./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 0.2.0-7b2dab5 [2020-12-09 05:20:40,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:20:40,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:20:40,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:20:40,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:20:40,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:20:40,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:20:40,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:20:40,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:20:40,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:20:40,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:20:40,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:20:40,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:20:40,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:20:40,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:20:40,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:20:40,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:20:40,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:20:40,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:20:40,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:20:40,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:20:40,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:20:40,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:20:40,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:20:40,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:20:40,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:20:40,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:20:40,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:20:40,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:20:40,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:20:40,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:20:40,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:20:40,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:20:40,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:20:40,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:20:40,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:20:40,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:20:40,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:20:40,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:20:40,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:20:40,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:20:40,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:20:40,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:20:40,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:20:40,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:20:40,884 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:20:40,885 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:20:40,885 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:20:40,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:20:40,885 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:20:40,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:20:40,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:20:40,886 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:20:40,886 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:20:40,886 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:20:40,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:20:40,886 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:20:40,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:20:40,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:20:40,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:20:40,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:20:40,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:20:40,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:20:40,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:20:40,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:20:40,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:20:40,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:20:40,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:20:40,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:20:40,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:20:40,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:20:40,892 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_3bece773-a569-4972-86c8-d3137c29123e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ee9428aad4e911e10cde7de8379310dde1b70a [2020-12-09 05:20:41,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:20:41,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:20:41,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:20:41,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:20:41,082 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:20:41,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/../../sv-benchmarks/c/bitvector/interleave_bits.i [2020-12-09 05:20:41,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/8ff2f9627/6ec457920eb149a4b955f9e708ed8ebd/FLAGbbfc10cc7 [2020-12-09 05:20:41,481 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:20:41,482 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i [2020-12-09 05:20:41,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/8ff2f9627/6ec457920eb149a4b955f9e708ed8ebd/FLAGbbfc10cc7 [2020-12-09 05:20:41,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/8ff2f9627/6ec457920eb149a4b955f9e708ed8ebd [2020-12-09 05:20:41,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:20:41,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:20:41,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:20:41,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:20:41,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:20:41,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:41" (1/1) ... [2020-12-09 05:20:41,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8fccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:41, skipping insertion in model container [2020-12-09 05:20:41,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:41" (1/1) ... [2020-12-09 05:20:41,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:20:41,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:20:42,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2020-12-09 05:20:42,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:20:42,043 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:20:42,051 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2020-12-09 05:20:42,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:20:42,067 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:20:42,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42 WrapperNode [2020-12-09 05:20:42,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:20:42,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:20:42,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:20:42,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:20:42,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:20:42,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:20:42,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:20:42,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:20:42,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... [2020-12-09 05:20:42,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:20:42,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:20:42,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:20:42,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:20:42,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:20:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:20:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:20:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:20:42,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:20:42,327 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:20:42,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:42 BoogieIcfgContainer [2020-12-09 05:20:42,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:20:42,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:20:42,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:20:42,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:20:42,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:20:41" (1/3) ... [2020-12-09 05:20:42,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d507b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:42, skipping insertion in model container [2020-12-09 05:20:42,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:42" (2/3) ... [2020-12-09 05:20:42,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d507b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:42, skipping insertion in model container [2020-12-09 05:20:42,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:42" (3/3) ... [2020-12-09 05:20:42,341 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2020-12-09 05:20:42,351 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:20:42,353 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:20:42,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:20:42,376 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:20:42,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:20:42,377 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:20:42,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:20:42,377 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:20:42,377 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:20:42,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:20:42,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:20:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-09 05:20:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 05:20:42,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:42,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 05:20:42,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:42,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:42,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1818790, now seen corresponding path program 1 times [2020-12-09 05:20:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:20:42,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824307879] [2020-12-09 05:20:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:20:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:42,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824307879] [2020-12-09 05:20:42,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:20:42,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:20:42,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759158289] [2020-12-09 05:20:42,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:20:42,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:20:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:20:42,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:20:42,533 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-12-09 05:20:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:42,551 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-09 05:20:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:20:42,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 05:20:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:42,558 INFO L225 Difference]: With dead ends: 13 [2020-12-09 05:20:42,558 INFO L226 Difference]: Without dead ends: 6 [2020-12-09 05:20:42,561 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 [2020-12-09 05:20:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-12-09 05:20:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-12-09 05:20:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-12-09 05:20:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-12-09 05:20:42,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-12-09 05:20:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:42,584 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-12-09 05:20:42,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:20:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-12-09 05:20:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:20:42,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:42,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:20:42,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:20:42,586 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash 55770291, now seen corresponding path program 1 times [2020-12-09 05:20:42,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:20:42,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421983775] [2020-12-09 05:20:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:20:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:42,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421983775] [2020-12-09 05:20:42,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058382322] [2020-12-09 05:20:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:20:42,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:42,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [160582592] [2020-12-09 05:20:42,748 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 05:20:42,749 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:20:42,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:20:42,755 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:20:42,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:20:42,997 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:20:43,176 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:20:43,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:20:43,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-12-09 05:20:43,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965473437] [2020-12-09 05:20:43,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:20:43,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:20:43,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:20:43,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 05:20:43,179 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 7 states. [2020-12-09 05:20:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:43,207 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-12-09 05:20:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:20:43,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-12-09 05:20:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:43,208 INFO L225 Difference]: With dead ends: 12 [2020-12-09 05:20:43,208 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 05:20:43,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-09 05:20:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 05:20:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 05:20:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 05:20:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-09 05:20:43,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-12-09 05:20:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:43,212 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-09 05:20:43,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:20:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-09 05:20:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:20:43,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:43,212 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2020-12-09 05:20:43,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 05:20:43,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:43,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1307517978, now seen corresponding path program 2 times [2020-12-09 05:20:43,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:20:43,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541312452] [2020-12-09 05:20:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:20:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541312452] [2020-12-09 05:20:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120716305] [2020-12-09 05:20:43,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:43,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 05:20:43,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 05:20:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:43,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:43,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327008369] [2020-12-09 05:20:43,767 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 05:20:43,767 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:20:43,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:20:43,768 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:20:43,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:20:43,892 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:20:44,110 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:20:44,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:20:44,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-12-09 05:20:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414984346] [2020-12-09 05:20:44,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 05:20:44,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:20:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 05:20:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-12-09 05:20:44,112 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2020-12-09 05:20:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:44,326 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-12-09 05:20:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 05:20:44,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-12-09 05:20:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:44,328 INFO L225 Difference]: With dead ends: 18 [2020-12-09 05:20:44,328 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 05:20:44,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-12-09 05:20:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 05:20:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 05:20:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 05:20:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 05:20:44,332 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 05:20:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:44,332 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 05:20:44,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 05:20:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 05:20:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:20:44,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:44,333 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2020-12-09 05:20:44,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-09 05:20:44,534 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1742587706, now seen corresponding path program 3 times [2020-12-09 05:20:44,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:20:44,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798898954] [2020-12-09 05:20:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:20:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:44,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798898954] [2020-12-09 05:20:44,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540386592] [2020-12-09 05:20:44,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:44,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:20:44,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:44,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 05:20:44,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:44,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:45,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98243034] [2020-12-09 05:20:45,120 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 05:20:45,120 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:20:45,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:20:45,121 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:20:45,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:20:45,238 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:20:45,485 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:20:45,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:20:45,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2020-12-09 05:20:45,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463386026] [2020-12-09 05:20:45,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-09 05:20:45,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:20:45,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-09 05:20:45,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2020-12-09 05:20:45,487 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 25 states. [2020-12-09 05:20:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:45,824 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-12-09 05:20:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-09 05:20:45,825 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 14 [2020-12-09 05:20:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:45,825 INFO L225 Difference]: With dead ends: 24 [2020-12-09 05:20:45,825 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 05:20:45,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2020-12-09 05:20:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 05:20:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 05:20:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:20:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-09 05:20:45,829 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2020-12-09 05:20:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:45,830 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-09 05:20:45,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-09 05:20:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-09 05:20:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 05:20:45,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:45,831 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2020-12-09 05:20:46,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-09 05:20:46,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash -198021722, now seen corresponding path program 4 times [2020-12-09 05:20:46,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:20:46,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749306652] [2020-12-09 05:20:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:20:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:20:46,090 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:20:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:20:46,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:20:46,136 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:20:46,136 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:20:46,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-09 05:20:46,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:20:46 BoogieIcfgContainer [2020-12-09 05:20:46,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:20:46,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:20:46,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:20:46,166 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:20:46,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:42" (3/4) ... [2020-12-09 05:20:46,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:20:46,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:20:46,169 INFO L168 Benchmark]: Toolchain (without parser) took 4259.64 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.5 MB in the beginning and 98.0 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:20:46,169 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:20:46,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.69 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 63.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:20:46,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.26 ms. Allocated memory is still 102.8 MB. Free memory was 63.2 MB in the beginning and 61.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:20:46,171 INFO L168 Benchmark]: Boogie Preprocessor took 15.69 ms. Allocated memory is still 102.8 MB. Free memory was 61.8 MB in the beginning and 60.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:20:46,171 INFO L168 Benchmark]: RCFGBuilder took 219.70 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 47.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:20:46,172 INFO L168 Benchmark]: TraceAbstraction took 3828.55 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 81.8 MB in the beginning and 99.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:20:46,172 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:20:46,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 157.69 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 63.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.26 ms. Allocated memory is still 102.8 MB. Free memory was 63.2 MB in the beginning and 61.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.69 ms. Allocated memory is still 102.8 MB. Free memory was 61.8 MB in the beginning and 60.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 219.70 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 47.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3828.55 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 81.8 MB in the beginning and 99.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.70 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 16, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 42 SDs, 0 SdLazy, 183 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 3905 SizeOfPredicates, 3 NumberOfNonLiveVariables, 156 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 0.2.0-7b2dab5 [2020-12-09 05:20:47,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:20:47,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:20:47,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:20:47,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:20:47,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:20:47,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:20:47,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:20:47,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:20:47,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:20:47,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:20:47,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:20:47,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:20:47,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:20:47,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:20:47,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:20:47,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:20:47,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:20:47,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:20:47,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:20:47,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:20:47,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:20:47,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:20:47,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:20:47,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:20:47,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:20:47,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:20:47,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:20:47,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:20:47,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:20:47,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:20:47,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:20:47,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:20:47,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:20:47,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:20:47,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:20:47,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:20:47,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:20:47,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:20:47,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:20:47,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:20:47,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 05:20:47,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:20:47,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:20:47,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:20:47,777 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:20:47,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:20:47,778 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:20:47,778 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:20:47,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:20:47,778 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:20:47,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:20:47,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:20:47,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:20:47,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:20:47,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:20:47,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:20:47,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:20:47,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:20:47,782 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_3bece773-a569-4972-86c8-d3137c29123e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ee9428aad4e911e10cde7de8379310dde1b70a [2020-12-09 05:20:48,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:20:48,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:20:48,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:20:48,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:20:48,028 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:20:48,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/../../sv-benchmarks/c/bitvector/interleave_bits.i [2020-12-09 05:20:48,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/fb800aa7b/df57cbcd297349b783286a5ccef4ea3b/FLAGffb500284 [2020-12-09 05:20:48,431 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:20:48,431 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i [2020-12-09 05:20:48,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/fb800aa7b/df57cbcd297349b783286a5ccef4ea3b/FLAGffb500284 [2020-12-09 05:20:48,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/data/fb800aa7b/df57cbcd297349b783286a5ccef4ea3b [2020-12-09 05:20:48,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:20:48,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:20:48,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:20:48,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:20:48,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:20:48,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c08cc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48, skipping insertion in model container [2020-12-09 05:20:48,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:20:48,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:20:48,561 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2020-12-09 05:20:48,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:20:48,582 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:20:48,591 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2020-12-09 05:20:48,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:20:48,615 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:20:48,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48 WrapperNode [2020-12-09 05:20:48,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:20:48,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:20:48,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:20:48,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:20:48,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:20:48,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:20:48,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:20:48,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:20:48,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... [2020-12-09 05:20:48,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:20:48,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:20:48,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:20:48,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:20:48,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 05:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:20:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:20:48,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:20:48,917 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:20:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:48 BoogieIcfgContainer [2020-12-09 05:20:48,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:20:48,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:20:48,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:20:48,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:20:48,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:20:48" (1/3) ... [2020-12-09 05:20:48,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d8623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:48, skipping insertion in model container [2020-12-09 05:20:48,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:48" (2/3) ... [2020-12-09 05:20:48,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d8623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:48, skipping insertion in model container [2020-12-09 05:20:48,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:48" (3/3) ... [2020-12-09 05:20:48,926 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2020-12-09 05:20:48,940 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:20:48,943 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:20:48,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:20:48,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:20:48,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:20:48,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:20:48,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:20:48,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:20:48,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:20:48,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:20:48,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:20:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 05:20:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:20:48,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:48,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:20:48,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-09 05:20:49,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:20:49,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662354000] [2020-12-09 05:20:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:49,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:20:49,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:20:49,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662354000] [2020-12-09 05:20:49,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:20:49,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:20:49,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339399847] [2020-12-09 05:20:49,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:20:49,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:20:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:20:49,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:20:49,155 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-12-09 05:20:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:49,174 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-12-09 05:20:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:20:49,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 05:20:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:49,181 INFO L225 Difference]: With dead ends: 18 [2020-12-09 05:20:49,181 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 05:20:49,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:20:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 05:20:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 05:20:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 05:20:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 05:20:49,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 05:20:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:49,206 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 05:20:49,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:20:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 05:20:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:20:49,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:49,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:20:49,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:20:49,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-09 05:20:49,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:20:49,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390218993] [2020-12-09 05:20:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:20:49,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390218993] [2020-12-09 05:20:49,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1984935493] [2020-12-09 05:20:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:20:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:20:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484785357] [2020-12-09 05:20:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:49,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:20:49,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:49,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:20:49,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2020-12-09 05:20:49,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260878612] [2020-12-09 05:20:49,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:20:49,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:20:49,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:20:49,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:20:49,635 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2020-12-09 05:20:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:49,663 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-09 05:20:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:20:49,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-12-09 05:20:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:49,663 INFO L225 Difference]: With dead ends: 15 [2020-12-09 05:20:49,663 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 05:20:49,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:20:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 05:20:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 05:20:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 05:20:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 05:20:49,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-12-09 05:20:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:49,666 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 05:20:49,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:20:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 05:20:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:20:49,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:49,667 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-12-09 05:20:50,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:20:50,271 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:50,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2020-12-09 05:20:50,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:20:50,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242562731] [2020-12-09 05:20:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:50,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 05:20:50,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242562731] [2020-12-09 05:20:50,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035065207] [2020-12-09 05:20:50,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:20:50,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 05:20:50,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:50,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 05:20:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455624846] [2020-12-09 05:20:50,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:50,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 05:20:50,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:50,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 05:20:50,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:50,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:20:50,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2020-12-09 05:20:50,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327555345] [2020-12-09 05:20:50,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 05:20:50,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:20:50,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 05:20:50,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-09 05:20:50,687 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 16 states. [2020-12-09 05:20:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:50,898 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-12-09 05:20:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 05:20:50,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 10 [2020-12-09 05:20:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:50,899 INFO L225 Difference]: With dead ends: 21 [2020-12-09 05:20:50,899 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 05:20:50,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2020-12-09 05:20:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 05:20:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 05:20:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 05:20:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 05:20:50,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-12-09 05:20:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:50,903 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 05:20:50,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 05:20:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 05:20:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:20:50,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:50,903 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2020-12-09 05:20:51,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:20:51,506 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:51,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times [2020-12-09 05:20:51,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:20:51,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056473394] [2020-12-09 05:20:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:51,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 05:20:51,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:51,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:51,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056473394] [2020-12-09 05:20:51,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1191842821] [2020-12-09 05:20:51,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:20:52,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 05:20:52,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:52,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 05:20:52,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:52,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:52,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868730046] [2020-12-09 05:20:52,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:52,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 05:20:52,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:20:52,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 05:20:52,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:52,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:20:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:52,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:20:52,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 34 [2020-12-09 05:20:52,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469804697] [2020-12-09 05:20:52,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-09 05:20:52,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:20:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-09 05:20:52,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=791, Unknown=0, NotChecked=0, Total=1122 [2020-12-09 05:20:52,505 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 34 states. [2020-12-09 05:20:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:20:53,534 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2020-12-09 05:20:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-09 05:20:53,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 16 [2020-12-09 05:20:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:20:53,535 INFO L225 Difference]: With dead ends: 33 [2020-12-09 05:20:53,535 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 05:20:53,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=567, Invalid=1413, Unknown=0, NotChecked=0, Total=1980 [2020-12-09 05:20:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 05:20:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 05:20:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 05:20:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 05:20:53,541 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 16 [2020-12-09 05:20:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:20:53,541 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 05:20:53,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-09 05:20:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 05:20:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 05:20:53,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:20:53,542 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2020-12-09 05:20:54,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:20:54,145 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:20:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:20:54,146 INFO L82 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times [2020-12-09 05:20:54,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:20:54,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131569733] [2020-12-09 05:20:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:20:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:20:54,271 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-09 05:20:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:20:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:20:55,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:21:37,618 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 [2020-12-09 05:21:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-12-09 05:21:37,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131569733] [2020-12-09 05:21:37,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1833451042] [2020-12-09 05:21:37,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:21:37,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:21:37,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:21:37,855 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-09 05:21:37,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:21:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:38,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:21:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-12-09 05:21:38,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828421862] [2020-12-09 05:21:38,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/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 [2020-12-09 05:21:38,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:21:38,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:21:38,580 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-09 05:21:38,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:21:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:39,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:21:43,754 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-12-09 05:21:45,164 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 167 [2020-12-09 05:21:46,680 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 175 [2020-12-09 05:21:48,320 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-12-09 05:21:50,124 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-12-09 05:21:52,098 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 199 [2020-12-09 05:21:54,245 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-12-09 05:21:56,626 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2020-12-09 05:21:59,179 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2020-12-09 05:22:02,000 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 231 [2020-12-09 05:22:05,055 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 239 [2020-12-09 05:22:08,357 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 247 [2020-12-09 05:22:11,931 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 255 [2020-12-09 05:22:35,766 WARN L197 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 266 DAG size of output: 265 [2020-12-09 05:22:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:35,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:22:35,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20, 20, 21, 21] total 55 [2020-12-09 05:22:35,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530521667] [2020-12-09 05:22:35,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-12-09 05:22:35,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:22:35,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-12-09 05:22:35,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=1970, Unknown=1, NotChecked=104, Total=2970 [2020-12-09 05:22:35,804 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 55 states. [2020-12-09 05:22:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:38,839 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-09 05:22:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 05:22:38,839 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 22 [2020-12-09 05:22:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:38,840 INFO L225 Difference]: With dead ends: 31 [2020-12-09 05:22:38,840 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:22:38,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 52 SyntacticMatches, 22 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 100.8s TimeCoverageRelationStatistics Valid=933, Invalid=2040, Unknown=1, NotChecked=106, Total=3080 [2020-12-09 05:22:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:22:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:22:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:22:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:22:38,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 05:22:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:38,841 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:22:38,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-12-09 05:22:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:22:38,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:22:39,443 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,12 mathsat -unsat_core_generation=3 [2020-12-09 05:22:39,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:22:40,842 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 258 DAG size of output: 211 [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 05:22:40,845 INFO L262 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-12-09 05:22:40,846 INFO L265 CegarLoopResult]: At program point L16-2(lines 1 59) the Hoare annotation is: true [2020-12-09 05:22:40,846 INFO L258 CegarLoopResult]: At program point L41-2(lines 41 44) the Hoare annotation is: (let ((.cse9 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse12 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (let ((.cse15 (bvor (bvor (bvor (bvor (_ bv0 32) (bvor (bvshl (bvand .cse9 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse12 (_ bv1 32)) (_ bv1 32)))) (bvor (bvshl (bvand .cse9 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse12 (_ bv2 32)) (_ bv2 32)))) (bvor (bvshl (bvand .cse9 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse12 (_ bv4 32)) (_ bv3 32)))) (bvor (bvshl (bvand .cse9 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse12 (_ bv8 32)) (_ bv4 32)))))) (let ((.cse1 (bvor .cse15 (bvor (bvshl (bvand .cse9 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse12 (_ bv16 32)) (_ bv5 32)))))) (let ((.cse0 (bvor .cse1 (bvor (bvshl (bvand .cse9 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse12 (_ bv32 32)) (_ bv6 32)))))) (let ((.cse8 (bvor (bvor (bvor .cse0 (bvor (bvshl (bvand .cse9 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse12 (_ bv64 32)) (_ bv7 32)))) (bvor (bvshl (bvand .cse9 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse12 (_ bv128 32)) (_ bv8 32)))) (bvor (bvshl (bvand .cse9 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse12 (_ bv256 32)) (_ bv9 32)))))) (let ((.cse18 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32))) (.cse6 (bvor .cse8 (bvor (bvshl (bvand .cse9 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse12 (_ bv512 32)) (_ bv10 32))))) (.cse16 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967294 32))) (.cse7 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967293 32))) (.cse13 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967292 32)))) (let ((.cse14 (let ((.cse21 (bvshl (_ bv1 32) .cse13))) (bvor (bvshl (bvand .cse9 .cse21) .cse13) (bvshl (bvand .cse12 .cse21) .cse7)))) (.cse3 (let ((.cse20 (bvshl (_ bv1 32) .cse7))) (bvor (bvshl (bvand .cse9 .cse20) .cse7) (bvshl (bvand .cse12 .cse20) .cse16)))) (.cse2 (bvor .cse6 (bvor (bvshl (bvand .cse9 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse12 (_ bv1024 32)) (_ bv11 32))))) (.cse4 (let ((.cse19 (bvshl (_ bv1 32) .cse16))) (bvor (bvshl (bvand .cse9 .cse19) .cse16) (bvshl (bvand .cse12 .cse19) .cse18)))) (.cse5 (let ((.cse17 (bvshl (_ bv1 32) .cse18))) (bvor (bvshl (bvand .cse9 .cse17) .cse18) (bvshl (bvand .cse12 .cse17) ULTIMATE.start_main_~i~0))))) (or (and (= ULTIMATE.start_main_~z~0 .cse0) (= (_ bv6 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv5 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse1)) (and (= (_ bv14 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 (bvor (bvor (bvor .cse2 .cse3) .cse4) .cse5))) (and (= ULTIMATE.start_main_~z~0 .cse6) (= (_ bv10 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv12 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 (bvor .cse2 .cse5))) (and (= (_ bv11 32) ULTIMATE.start_main_~i~0) (= .cse2 ULTIMATE.start_main_~z~0)) (and (= (_ bv8 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 (bvor (bvor .cse0 .cse4) .cse5))) (and (= ULTIMATE.start_main_~z~0 (bvor (bvor (bvor (_ bv0 32) .cse3) .cse4) .cse5)) (= .cse7 (_ bv0 32))) (and (= (_ bv9 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse8)) (and (= (bvor (bvor (bvor (bvor (bvor .cse2 (let ((.cse11 (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967291 32)))) (let ((.cse10 (bvshl (_ bv1 32) .cse11))) (bvor (bvshl (bvand .cse9 .cse10) .cse11) (bvshl (bvand .cse12 .cse10) .cse13))))) .cse14) .cse3) .cse4) .cse5) ULTIMATE.start_main_~z~0) (= (_ bv16 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv4 32) ULTIMATE.start_main_~i~0) (= .cse15 ULTIMATE.start_main_~z~0)) (and (= ULTIMATE.start_main_~z~0 (bvor (bvor (_ bv0 32) .cse4) .cse5)) (= .cse16 (_ bv0 32))) (and (= (bvor (bvor (bvor (bvor .cse2 .cse14) .cse3) .cse4) .cse5) ULTIMATE.start_main_~z~0) (= (_ bv15 32) ULTIMATE.start_main_~i~0)) (and (= (bvor .cse0 .cse5) ULTIMATE.start_main_~z~0) (= (_ bv7 32) ULTIMATE.start_main_~i~0)) (and (= (bvor (bvor .cse2 .cse4) .cse5) ULTIMATE.start_main_~z~0) (= (_ bv13 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv1 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 (bvor (_ bv0 32) .cse5))) (and (= (_ bv0 32) ULTIMATE.start_main_~i~0) (= (_ bv0 32) ULTIMATE.start_main_~z~0)))))))))) [2020-12-09 05:22:40,846 INFO L262 CegarLoopResult]: For program point L41-3(lines 41 44) no Hoare annotation was computed. [2020-12-09 05:22:40,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:22:40 BoogieIcfgContainer [2020-12-09 05:22:40,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:22:40,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:22:40,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:22:40,877 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:22:40,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:48" (3/4) ... [2020-12-09 05:22:40,880 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:22:40,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 05:22:40,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:22:40,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:22:40,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:22:40,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3bece773-a569-4972-86c8-d3137c29123e/bin/utaipan/witness.graphml [2020-12-09 05:22:40,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:22:40,925 INFO L168 Benchmark]: Toolchain (without parser) took 112477.02 ms. Allocated memory was 56.6 MB in the beginning and 98.6 MB in the end (delta: 41.9 MB). Free memory was 36.0 MB in the beginning and 28.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,925 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:22:40,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 41.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.60 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 66.1 MB in the end (delta: -25.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,927 INFO L168 Benchmark]: Boogie Preprocessor took 27.29 ms. Allocated memory is still 81.8 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 933.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,927 INFO L168 Benchmark]: RCFGBuilder took 242.93 ms. Allocated memory is still 81.8 MB. Free memory was 64.8 MB in the beginning and 52.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,928 INFO L168 Benchmark]: TraceAbstraction took 111956.81 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 52.6 MB in the beginning and 34.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,928 INFO L168 Benchmark]: Witness Printer took 47.13 ms. Allocated memory is still 98.6 MB. Free memory was 34.9 MB in the beginning and 28.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:40,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 41.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.60 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 66.1 MB in the end (delta: -25.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.29 ms. Allocated memory is still 81.8 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 933.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 242.93 ms. Allocated memory is still 81.8 MB. Free memory was 64.8 MB in the beginning and 52.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 111956.81 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 52.6 MB in the beginning and 34.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. * Witness Printer took 47.13 ms. Allocated memory is still 98.6 MB. Free memory was 34.9 MB in the beginning and 28.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((((((z == ~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))) && 6bv32 == i) || (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))))) || (14bv32 == 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), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967293bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967294bv32)))), ~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 == ~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)) || (8bv32 == i && z == ~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), ~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 == ~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967293bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967294bv32)))), ~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))) && ~bvadd64(i, 4294967293bv32) == 0bv32)) || (9bv32 == i && z == ~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(~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), ~bvshl32(1bv32, ~bvadd64(i, 4294967291bv32))), ~bvadd64(i, 4294967291bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967291bv32))), ~bvadd64(i, 4294967292bv32)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967292bv32))), ~bvadd64(i, 4294967292bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967292bv32))), ~bvadd64(i, 4294967293bv32)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967293bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967294bv32)))), ~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 && 16bv32 == i)) || (4bv32 == i && ~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))) == z)) || (z == ~bvor32(~bvor32(0bv32, ~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))) && ~bvadd64(i, 4294967294bv32) == 0bv32)) || (~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), ~bvshl32(1bv32, ~bvadd64(i, 4294967292bv32))), ~bvadd64(i, 4294967292bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967292bv32))), ~bvadd64(i, 4294967293bv32)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967293bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967293bv32))), ~bvadd64(i, 4294967294bv32)))), ~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 && 15bv32 == 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), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), ~bvadd64(i, 4294967295bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967295bv32))), i))) == z && 7bv32 == 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)) || (1bv32 == i && z == ~bvor32(0bv32, ~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))))) || (0bv32 == i && 0bv32 == z) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 110.4s, OverallIterations: 5, TraceHistogramMax: 16, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 57 SDslu, 117 SDs, 0 SdLazy, 498 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 176 SyntacticMatches, 31 SemanticMatches, 123 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 102.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2297 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 455 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 102.4s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 311 ConstructedInterpolants, 3 QuantifiedInterpolants, 643670 SizeOfPredicates, 38 NumberOfNonLiveVariables, 656 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 240/1212 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...