 02:26:50,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:26:50,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:50,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:26:50,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:26:50,749 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2019-11-26 02:26:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:50,808 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-26 02:26:50,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:26:50,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:26:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:50,810 INFO L225 Difference]: With dead ends: 21 [2019-11-26 02:26:50,810 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:26:50,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:26:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:26:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-11-26 02:26:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:26:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 02:26:50,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-26 02:26:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:50,814 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 02:26:50,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:26:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 02:26:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:26:50,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:50,815 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:51,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:51,017 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:51,018 INFO L82 PathProgramCache]: Analyzing trace with hash -820589996, now seen corresponding path program 1 times [2019-11-26 02:26:51,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:51,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368075443] [2019-11-26 02:26:51,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:51,053 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:26:51,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938441625] [2019-11-26 02:26:51,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:51,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 02:26:51,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:51,161 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 02:26:51,161 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:26:51,165 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:26:51,165 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:26:51,165 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-26 02:26:51,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:26:51,213 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:51,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,377 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:26:51,377 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 02:26:51,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:51,388 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_2], 2=[v_arrayElimCell_1]} [2019-11-26 02:26:51,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:51,597 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 02:26:51,601 INFO L168 Benchmark]: Toolchain (without parser) took 2598.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 951.5 MB in the beginning and 1.0 GB in the end (delta: -49.7 MB). Peak memory consumption was 82.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:51,601 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:26:51,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:51,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.79 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 02:26:51,603 INFO L168 Benchmark]: Boogie Preprocessor took 31.60 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 02:26:51,603 INFO L168 Benchmark]: RCFGBuilder took 564.58 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:51,604 INFO L168 Benchmark]: TraceAbstraction took 1618.07 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: 83.4 MB). Peak memory consumption was 83.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:51,606 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.79 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 31.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 564.58 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1618.07 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: 83.4 MB). Peak memory consumption was 83.4 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 02:26:53,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:26:53,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:26:53,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:26:53,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:26:53,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:26:53,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:26:53,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:26:53,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:26:53,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:26:53,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:26:53,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:26:53,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:26:53,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:26:53,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:26:53,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:26:53,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:26:53,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:26:53,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:26:53,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:26:53,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:26:53,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:26:53,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:26:53,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:26:53,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:26:53,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:26:53,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:26:53,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:26:53,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:26:53,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:26:53,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:26:53,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:26:53,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:26:53,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:26:53,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:26:53,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:26:53,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:26:53,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:26:53,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:26:53,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:26:53,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:26:53,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:26:53,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:26:53,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:26:53,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:26:53,458 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:26:53,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:26:53,458 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:26:53,458 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:26:53,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:26:53,459 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:26:53,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:26:53,460 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:26:53,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:26:53,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:26:53,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:26:53,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:26:53,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:26:53,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:26:53,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:26:53,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:26:53,462 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:26:53,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:26:53,462 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:26:53,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:26:53,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:26:53,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:26:53,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:26:53,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:26:53,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:26:53,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:26:53,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:26:53,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:26:53,465 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:26:53,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:26:53,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:26:53,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:26:53,466 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_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 -> 48a3829176350b48040822096b4dea2dbcf18d92 [2019-11-26 02:26:53,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:26:53,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:26:53,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:26:53,745 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:26:53,745 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:26:53,746 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn1.c [2019-11-26 02:26:53,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/f83c3f803/71489d5b0ddc40fc9a63e44eee920c60/FLAGe4480f1cb [2019-11-26 02:26:54,188 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:26:54,188 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/sv-benchmarks/c/array-fpi/ifeqn1.c [2019-11-26 02:26:54,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/f83c3f803/71489d5b0ddc40fc9a63e44eee920c60/FLAGe4480f1cb [2019-11-26 02:26:54,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/bin/utaipan/data/f83c3f803/71489d5b0ddc40fc9a63e44eee920c60 [2019-11-26 02:26:54,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:26:54,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:26:54,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:54,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:26:54,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:26:54,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3e2dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54, skipping insertion in model container [2019-11-26 02:26:54,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:26:54,675 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:26:54,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:54,862 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:26:54,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:54,905 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:26:54,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54 WrapperNode [2019-11-26 02:26:54,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:54,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:54,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:26:54,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:26:54,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:54,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:26:54,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:26:54,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:26:54,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:54,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:55,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:55,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:55,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... [2019-11-26 02:26:55,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:26:55,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:26:55,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:26:55,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:26:55,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-26 02:26:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:26:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:26:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:26:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-26 02:26:55,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:26:55,374 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:26:55,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:55 BoogieIcfgContainer [2019-11-26 02:26:55,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:26:55,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:26:55,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:26:55,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:26:55,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:26:54" (1/3) ... [2019-11-26 02:26:55,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a63a627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:55, skipping insertion in model container [2019-11-26 02:26:55,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:54" (2/3) ... [2019-11-26 02:26:55,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a63a627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:55, skipping insertion in model container [2019-11-26 02:26:55,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:55" (3/3) ... [2019-11-26 02:26:55,381 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn1.c [2019-11-26 02:26:55,388 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:26:55,393 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:26:55,403 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:26:55,419 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:26:55,419 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:26:55,420 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:26:55,420 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:26:55,420 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:26:55,420 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:26:55,420 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:26:55,420 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:26:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 02:26:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:26:55,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:55,437 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:55,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1201566748, now seen corresponding path program 1 times [2019-11-26 02:26:55,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:26:55,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [662294821] [2019-11-26 02:26:55,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:55,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:26:55,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:55,561 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 02:26:55,562 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:55,567 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 02:26:55,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [662294821] [2019-11-26 02:26:55,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:55,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:26:55,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005996867] [2019-11-26 02:26:55,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:26:55,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:26:55,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:26:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:26:55,587 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-26 02:26:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:55,601 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-26 02:26:55,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:26:55,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:26:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:55,610 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:26:55,611 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:26:55,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:26:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:26:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:26:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:26:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-26 02:26:55,639 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-26 02:26:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:55,639 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-26 02:26:55,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:26:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-26 02:26:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:26:55,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:55,640 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:55,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:26:55,841 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:55,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1920794649, now seen corresponding path program 1 times [2019-11-26 02:26:55,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:26:55,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [287752064] [2019-11-26 02:26:55,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:56,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:26:56,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:56,033 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 02:26:56,033 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:56,060 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 02:26:56,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [287752064] [2019-11-26 02:26:56,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:56,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:26:56,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346077011] [2019-11-26 02:26:56,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:26:56,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:26:56,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:26:56,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:26:56,063 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-26 02:26:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:56,178 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-26 02:26:56,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:26:56,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:26:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:56,182 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:26:56,182 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:26:56,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:26:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:26:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-26 02:26:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:26:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-26 02:26:56,187 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2019-11-26 02:26:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:56,188 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-26 02:26:56,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:26:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-26 02:26:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:26:56,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:56,189 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:56,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:26:56,390 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:56,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1948223762, now seen corresponding path program 1 times [2019-11-26 02:26:56,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:26:56,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1850617454] [2019-11-26 02:26:56,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:56,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:26:56,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:56,680 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 02:26:56,680 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:56,881 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 02:26:56,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1850617454] [2019-11-26 02:26:56,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:26:56,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-11-26 02:26:56,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909784504] [2019-11-26 02:26:56,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:26:56,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:26:56,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:26:56,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:26:56,883 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 7 states. [2019-11-26 02:26:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:57,054 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-26 02:26:57,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:26:57,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-26 02:26:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:57,063 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:26:57,063 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:26:57,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 02:26:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:26:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-26 02:26:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:26:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-26 02:26:57,068 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-26 02:26:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:57,069 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-26 02:26:57,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:26:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-26 02:26:57,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:26:57,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:57,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:57,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:26:57,271 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:57,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1326513248, now seen corresponding path program 1 times [2019-11-26 02:26:57,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:26:57,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [807154756] [2019-11-26 02:26:57,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:57,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:26:57,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:57,525 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:26:57,533 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-26 02:26:57,533 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:26:57,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:26:57,549 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:26:57,550 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:24 [2019-11-26 02:26:57,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:26:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:26:57,636 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:58,316 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:26:58,317 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 72 treesize of output 70 [2019-11-26 02:26:58,335 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:26:58,403 INFO L343 Elim1Store]: treesize reduction 212, result has 19.7 percent of original size [2019-11-26 02:26:58,404 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 192 treesize of output 185 [2019-11-26 02:26:58,406 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:26:58,416 INFO L567 ElimStorePlain]: treesize reduction 197, result has 0.5 percent of original size [2019-11-26 02:26:58,417 INFO L464 ElimStorePlain]: Eliminatee v_arrayElimArr_1 vanished before elimination [2019-11-26 02:26:58,417 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 02:26:58,418 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:26:58,418 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 02:26:58,419 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:1 [2019-11-26 02:26:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:26:58,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807154756] [2019-11-26 02:26:58,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:58,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-26 02:26:58,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045160110] [2019-11-26 02:26:58,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:26:58,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:26:58,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:26:58,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:26:58,422 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2019-11-26 02:26:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:59,654 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-26 02:26:59,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:26:59,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-26 02:26:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:59,662 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:26:59,662 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 02:26:59,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:26:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 02:26:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-26 02:26:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:26:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 02:26:59,669 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2019-11-26 02:26:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:59,669 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 02:26:59,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:26:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 02:26:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:26:59,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:59,671 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:59,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:26:59,872 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash 448494114, now seen corresponding path program 1 times [2019-11-26 02:26:59,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:26:59,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1610165] [2019-11-26 02:26:59,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:26:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:59,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:26:59,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:26:59,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:26:59,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1610165] [2019-11-26 02:26:59,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:59,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:26:59,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249293459] [2019-11-26 02:26:59,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:26:59,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:26:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:26:59,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:26:59,933 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 3 states. [2019-11-26 02:27:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:27:00,065 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-26 02:27:00,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:27:00,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-26 02:27:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:27:00,073 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:27:00,074 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:27:00,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:27:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:27:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-26 02:27:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:27:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-26 02:27:00,079 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2019-11-26 02:27:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:27:00,079 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-26 02:27:00,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:27:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-26 02:27:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:27:00,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:27:00,080 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:27:00,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:27:00,282 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:27:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:27:00,282 INFO L82 PathProgramCache]: Analyzing trace with hash -579781034, now seen corresponding path program 1 times [2019-11-26 02:27:00,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:27:00,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1006548029] [2019-11-26 02:27:00,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:27:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:27:00,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:27:00,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:27:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:27:00,652 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:27:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:27:00,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1006548029] [2019-11-26 02:27:00,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749657531] [2019-11-26 02:27:00,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:27:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:27:00,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:27:00,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:27:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:27:01,026 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:27:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:27:01,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:27:01,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 14 [2019-11-26 02:27:01,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244005109] [2019-11-26 02:27:01,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:27:01,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:27:01,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:27:01,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:27:01,039 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 14 states. [2019-11-26 02:27:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:27:01,821 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2019-11-26 02:27:01,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:27:01,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2019-11-26 02:27:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:27:01,831 INFO L225 Difference]: With dead ends: 74 [2019-11-26 02:27:01,831 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:27:01,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:27:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:27:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-26 02:27:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:27:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-26 02:27:01,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-11-26 02:27:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:27:01,836 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-26 02:27:01,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:27:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-26 02:27:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:27:01,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:27:01,839 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:27:02,244 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 02:27:02,245 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:27:02,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:27:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1490131379, now seen corresponding path program 1 times [2019-11-26 02:27:02,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:27:02,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1491163237] [2019-11-26 02:27:02,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fa2710a-28ba-4572-a9a2-79fbb22463d6/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 02:27:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:27:02,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-26 02:27:02,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:27:02,985 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-26 02:27:02,985 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:27:02,994 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:27:02,994 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:27:02,994 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-26 02:27:03,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,024 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,026 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 02:27:03,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,042 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:27:03,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,043 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:35 [2019-11-26 02:27:03,117 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,118 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,120 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,121 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,123 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,123 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,125 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,126 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,128 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,130 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 91 [2019-11-26 02:27:03,132 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,170 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:27:03,171 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:144, output treesize:157 [2019-11-26 02:27:03,281 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,293 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 117 [2019-11-26 02:27:03,295 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,389 INFO L567 ElimStorePlain]: treesize reduction 4, result has 97.4 percent of original size [2019-11-26 02:27:03,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,389 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:189, output treesize:149 [2019-11-26 02:27:03,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,545 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,548 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,555 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,560 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,561 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,566 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,570 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,575 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,576 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,580 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:27:03,583 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,591 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:27:03,750 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-26 02:27:03,751 INFO L343 Elim1Store]: treesize reduction 16, result has 87.4 percent of original size [2019-11-26 02:27:03,752 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 300 treesize of output 313 [2019-11-26 02:27:03,757 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:27:03,884 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-11-26 02:27:03,886 INFO L567 ElimStorePlain]: treesize reduction 359, result has 45.9 percent of original size [2019-11-26 02:27:03,887 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 02:27:03,888 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:303, output treesize:305 [2019-11-26 02:27:04,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:27:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:27:04,285 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:27:06,059 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-11-26 02:27:17,003 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-26 02:27:18,444 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-26 02:27:25,618 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-11-26 02:27:33,690 WARN L192 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-11-26 02:27:33,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:27:33,897 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 02:27:33,901 INFO L168 Benchmark]: Toolchain (without parser) took 39262.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 955.1 MB in the beginning and 1.0 GB in the end (delta: -64.4 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:33,901 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:27:33,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.85 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:33,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:33,903 INFO L168 Benchmark]: Boogie Preprocessor took 24.77 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 02:27:33,903 INFO L168 Benchmark]: RCFGBuilder took 361.04 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:33,904 INFO L168 Benchmark]: TraceAbstraction took 38524.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.0 MB). Peak memory consumption was 138.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:33,907 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.85 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 361.04 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 38524.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.0 MB). Peak memory consumption was 138.4 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...