./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/interleave_bits.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8ee9428aad4e911e10cde7de8379310dde1b70a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8ee9428aad4e911e10cde7de8379310dde1b70a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:25:42,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:25:42,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:25:42,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:25:42,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:25:42,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:25:42,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:25:42,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:25:42,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:25:42,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:25:42,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:25:42,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:25:42,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:25:42,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:25:42,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:25:42,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:25:42,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:25:42,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:25:42,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:25:42,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:25:42,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:25:42,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:25:42,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:25:42,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:25:43,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:25:43,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:25:43,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:25:43,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:25:43,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:25:43,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:25:43,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:25:43,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:25:43,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:25:43,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:25:43,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:25:43,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:25:43,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:25:43,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:25:43,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:25:43,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:25:43,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:25:43,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:25:43,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:25:43,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:25:43,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:25:43,082 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:25:43,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:25:43,083 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:25:43,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:25:43,083 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:25:43,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:25:43,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:25:43,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:25:43,085 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:25:43,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:25:43,086 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:25:43,086 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:25:43,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:25:43,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:25:43,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:25:43,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:25:43,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:25:43,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:25:43,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:25:43,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:25:43,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:25:43,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:25:43,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:25:43,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:25:43,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:25:43,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:25:43,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:25:43,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:25:43,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:25:43,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:25:43,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:25:43,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:25:43,095 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:25:43,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:25:43,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:25:43,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:25:43,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:25:43,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ee9428aad4e911e10cde7de8379310dde1b70a [2020-11-30 02:25:43,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:25:43,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:25:43,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:25:43,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:25:43,530 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:25:43,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/../../sv-benchmarks/c/bitvector/interleave_bits.i [2020-11-30 02:25:43,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/cba8eb61e/641b3527ffaa4ab2b7b2f1d669b3798a/FLAG09374c1c4 [2020-11-30 02:25:44,210 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:25:44,211 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/sv-benchmarks/c/bitvector/interleave_bits.i [2020-11-30 02:25:44,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/cba8eb61e/641b3527ffaa4ab2b7b2f1d669b3798a/FLAG09374c1c4 [2020-11-30 02:25:44,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/cba8eb61e/641b3527ffaa4ab2b7b2f1d669b3798a [2020-11-30 02:25:44,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:25:44,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:25:44,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:25:44,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:25:44,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:25:44,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69adf5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44, skipping insertion in model container [2020-11-30 02:25:44,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:25:44,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:25:44,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:25:44,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:25:44,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:25:44,885 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:25:44,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44 WrapperNode [2020-11-30 02:25:44,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:25:44,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:25:44,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:25:44,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:25:44,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:25:44,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:25:44,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:25:44,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:25:44,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... [2020-11-30 02:25:44,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:25:44,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:25:44,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:25:44,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:25:44,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:25:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:25:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:25:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:25:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:25:45,362 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:25:45,362 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:25:45,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:25:45 BoogieIcfgContainer [2020-11-30 02:25:45,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:25:45,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:25:45,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:25:45,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:25:45,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:25:44" (1/3) ... [2020-11-30 02:25:45,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500cdef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:25:45, skipping insertion in model container [2020-11-30 02:25:45,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:25:44" (2/3) ... [2020-11-30 02:25:45,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500cdef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:25:45, skipping insertion in model container [2020-11-30 02:25:45,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:25:45" (3/3) ... [2020-11-30 02:25:45,391 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2020-11-30 02:25:45,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:25:45,409 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:25:45,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:25:45,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:25:45,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:25:45,477 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:25:45,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:25:45,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:25:45,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:25:45,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:25:45,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:25:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-30 02:25:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:25:45,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:25:45,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:25:45,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:25:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:25:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash 64058178, now seen corresponding path program 1 times [2020-11-30 02:25:45,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:25:45,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200277690] [2020-11-30 02:25:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:25:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:25:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:45,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200277690] [2020-11-30 02:25:45,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:25:45,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:25:45,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459018732] [2020-11-30 02:25:45,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:25:45,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:25:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:25:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:25:45,864 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-30 02:25:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:25:45,914 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-11-30 02:25:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:25:45,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:25:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:25:45,937 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:25:45,949 INFO L226 Difference]: Without dead ends: 7 [2020-11-30 02:25:45,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:25:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-30 02:25:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-30 02:25:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 02:25:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-30 02:25:45,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-30 02:25:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:25:45,993 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-30 02:25:45,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:25:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-30 02:25:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:25:45,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:25:45,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:25:45,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:25:45,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:25:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:25:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1958199749, now seen corresponding path program 1 times [2020-11-30 02:25:45,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:25:45,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010780094] [2020-11-30 02:25:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:25:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:25:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010780094] [2020-11-30 02:25:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505732894] [2020-11-30 02:25:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:25:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:25:46,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:25:46,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:25:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:46,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:25:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:46,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1578308203] [2020-11-30 02:25:46,326 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 02:25:46,326 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:25:46,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:25:46,338 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:25:46,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:25:46,856 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:25:47,038 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-11-30 02:25:47,270 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-11-30 02:25:47,275 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:25:47,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:25:47,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-11-30 02:25:47,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081081237] [2020-11-30 02:25:47,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:25:47,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:25:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:25:47,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:25:47,291 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2020-11-30 02:25:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:25:47,349 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-30 02:25:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:25:47,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-30 02:25:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:25:47,353 INFO L225 Difference]: With dead ends: 14 [2020-11-30 02:25:47,353 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 02:25:47,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:25:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 02:25:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 02:25:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 02:25:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-30 02:25:47,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2020-11-30 02:25:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:25:47,358 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-30 02:25:47,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:25:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-30 02:25:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:25:47,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:25:47,366 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2020-11-30 02:25:47,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:25:47,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:25:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:25:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash 842169346, now seen corresponding path program 2 times [2020-11-30 02:25:47,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:25:47,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623317531] [2020-11-30 02:25:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:25:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:25:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:47,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623317531] [2020-11-30 02:25:47,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229165009] [2020-11-30 02:25:47,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:25:47,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 02:25:47,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:25:47,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:25:47,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:25:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:47,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:25:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:50,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893890802] [2020-11-30 02:25:50,111 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 02:25:50,111 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:25:50,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:25:50,112 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:25:50,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:25:50,344 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:25:50,539 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-11-30 02:25:50,841 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-11-30 02:25:50,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:25:50,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:25:50,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-11-30 02:25:50,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186376760] [2020-11-30 02:25:50,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:25:50,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:25:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:25:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=172, Unknown=1, NotChecked=0, Total=240 [2020-11-30 02:25:50,845 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 13 states. [2020-11-30 02:25:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:25:51,386 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-30 02:25:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:25:51,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2020-11-30 02:25:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:25:51,400 INFO L225 Difference]: With dead ends: 20 [2020-11-30 02:25:51,400 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:25:51,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=119, Invalid=260, Unknown=1, NotChecked=0, Total=380 [2020-11-30 02:25:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:25:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:25:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:25:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 02:25:51,405 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-11-30 02:25:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:25:51,406 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 02:25:51,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:25:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 02:25:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:25:51,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:25:51,412 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2020-11-30 02:25:51,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 02:25:51,623 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:25:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:25:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 990156066, now seen corresponding path program 3 times [2020-11-30 02:25:51,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:25:51,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530675502] [2020-11-30 02:25:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:25:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:25:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:51,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530675502] [2020-11-30 02:25:51,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357012106] [2020-11-30 02:25:51,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:25:51,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:25:51,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:25:52,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 02:25:52,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:25:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:52,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:25:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:25:59,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017799485] [2020-11-30 02:25:59,070 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 02:25:59,070 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:25:59,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:25:59,071 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:25:59,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:25:59,288 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:25:59,526 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-11-30 02:25:59,861 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-11-30 02:25:59,863 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:25:59,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:25:59,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2020-11-30 02:25:59,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338112470] [2020-11-30 02:25:59,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-30 02:25:59,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:25:59,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-30 02:25:59,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=574, Unknown=3, NotChecked=0, Total=756 [2020-11-30 02:25:59,866 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 25 states. [2020-11-30 02:26:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:26:02,830 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-11-30 02:26:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 02:26:02,835 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 15 [2020-11-30 02:26:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:26:02,836 INFO L225 Difference]: With dead ends: 26 [2020-11-30 02:26:02,836 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 02:26:02,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=255, Invalid=733, Unknown=4, NotChecked=0, Total=992 [2020-11-30 02:26:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 02:26:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 02:26:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 02:26:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-30 02:26:02,848 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-11-30 02:26:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:26:02,852 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-30 02:26:02,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-30 02:26:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-30 02:26:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:26:02,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:02,854 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1] [2020-11-30 02:26:03,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-30 02:26:03,078 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash -152611262, now seen corresponding path program 4 times [2020-11-30 02:26:03,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:26:03,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958883485] [2020-11-30 02:26:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:26:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:26:03,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:26:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:26:03,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:26:03,192 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:26:03,193 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:26:03,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-30 02:26:03,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:26:03 BoogieIcfgContainer [2020-11-30 02:26:03,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:26:03,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:26:03,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:26:03,250 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:26:03,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:25:45" (3/4) ... [2020-11-30 02:26:03,254 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:26:03,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:26:03,257 INFO L168 Benchmark]: Toolchain (without parser) took 18697.08 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 72.4 MB in the beginning and 42.6 MB in the end (delta: 29.8 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,259 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory was 89.0 MB in the beginning and 88.9 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:26:03,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.54 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 85.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,263 INFO L168 Benchmark]: Boogie Preprocessor took 27.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,264 INFO L168 Benchmark]: RCFGBuilder took 406.93 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 69.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,267 INFO L168 Benchmark]: TraceAbstraction took 17864.31 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 68.8 MB in the beginning and 42.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:26:03,268 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 136.3 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:26:03,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory was 89.0 MB in the beginning and 88.9 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.54 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 85.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 406.93 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 69.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17864.31 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 68.8 MB in the beginning and 42.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 136.3 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 56, overapproximation of bitwiseAnd at line 47. Possible FailurePath: [L34] unsigned short x = __VERIFIER_nondet_ushort(); [L35] unsigned short y = __VERIFIER_nondet_ushort(); [L36] unsigned int xx; [L37] unsigned int yy; [L38] unsigned int zz; [L39] unsigned int z = 0; [L40] unsigned int i = 0; [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND FALSE !(i < sizeof(x) * 8) [L45] xx = x [L46] yy = y [L47] xx = (xx | (xx << 8u)) & 16711935U [L48] xx = (xx | (xx << 4u)) & 252645135U [L49] xx = (xx | (xx << 2u)) & 858993459U [L50] xx = (xx | (xx << 1u)) & 1431655765U [L51] yy = (yy | (yy << 8u)) & 16711935U [L52] yy = (yy | (yy << 4u)) & 252645135U [L53] yy = (yy | (yy << 2u)) & 858993459U [L54] yy = (yy | (yy << 1u)) & 1431655765U [L56] zz = xx | (yy << 1U) [L16] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "interleave_bits.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 5, TraceHistogramMax: 16, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 68 SDs, 0 SdLazy, 203 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 4369 SizeOfPredicates, 3 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/198 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:26:06,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:26:06,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:26:06,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:26:06,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:26:06,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:26:06,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:26:06,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:26:06,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:26:06,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:26:06,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:26:06,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:26:06,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:26:06,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:26:06,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:26:06,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:26:06,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:26:06,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:26:06,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:26:06,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:26:06,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:26:06,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:26:06,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:26:06,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:26:06,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:26:06,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:26:06,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:26:06,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:26:06,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:26:06,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:26:06,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:26:06,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:26:06,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:26:06,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:26:06,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:26:06,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:26:06,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:26:06,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:26:06,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:26:06,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:26:06,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:26:06,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:26:06,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:26:06,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:26:06,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:26:06,455 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:26:06,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:26:06,456 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:26:06,456 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:26:06,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:26:06,456 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:26:06,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:26:06,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:26:06,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:26:06,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:26:06,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:26:06,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:26:06,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:26:06,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:26:06,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:26:06,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:26:06,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:26:06,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:26:06,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:26:06,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:26:06,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:26:06,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:26:06,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:26:06,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:26:06,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:26:06,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:26:06,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:26:06,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:26:06,466 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:26:06,466 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:26:06,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:26:06,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:26:06,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:26:06,467 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ee9428aad4e911e10cde7de8379310dde1b70a [2020-11-30 02:26:06,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:26:06,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:26:06,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:26:06,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:26:06,987 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:26:06,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/../../sv-benchmarks/c/bitvector/interleave_bits.i [2020-11-30 02:26:07,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/115ca3f5f/27c0e72904a1405190b6186c97d3aba7/FLAG49a77c15a [2020-11-30 02:26:07,706 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:26:07,707 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/sv-benchmarks/c/bitvector/interleave_bits.i [2020-11-30 02:26:07,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/115ca3f5f/27c0e72904a1405190b6186c97d3aba7/FLAG49a77c15a [2020-11-30 02:26:08,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/data/115ca3f5f/27c0e72904a1405190b6186c97d3aba7 [2020-11-30 02:26:08,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:26:08,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:26:08,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:26:08,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:26:08,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:26:08,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316e5e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08, skipping insertion in model container [2020-11-30 02:26:08,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:26:08,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:26:08,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:26:08,278 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:26:08,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:26:08,324 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:26:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08 WrapperNode [2020-11-30 02:26:08,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:26:08,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:26:08,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:26:08,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:26:08,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:26:08,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:26:08,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:26:08,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:26:08,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... [2020-11-30 02:26:08,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:26:08,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:26:08,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:26:08,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:26:08,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:26:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:26:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:26:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:26:08,960 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:26:08,960 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:26:08,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:26:08 BoogieIcfgContainer [2020-11-30 02:26:08,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:26:08,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:26:08,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:26:08,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:26:08,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:26:08" (1/3) ... [2020-11-30 02:26:08,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d6aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:26:08, skipping insertion in model container [2020-11-30 02:26:08,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:26:08" (2/3) ... [2020-11-30 02:26:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d6aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:26:08, skipping insertion in model container [2020-11-30 02:26:08,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:26:08" (3/3) ... [2020-11-30 02:26:08,971 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2020-11-30 02:26:08,984 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:26:08,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:26:09,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:26:09,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:26:09,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:26:09,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:26:09,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:26:09,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:26:09,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:26:09,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:26:09,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:26:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 02:26:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:26:09,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:09,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:26:09,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-11-30 02:26:09,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:26:09,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347191244] [2020-11-30 02:26:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:26:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:26:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:26:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:09,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347191244] [2020-11-30 02:26:09,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:26:09,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:26:09,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545553201] [2020-11-30 02:26:09,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:26:09,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:26:09,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:26:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:26:09,302 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-11-30 02:26:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:26:09,375 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2020-11-30 02:26:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:26:09,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 02:26:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:26:09,390 INFO L225 Difference]: With dead ends: 24 [2020-11-30 02:26:09,392 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 02:26:09,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:26:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 02:26:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 02:26:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:26:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-30 02:26:09,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-30 02:26:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:26:09,438 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-30 02:26:09,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:26:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-30 02:26:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:26:09,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:09,440 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:26:09,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:26:09,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-11-30 02:26:09,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:26:09,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416614495] [2020-11-30 02:26:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:26:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:26:09,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:26:09,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:09,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416614495] [2020-11-30 02:26:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [214129684] [2020-11-30 02:26:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:26:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:26:10,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:26:10,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:10,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:10,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631571804] [2020-11-30 02:26:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:26:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:26:10,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:26:10,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:10,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:10,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:26:10,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2020-11-30 02:26:10,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019404013] [2020-11-30 02:26:10,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:26:10,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:26:10,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:26:10,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:26:10,321 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-11-30 02:26:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:26:10,615 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-30 02:26:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:26:10,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-11-30 02:26:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:26:10,616 INFO L225 Difference]: With dead ends: 21 [2020-11-30 02:26:10,617 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 02:26:10,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:26:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 02:26:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 02:26:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:26:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 02:26:10,628 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2020-11-30 02:26:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:26:10,629 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 02:26:10,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:26:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 02:26:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:26:10,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:10,639 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:26:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:26:11,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1673996692, now seen corresponding path program 2 times [2020-11-30 02:26:11,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:26:11,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016738720] [2020-11-30 02:26:11,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:26:11,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:26:11,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:11,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:26:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016738720] [2020-11-30 02:26:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [47156400] [2020-11-30 02:26:11,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:26:12,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:26:12,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:26:12,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:12,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:12,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560348063] [2020-11-30 02:26:12,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/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 [2020-11-30 02:26:12,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:26:12,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:12,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:26:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:12,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:12,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:26:12,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 22 [2020-11-30 02:26:12,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464177952] [2020-11-30 02:26:12,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 02:26:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:26:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 02:26:12,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:26:12,970 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 22 states. [2020-11-30 02:26:14,214 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-30 02:26:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:26:14,218 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-11-30 02:26:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 02:26:14,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 14 [2020-11-30 02:26:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:26:14,219 INFO L225 Difference]: With dead ends: 29 [2020-11-30 02:26:14,219 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:26:14,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=287, Invalid=525, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:26:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:26:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:26:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:26:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-30 02:26:14,228 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-11-30 02:26:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:26:14,228 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-30 02:26:14,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 02:26:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-30 02:26:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:26:14,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:14,229 INFO L422 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:26:14,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:26:14,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:14,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash -26371860, now seen corresponding path program 3 times [2020-11-30 02:26:14,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:26:14,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895386672] [2020-11-30 02:26:14,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:26:14,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-30 02:26:14,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 02:26:14,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:15,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:16,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895386672] [2020-11-30 02:26:16,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1686297535] [2020-11-30 02:26:16,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:26:16,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-30 02:26:16,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:16,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 02:26:16,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:17,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:17,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061412557] [2020-11-30 02:26:17,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:26:17,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-30 02:26:17,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:17,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 02:26:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:17,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:26:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:17,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:26:17,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2020-11-30 02:26:17,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666603607] [2020-11-30 02:26:17,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-30 02:26:17,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:26:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-30 02:26:17,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2020-11-30 02:26:17,201 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 32 states. [2020-11-30 02:26:17,859 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-30 02:26:18,461 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-30 02:26:19,023 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 02:26:19,377 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 7 [2020-11-30 02:26:19,806 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 7 [2020-11-30 02:26:20,149 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 7 [2020-11-30 02:26:20,463 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 7 [2020-11-30 02:26:20,792 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 7 [2020-11-30 02:26:21,078 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-11-30 02:26:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:26:22,446 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-11-30 02:26:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-30 02:26:22,447 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 22 [2020-11-30 02:26:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:26:22,449 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:26:22,449 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 02:26:22,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=622, Invalid=1540, Unknown=0, NotChecked=0, Total=2162 [2020-11-30 02:26:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 02:26:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-30 02:26:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 02:26:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-30 02:26:22,471 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 22 [2020-11-30 02:26:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:26:22,472 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-30 02:26:22,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-30 02:26:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-30 02:26:22,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:26:22,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:26:22,482 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:26:23,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:26:23,103 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:26:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:26:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 99558796, now seen corresponding path program 4 times [2020-11-30 02:26:23,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:26:23,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921071878] [2020-11-30 02:26:23,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 02:26:23,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:26:23,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:26:23,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-30 02:26:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:26:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:26:24,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:27:32,194 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 16)) (ULTIMATE.start_main_~y~0 (_ BitVec 16))) (let ((.cse0 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse2 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (= (let ((.cse31 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv15 32)))) (bvor (let ((.cse29 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv14 32)))) (bvor (let ((.cse27 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv13 32)))) (bvor (let ((.cse25 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv12 32)))) (bvor (let ((.cse23 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv11 32)))) (bvor (let ((.cse21 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv10 32)))) (bvor (let ((.cse19 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv9 32)))) (bvor (let ((.cse17 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv8 32)))) (bvor (let ((.cse15 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv7 32)))) (bvor (let ((.cse13 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv6 32)))) (bvor (let ((.cse11 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv5 32)))) (bvor (let ((.cse9 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (bvor (let ((.cse7 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv3 32)))) (bvor (let ((.cse5 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv2 32)))) (bvor (let ((.cse3 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)))) (bvor (bvor c_ULTIMATE.start_main_~z~0 (let ((.cse1 (bvshl (_ bv1 32) c_ULTIMATE.start_main_~i~0))) (bvor (bvshl (bvand .cse0 .cse1) c_ULTIMATE.start_main_~i~0) (bvshl (bvand .cse2 .cse1) .cse3)))) (let ((.cse4 (bvshl (_ bv1 32) .cse3))) (bvor (bvshl (bvand .cse0 .cse4) .cse3) (bvshl (bvand .cse2 .cse4) .cse5))))) (let ((.cse6 (bvshl (_ bv1 32) .cse5))) (bvor (bvshl (bvand .cse0 .cse6) .cse5) (bvshl (bvand .cse2 .cse6) .cse7))))) (let ((.cse8 (bvshl (_ bv1 32) .cse7))) (bvor (bvshl (bvand .cse0 .cse8) .cse7) (bvshl (bvand .cse2 .cse8) .cse9))))) (let ((.cse10 (bvshl (_ bv1 32) .cse9))) (bvor (bvshl (bvand .cse0 .cse10) .cse9) (bvshl (bvand .cse2 .cse10) .cse11))))) (let ((.cse12 (bvshl (_ bv1 32) .cse11))) (bvor (bvshl (bvand .cse0 .cse12) .cse11) (bvshl (bvand .cse2 .cse12) .cse13))))) (let ((.cse14 (bvshl (_ bv1 32) .cse13))) (bvor (bvshl (bvand .cse0 .cse14) .cse13) (bvshl (bvand .cse2 .cse14) .cse15))))) (let ((.cse16 (bvshl (_ bv1 32) .cse15))) (bvor (bvshl (bvand .cse0 .cse16) .cse15) (bvshl (bvand .cse2 .cse16) .cse17))))) (let ((.cse18 (bvshl (_ bv1 32) .cse17))) (bvor (bvshl (bvand .cse0 .cse18) .cse17) (bvshl (bvand .cse2 .cse18) .cse19))))) (let ((.cse20 (bvshl (_ bv1 32) .cse19))) (bvor (bvshl (bvand .cse0 .cse20) .cse19) (bvshl (bvand .cse2 .cse20) .cse21))))) (let ((.cse22 (bvshl (_ bv1 32) .cse21))) (bvor (bvshl (bvand .cse0 .cse22) .cse21) (bvshl (bvand .cse2 .cse22) .cse23))))) (let ((.cse24 (bvshl (_ bv1 32) .cse23))) (bvor (bvshl (bvand .cse0 .cse24) .cse23) (bvshl (bvand .cse2 .cse24) .cse25))))) (let ((.cse26 (bvshl (_ bv1 32) .cse25))) (bvor (bvshl (bvand .cse0 .cse26) .cse25) (bvshl (bvand .cse2 .cse26) .cse27))))) (let ((.cse28 (bvshl (_ bv1 32) .cse27))) (bvor (bvshl (bvand .cse0 .cse28) .cse27) (bvshl (bvand .cse2 .cse28) .cse29))))) (let ((.cse30 (bvshl (_ bv1 32) .cse29))) (bvor (bvshl (bvand .cse0 .cse30) .cse29) (bvshl (bvand .cse2 .cse30) .cse31))))) (let ((.cse32 (bvshl (_ bv1 32) .cse31))) (bvor (bvshl (bvand .cse0 .cse32) .cse31) (bvshl (bvand .cse2 .cse32) (bvadd c_ULTIMATE.start_main_~i~0 (_ bv16 32))))))) (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (_ bv0 32) (bvor (bvshl (bvand .cse0 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse2 (_ bv1 32)) (_ bv1 32)))) (bvor (bvshl (bvand .cse0 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse2 (_ bv2 32)) (_ bv2 32)))) (bvor (bvshl (bvand .cse0 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse2 (_ bv4 32)) (_ bv3 32)))) (bvor (bvshl (bvand .cse0 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse2 (_ bv8 32)) (_ bv4 32)))) (bvor (bvshl (bvand .cse0 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse2 (_ bv16 32)) (_ bv5 32)))) (bvor (bvshl (bvand .cse0 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse2 (_ bv32 32)) (_ bv6 32)))) (bvor (bvshl (bvand .cse0 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse2 (_ bv64 32)) (_ bv7 32)))) (bvor (bvshl (bvand .cse0 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse2 (_ bv128 32)) (_ bv8 32)))) (bvor (bvshl (bvand .cse0 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse2 (_ bv256 32)) (_ bv9 32)))) (bvor (bvshl (bvand .cse0 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse2 (_ bv512 32)) (_ bv10 32)))) (bvor (bvshl (bvand .cse0 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse2 (_ bv1024 32)) (_ bv11 32)))) (bvor (bvshl (bvand .cse0 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse2 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse0 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse2 (_ bv4096 32)) (_ bv13 32)))) (bvor (bvshl (bvand .cse0 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse2 (_ bv8192 32)) (_ bv14 32)))) (bvor (bvshl (bvand .cse0 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse2 (_ bv16384 32)) (_ bv15 32)))) (bvor (bvshl (bvand .cse0 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse2 (_ bv32768 32)) (_ bv16 32))))))) is different from false [2020-11-30 02:27:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-11-30 02:27:32,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921071878] [2020-11-30 02:27:32,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [941892023] [2020-11-30 02:27:32,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:27:32,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:27:32,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:27:32,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-30 02:27:32,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:27:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:27:33,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:27:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-11-30 02:27:34,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638795826] [2020-11-30 02:27:34,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:27:34,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:27:34,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:27:34,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 58 conjunts are in the unsatisfiable core [2020-11-30 02:27:34,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:27:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:27:35,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:27:39,377 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-11-30 02:27:41,397 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-11-30 02:27:43,560 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 167 [2020-11-30 02:27:45,916 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 175 [2020-11-30 02:27:48,740 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-11-30 02:27:51,599 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-11-30 02:27:54,836 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 199 [2020-11-30 02:27:58,240 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-11-30 02:28:02,019 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2020-11-30 02:28:06,205 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2020-11-30 02:28:10,615 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 231 [2020-11-30 02:28:15,416 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 239 [2020-11-30 02:28:20,923 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 247 [2020-11-30 02:28:26,651 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 255 [2020-11-30 02:28:29,954 WARN L838 $PredicateComparison]: unable to prove that (or (bvult (bvadd c_ULTIMATE.start_main_~i~0 (_ bv16 32)) (_ bv16 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 16)) (ULTIMATE.start_main_~y~0 (_ BitVec 16))) (let ((.cse0 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse2 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (= (let ((.cse31 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv15 32)))) (bvor (let ((.cse29 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv14 32)))) (bvor (let ((.cse27 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv13 32)))) (bvor (let ((.cse25 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv12 32)))) (bvor (let ((.cse23 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv11 32)))) (bvor (let ((.cse21 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv10 32)))) (bvor (let ((.cse19 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv9 32)))) (bvor (let ((.cse17 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv8 32)))) (bvor (let ((.cse15 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv7 32)))) (bvor (let ((.cse13 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv6 32)))) (bvor (let ((.cse11 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv5 32)))) (bvor (let ((.cse9 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (bvor (let ((.cse7 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv3 32)))) (bvor (let ((.cse5 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv2 32)))) (bvor (let ((.cse3 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)))) (bvor (bvor c_ULTIMATE.start_main_~z~0 (let ((.cse1 (bvshl (_ bv1 32) c_ULTIMATE.start_main_~i~0))) (bvor (bvshl (bvand .cse0 .cse1) c_ULTIMATE.start_main_~i~0) (bvshl (bvand .cse2 .cse1) .cse3)))) (let ((.cse4 (bvshl (_ bv1 32) .cse3))) (bvor (bvshl (bvand .cse0 .cse4) .cse3) (bvshl (bvand .cse2 .cse4) .cse5))))) (let ((.cse6 (bvshl (_ bv1 32) .cse5))) (bvor (bvshl (bvand .cse0 .cse6) .cse5) (bvshl (bvand .cse2 .cse6) .cse7))))) (let ((.cse8 (bvshl (_ bv1 32) .cse7))) (bvor (bvshl (bvand .cse0 .cse8) .cse7) (bvshl (bvand .cse2 .cse8) .cse9))))) (let ((.cse10 (bvshl (_ bv1 32) .cse9))) (bvor (bvshl (bvand .cse0 .cse10) .cse9) (bvshl (bvand .cse2 .cse10) .cse11))))) (let ((.cse12 (bvshl (_ bv1 32) .cse11))) (bvor (bvshl (bvand .cse0 .cse12) .cse11) (bvshl (bvand .cse2 .cse12) .cse13))))) (let ((.cse14 (bvshl (_ bv1 32) .cse13))) (bvor (bvshl (bvand .cse0 .cse14) .cse13) (bvshl (bvand .cse2 .cse14) .cse15))))) (let ((.cse16 (bvshl (_ bv1 32) .cse15))) (bvor (bvshl (bvand .cse0 .cse16) .cse15) (bvshl (bvand .cse2 .cse16) .cse17))))) (let ((.cse18 (bvshl (_ bv1 32) .cse17))) (bvor (bvshl (bvand .cse0 .cse18) .cse17) (bvshl (bvand .cse2 .cse18) .cse19))))) (let ((.cse20 (bvshl (_ bv1 32) .cse19))) (bvor (bvshl (bvand .cse0 .cse20) .cse19) (bvshl (bvand .cse2 .cse20) .cse21))))) (let ((.cse22 (bvshl (_ bv1 32) .cse21))) (bvor (bvshl (bvand .cse0 .cse22) .cse21) (bvshl (bvand .cse2 .cse22) .cse23))))) (let ((.cse24 (bvshl (_ bv1 32) .cse23))) (bvor (bvshl (bvand .cse0 .cse24) .cse23) (bvshl (bvand .cse2 .cse24) .cse25))))) (let ((.cse26 (bvshl (_ bv1 32) .cse25))) (bvor (bvshl (bvand .cse0 .cse26) .cse25) (bvshl (bvand .cse2 .cse26) .cse27))))) (let ((.cse28 (bvshl (_ bv1 32) .cse27))) (bvor (bvshl (bvand .cse0 .cse28) .cse27) (bvshl (bvand .cse2 .cse28) .cse29))))) (let ((.cse30 (bvshl (_ bv1 32) .cse29))) (bvor (bvshl (bvand .cse0 .cse30) .cse29) (bvshl (bvand .cse2 .cse30) .cse31))))) (let ((.cse32 (bvshl (_ bv1 32) .cse31))) (bvor (bvshl (bvand .cse0 .cse32) .cse31) (bvshl (bvand .cse2 .cse32) (bvadd c_ULTIMATE.start_main_~i~0 (_ bv16 32))))))) (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (bvor (_ bv0 32) (bvor (bvshl (bvand .cse0 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse2 (_ bv1 32)) (_ bv1 32)))) (bvor (bvshl (bvand .cse0 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse2 (_ bv2 32)) (_ bv2 32)))) (bvor (bvshl (bvand .cse0 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse2 (_ bv4 32)) (_ bv3 32)))) (bvor (bvshl (bvand .cse0 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse2 (_ bv8 32)) (_ bv4 32)))) (bvor (bvshl (bvand .cse0 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse2 (_ bv16 32)) (_ bv5 32)))) (bvor (bvshl (bvand .cse0 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse2 (_ bv32 32)) (_ bv6 32)))) (bvor (bvshl (bvand .cse0 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse2 (_ bv64 32)) (_ bv7 32)))) (bvor (bvshl (bvand .cse0 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse2 (_ bv128 32)) (_ bv8 32)))) (bvor (bvshl (bvand .cse0 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse2 (_ bv256 32)) (_ bv9 32)))) (bvor (bvshl (bvand .cse0 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse2 (_ bv512 32)) (_ bv10 32)))) (bvor (bvshl (bvand .cse0 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse2 (_ bv1024 32)) (_ bv11 32)))) (bvor (bvshl (bvand .cse0 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse2 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse0 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse2 (_ bv4096 32)) (_ bv13 32)))) (bvor (bvshl (bvand .cse0 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse2 (_ bv8192 32)) (_ bv14 32)))) (bvor (bvshl (bvand .cse0 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse2 (_ bv16384 32)) (_ bv15 32)))) (bvor (bvshl (bvand .cse0 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse2 (_ bv32768 32)) (_ bv16 32))))))) (not (bvult c_ULTIMATE.start_main_~i~0 (_ bv16 32))) (not (bvult (bvadd c_ULTIMATE.start_main_~i~0 (_ bv15 32)) (_ bv16 32)))) is different from false [2020-11-30 02:28:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-11-30 02:28:30,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:28:30,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20, 20, 21, 21] total 55 [2020-11-30 02:28:30,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544549920] [2020-11-30 02:28:30,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-30 02:28:30,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:30,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-30 02:28:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=878, Invalid=1884, Unknown=2, NotChecked=206, Total=2970 [2020-11-30 02:28:30,051 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 55 states. [2020-11-30 02:28:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:33,096 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-30 02:28:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-30 02:28:33,096 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 24 [2020-11-30 02:28:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:33,097 INFO L225 Difference]: With dead ends: 41 [2020-11-30 02:28:33,097 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:28:33,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 63 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 125.8s TimeCoverageRelationStatistics Valid=915, Invalid=1953, Unknown=2, NotChecked=210, Total=3080 [2020-11-30 02:28:33,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:28:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:28:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:28:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:28:33,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-11-30 02:28:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:33,101 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:28:33,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-30 02:28:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:28:33,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:28:33,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt --rewrite-divk,12 mathsat -unsat_core_generation=3 [2020-11-30 02:28:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:28:33,908 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2020-11-30 02:28:35,868 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 261 DAG size of output: 204 [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:28:35,872 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-30 02:28:35,873 INFO L277 CegarLoopResult]: At program point L16-2(lines 1 59) the Hoare annotation is: true [2020-11-30 02:28:35,873 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 02:28:35,873 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 02:28:35,873 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 02:28:35,873 INFO L270 CegarLoopResult]: At program point L41-2(lines 41 44) the Hoare annotation is: (let ((.cse8 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse9 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (let ((.cse3 (bvor (_ bv0 32) (bvor (bvshl (bvand .cse8 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse9 (_ bv1 32)) (_ bv1 32)))))) (let ((.cse6 (bvor .cse3 (bvor (bvshl (bvand .cse8 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse9 (_ bv2 32)) (_ bv2 32)))))) (let ((.cse12 (bvor .cse6 (bvor (bvshl (bvand .cse8 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse9 (_ bv4 32)) (_ bv3 32)))))) (let ((.cse4 (bvor (bvor .cse12 (bvor (bvshl (bvand .cse8 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse9 (_ bv8 32)) (_ bv4 32)))) (bvor (bvshl (bvand .cse8 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse9 (_ bv16 32)) (_ bv5 32)))))) (let ((.cse1 (bvor (bvor .cse4 (bvor (bvshl (bvand .cse8 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse9 (_ bv32 32)) (_ bv6 32)))) (bvor (bvshl (bvand .cse8 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse9 (_ bv64 32)) (_ bv7 32)))))) (let ((.cse0 (bvor .cse1 (bvor (bvshl (bvand .cse8 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse9 (_ bv128 32)) (_ bv8 32)))))) (let ((.cse10 (bvor (bvor .cse0 (bvor (bvshl (bvand .cse8 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse9 (_ bv256 32)) (_ bv9 32)))) (bvor (bvshl (bvand .cse8 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse9 (_ bv512 32)) (_ bv10 32)))))) (let ((.cse11 (bvor .cse10 (bvor (bvshl (bvand .cse8 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse9 (_ bv1024 32)) (_ bv11 32)))))) (let ((.cse2 (bvor (bvor (bvor .cse11 (bvor (bvshl (bvand .cse8 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse9 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse8 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse9 (_ bv4096 32)) (_ bv13 32)))) (bvor (bvshl (bvand .cse8 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse9 (_ bv8192 32)) (_ bv14 32))))) (.cse15 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)))) (let ((.cse5 (let ((.cse16 (bvshl (_ bv1 32) .cse15))) (bvor (bvshl (bvand .cse8 .cse16) .cse15) (bvshl (bvand .cse9 .cse16) ULTIMATE.start_main_~i~0)))) (.cse7 (bvor .cse2 (bvor (bvshl (bvand .cse8 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse9 (_ bv16384 32)) (_ bv15 32)))))) (or (and (= .cse0 ULTIMATE.start_main_~z~0) (= (_ bv8 32) ULTIMATE.start_main_~i~0)) (and (= .cse1 ULTIMATE.start_main_~z~0) (= (_ bv7 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~z~0 .cse2) (= (_ bv14 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv1 32) ULTIMATE.start_main_~i~0) (= .cse3 ULTIMATE.start_main_~z~0)) (and (= (_ bv5 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse4)) (and (= (_ bv9 32) ULTIMATE.start_main_~i~0) (= (bvor .cse0 .cse5) ULTIMATE.start_main_~z~0)) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse6)) (and (= (_ bv16 32) ULTIMATE.start_main_~i~0) (= (bvor .cse7 (bvor (bvshl (bvand .cse8 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse9 (_ bv32768 32)) (_ bv16 32)))) ULTIMATE.start_main_~z~0)) (and (= ULTIMATE.start_main_~z~0 .cse10) (= (_ bv10 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv12 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 (bvor .cse11 .cse5))) (and (= (_ bv11 32) ULTIMATE.start_main_~i~0) (= .cse11 ULTIMATE.start_main_~z~0)) (and (= (_ bv3 32) ULTIMATE.start_main_~i~0) (= .cse12 ULTIMATE.start_main_~z~0)) (and (= ULTIMATE.start_main_~z~0 (bvor .cse12 .cse5)) (= (_ bv4 32) ULTIMATE.start_main_~i~0)) (and (= (bvor .cse4 .cse5) ULTIMATE.start_main_~z~0) (= (_ bv6 32) ULTIMATE.start_main_~i~0)) (and (= (bvor (bvor .cse11 (let ((.cse14 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967294 32)))) (let ((.cse13 (bvshl (_ bv1 32) .cse14))) (bvor (bvshl (bvand .cse8 .cse13) .cse14) (bvshl (bvand .cse9 .cse13) .cse15))))) .cse5) ULTIMATE.start_main_~z~0) (= (_ bv13 32) ULTIMATE.start_main_~i~0)) (and (= .cse7 ULTIMATE.start_main_~z~0) (= (_ bv15 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv0 32) ULTIMATE.start_main_~i~0) (= (_ bv0 32) ULTIMATE.start_main_~z~0)))))))))))))) [2020-11-30 02:28:35,873 INFO L274 CegarLoopResult]: For program point L41-3(lines 41 44) no Hoare annotation was computed. [2020-11-30 02:28:35,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:28:35 BoogieIcfgContainer [2020-11-30 02:28:35,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:28:35,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:28:35,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:28:35,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:28:35,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:26:08" (3/4) ... [2020-11-30 02:28:35,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:28:35,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 02:28:35,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:28:35,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:28:35,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:28:36,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7fc9e37-958b-4fa7-86aa-43a81f55b508/bin/utaipan/witness.graphml [2020-11-30 02:28:36,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:28:36,093 INFO L168 Benchmark]: Toolchain (without parser) took 148070.12 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 59.0 MB in the beginning and 52.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,094 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:28:36,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.20 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 48.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.42 ms. Allocated memory is still 77.6 MB. Free memory was 48.8 MB in the beginning and 60.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,096 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 77.6 MB. Free memory was 60.4 MB in the beginning and 59.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,096 INFO L168 Benchmark]: RCFGBuilder took 513.67 ms. Allocated memory is still 77.6 MB. Free memory was 59.4 MB in the beginning and 47.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,097 INFO L168 Benchmark]: TraceAbstraction took 147015.97 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 46.9 MB in the beginning and 58.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,098 INFO L168 Benchmark]: Witness Printer took 111.46 ms. Allocated memory is still 123.7 MB. Free memory was 58.7 MB in the beginning and 52.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:36,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.20 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 48.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.42 ms. Allocated memory is still 77.6 MB. Free memory was 48.8 MB in the beginning and 60.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 77.6 MB. Free memory was 60.4 MB in the beginning and 59.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.67 ms. Allocated memory is still 77.6 MB. Free memory was 59.4 MB in the beginning and 47.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 147015.97 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 46.9 MB in the beginning and 58.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. * Witness Printer took 111.46 ms. Allocated memory is still 123.7 MB. Free memory was 58.7 MB in the beginning and 52.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((((((~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))) == z && 8bv32 == i) || (~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))) == z && 7bv32 == i)) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))) && 14bv32 == i)) || (1bv32 == i && ~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))) == z)) || (5bv32 == i && z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))))) || (9bv32 == i && ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))) == z)) || (2bv32 == i && z == ~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))))) || (16bv32 == i && ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16384bv32), 14bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16384bv32), 15bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32768bv32), 15bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32768bv32), 16bv32))) == z)) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))) && 10bv32 == i)) || (12bv32 == i && z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))))) || (11bv32 == i && ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))) == z)) || (3bv32 == i && ~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))) == z)) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))) && 4bv32 == i)) || (~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))) == z && 6bv32 == i)) || (~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967294bv32))), ~bvadd64(i, 4294967294bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967294bv32))), ~bvadd64(i, 4294967295bv32)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))) == z && 13bv32 == i)) || (~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16384bv32), 14bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16384bv32), 15bv32))) == z && 15bv32 == i)) || (0bv32 == i && 0bv32 == z) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 144.6s, OverallIterations: 5, TraceHistogramMax: 16, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 131 SDslu, 159 SDs, 0 SdLazy, 610 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 274 SyntacticMatches, 24 SemanticMatches, 139 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 135.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 20 NumberOfFragments, 2087 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 2 FomulaSimplificationsInter, 386 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 129.7s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 410 ConstructedInterpolants, 3 QuantifiedInterpolants, 702918 SizeOfPredicates, 42 NumberOfNonLiveVariables, 745 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 240/1590 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...