./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:09:50,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:09:50,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:09:50,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:09:50,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:09:50,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:09:50,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:09:50,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:09:50,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:09:50,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:09:50,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:09:50,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:09:50,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:09:50,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:09:50,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:09:50,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:09:50,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:09:50,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:09:50,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:09:50,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:09:50,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:09:50,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:09:50,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:09:50,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:09:50,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:09:50,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:09:50,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:09:50,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:09:50,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:09:50,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:09:50,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:09:50,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:09:50,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:09:50,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:09:50,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:09:50,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:09:50,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:09:50,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:09:50,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:09:50,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:09:50,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:09:50,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:09:50,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:09:50,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:09:50,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:09:50,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:09:50,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:09:50,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:09:50,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:09:50,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:09:50,250 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:09:50,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:09:50,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:09:50,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:09:50,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:09:50,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:09:50,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:09:50,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:09:50,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:09:50,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:09:50,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:09:50,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:09:50,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:09:50,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:09:50,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:09:50,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:09:50,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:09:50,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:09:50,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:09:50,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:09:50,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:09:50,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:09:50,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:09:50,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:09:50,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:09:50,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:09:50,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2021-11-20 07:09:50,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:09:50,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:09:50,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:09:50,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:09:50,541 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:09:50,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/interleave_bits.i [2021-11-20 07:09:50,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/0ee5a9371/05efb059249e4d1caa3682289b42f96a/FLAG0301a6801 [2021-11-20 07:09:51,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:09:51,068 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i [2021-11-20 07:09:51,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/0ee5a9371/05efb059249e4d1caa3682289b42f96a/FLAG0301a6801 [2021-11-20 07:09:51,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/0ee5a9371/05efb059249e4d1caa3682289b42f96a [2021-11-20 07:09:51,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:09:51,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:09:51,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:09:51,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:09:51,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:09:51,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6ed003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51, skipping insertion in model container [2021-11-20 07:09:51,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:09:51,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:09:51,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2021-11-20 07:09:51,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:09:51,751 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:09:51,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2021-11-20 07:09:51,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:09:51,814 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:09:51,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51 WrapperNode [2021-11-20 07:09:51,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:09:51,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:09:51,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:09:51,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:09:51,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,847 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2021-11-20 07:09:51,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:09:51,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:09:51,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:09:51,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:09:51,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:09:51,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:09:51,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:09:51,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:09:51,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (1/1) ... [2021-11-20 07:09:51,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:09:51,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:51,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:09:51,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:09:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:09:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:09:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:09:51,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:09:52,010 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:09:52,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:09:52,095 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:09:52,101 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:09:52,101 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:09:52,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:52 BoogieIcfgContainer [2021-11-20 07:09:52,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:09:52,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:09:52,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:09:52,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:09:52,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:09:51" (1/3) ... [2021-11-20 07:09:52,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f9deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:52, skipping insertion in model container [2021-11-20 07:09:52,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:51" (2/3) ... [2021-11-20 07:09:52,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f9deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:52, skipping insertion in model container [2021-11-20 07:09:52,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:52" (3/3) ... [2021-11-20 07:09:52,111 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2021-11-20 07:09:52,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:09:52,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:09:52,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:09:52,171 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:09:52,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:09:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 07:09:52,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:52,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:09:52,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-20 07:09:52,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:52,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764405394] [2021-11-20 07:09:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:52,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:52,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:52,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764405394] [2021-11-20 07:09:52,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764405394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:52,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:52,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:09:52,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104919352] [2021-11-20 07:09:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:52,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:09:52,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:52,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:09:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:09:52,453 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:52,473 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-11-20 07:09:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:09:52,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 07:09:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:52,483 INFO L225 Difference]: With dead ends: 20 [2021-11-20 07:09:52,483 INFO L226 Difference]: Without dead ends: 8 [2021-11-20 07:09:52,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:09:52,490 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:52,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:09:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-20 07:09:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-20 07:09:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-20 07:09:52,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-20 07:09:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:52,521 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-20 07:09:52,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-20 07:09:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:09:52,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:52,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:09:52,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:09:52,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-11-20 07:09:52,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:52,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564434226] [2021-11-20 07:09:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:52,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:52,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:52,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564434226] [2021-11-20 07:09:52,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564434226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:52,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867469661] [2021-11-20 07:09:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:52,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:52,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:09:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:52,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:09:52,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:52,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:09:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:52,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867469661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:09:52,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:09:52,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 07:09:52,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010469350] [2021-11-20 07:09:52,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:09:52,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:52,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:52,871 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:52,934 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-20 07:09:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:09:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:09:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:52,936 INFO L225 Difference]: With dead ends: 15 [2021-11-20 07:09:52,936 INFO L226 Difference]: Without dead ends: 11 [2021-11-20 07:09:52,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:09:52,938 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:52,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:09:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-20 07:09:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-20 07:09:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-20 07:09:52,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2021-11-20 07:09:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:52,944 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-20 07:09:52,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-20 07:09:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:09:52,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:52,946 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-11-20 07:09:52,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:09:53,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 07:09:53,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2021-11-20 07:09:53,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:53,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342579502] [2021-11-20 07:09:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:53,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:53,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:53,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342579502] [2021-11-20 07:09:53,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342579502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:53,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392588174] [2021-11-20 07:09:53,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:09:53,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:53,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:53,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:09:53,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:09:53,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:09:53,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:09:53,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:53,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:09:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:53,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392588174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:09:53,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:09:53,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-20 07:09:53,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222477445] [2021-11-20 07:09:53,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:09:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:09:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:09:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:09:53,649 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:54,037 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-11-20 07:09:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:09:54,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 07:09:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:54,038 INFO L225 Difference]: With dead ends: 21 [2021-11-20 07:09:54,038 INFO L226 Difference]: Without dead ends: 17 [2021-11-20 07:09:54,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:09:54,040 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:54,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:09:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-20 07:09:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-20 07:09:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-20 07:09:54,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-11-20 07:09:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:54,046 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-20 07:09:54,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-20 07:09:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:09:54,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:54,047 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2021-11-20 07:09:54,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:09:54,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:54,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times [2021-11-20 07:09:54,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:54,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504533609] [2021-11-20 07:09:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:54,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:54,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504533609] [2021-11-20 07:09:54,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504533609] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783467639] [2021-11-20 07:09:54,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:09:54,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:54,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:54,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:09:54,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-20 07:09:54,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:09:54,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 07:09:54,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:54,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:09:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783467639] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:09:55,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:09:55,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-20 07:09:55,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684416983] [2021-11-20 07:09:55,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:09:55,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 07:09:55,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 07:09:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:09:55,039 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:55,619 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-20 07:09:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:09:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:09:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:55,621 INFO L225 Difference]: With dead ends: 27 [2021-11-20 07:09:55,622 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 07:09:55,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:09:55,623 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:55,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:09:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 07:09:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 07:09:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-20 07:09:55,628 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2021-11-20 07:09:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:55,629 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-20 07:09:55,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:55,629 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-20 07:09:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 07:09:55,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:55,630 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2021-11-20 07:09:55,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:09:55,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:55,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times [2021-11-20 07:09:55,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:55,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498174073] [2021-11-20 07:09:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:55,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:09:55,877 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:09:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:09:55,948 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:09:55,949 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:09:55,950 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:09:55,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:09:55,955 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1] [2021-11-20 07:09:55,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:09:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:09:56 BoogieIcfgContainer [2021-11-20 07:09:56,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:09:56,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:09:56,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:09:56,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:09:56,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:52" (3/4) ... [2021-11-20 07:09:56,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:09:56,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:09:56,006 INFO L158 Benchmark]: Toolchain (without parser) took 4547.77ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 50.0MB in the beginning and 44.9MB in the end (delta: 5.1MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2021-11-20 07:09:56,007 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:09:56,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.26ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 65.7MB in the end (delta: -15.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 07:09:56,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.21ms. Allocated memory is still 92.3MB. Free memory was 65.7MB in the beginning and 64.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:09:56,008 INFO L158 Benchmark]: Boogie Preprocessor took 20.69ms. Allocated memory is still 92.3MB. Free memory was 64.1MB in the beginning and 62.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:09:56,010 INFO L158 Benchmark]: RCFGBuilder took 233.04ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 54.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:09:56,011 INFO L158 Benchmark]: TraceAbstraction took 3896.32ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 44.9MB in the end (delta: 8.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2021-11-20 07:09:56,011 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 111.1MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:09:56,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.26ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 65.7MB in the end (delta: -15.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.21ms. Allocated memory is still 92.3MB. Free memory was 65.7MB in the beginning and 64.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.69ms. Allocated memory is still 92.3MB. Free memory was 64.1MB in the beginning and 62.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 233.04ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 54.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3896.32ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 44.9MB in the end (delta: 8.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 111.1MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: 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 64, overapproximation of bitwiseAnd at line 55. Possible FailurePath: [L42] unsigned short x = __VERIFIER_nondet_ushort(); [L43] unsigned short y = __VERIFIER_nondet_ushort(); [L44] unsigned int xx; [L45] unsigned int yy; [L46] unsigned int zz; [L47] unsigned int z = 0; [L48] unsigned int i = 0; VAL [i=0, z=0] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=1] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=2] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=3] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=4] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=5] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=6] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=7] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=8] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=9] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=10] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=11] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=12] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=13] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=14] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=15] [L49] COND TRUE i < sizeof(x) * 8 [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=16] [L49] COND FALSE !(i < sizeof(x) * 8) VAL [i=16] [L53] xx = x [L54] yy = y [L55] xx = (xx | (xx << 8u)) & 16711935U [L56] xx = (xx | (xx << 4u)) & 252645135U [L57] xx = (xx | (xx << 2u)) & 858993459U [L58] xx = (xx | (xx << 1u)) & 1431655765U [L59] yy = (yy | (yy << 8u)) & 16711935U [L60] yy = (yy | (yy << 4u)) & 252645135U [L61] yy = (yy | (yy << 2u)) & 858993459U [L62] yy = (yy | (yy << 1u)) & 1431655765U [L64] zz = xx | (yy << 1U) [L66] CALL __VERIFIER_assert(z == zz) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 28 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 39, 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, 1.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 399 SizeOfPredicates, 3 NumberOfNonLiveVariables, 144 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 [2021-11-20 07:09:56,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:09:58,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:09:58,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:09:58,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:09:58,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:09:58,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:09:58,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:09:58,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:09:58,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:09:58,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:09:58,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:09:58,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:09:58,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:09:58,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:09:58,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:09:58,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:09:58,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:09:58,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:09:58,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:09:58,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:09:58,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:09:58,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:09:58,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:09:58,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:09:58,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:09:58,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:09:58,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:09:58,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:09:58,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:09:58,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:09:58,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:09:58,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:09:58,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:09:58,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:09:58,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:09:58,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:09:58,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:09:58,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:09:58,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:09:58,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:09:58,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:09:58,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 07:09:58,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:09:58,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:09:58,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:09:58,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:09:58,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:09:58,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:09:58,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:09:58,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:09:58,644 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:09:58,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:09:58,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:09:58,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:09:58,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:09:58,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:09:58,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:09:58,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:09:58,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:09:58,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:09:58,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:09:58,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:09:58,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:09:58,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:09:58,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:09:58,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:09:58,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:09:58,650 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:09:58,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:09:58,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:09:58,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:09:58,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:09:58,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:09:58,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:09:58,651 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_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2021-11-20 07:09:59,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:09:59,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:09:59,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:09:59,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:09:59,051 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:09:59,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/interleave_bits.i [2021-11-20 07:09:59,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/b00199413/49ec2dca772240c6a9d039611cbd52c6/FLAG338c0e70d [2021-11-20 07:09:59,669 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:09:59,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i [2021-11-20 07:09:59,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/b00199413/49ec2dca772240c6a9d039611cbd52c6/FLAG338c0e70d [2021-11-20 07:10:00,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/data/b00199413/49ec2dca772240c6a9d039611cbd52c6 [2021-11-20 07:10:00,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:10:00,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:10:00,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:00,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:10:00,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:10:00,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51548102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00, skipping insertion in model container [2021-11-20 07:10:00,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:10:00,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:00,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2021-11-20 07:10:00,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:00,302 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:10:00,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2021-11-20 07:10:00,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:00,388 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:10:00,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00 WrapperNode [2021-11-20 07:10:00,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:00,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:00,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:10:00,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:10:00,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,417 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2021-11-20 07:10:00,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:00,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:10:00,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:10:00,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:10:00,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:10:00,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:10:00,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:10:00,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:10:00,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (1/1) ... [2021-11-20 07:10:00,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:00,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:00,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:10:00,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:10:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:10:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:10:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:10:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:10:00,627 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:10:00,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:10:00,825 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:10:00,830 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:10:00,831 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:10:00,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:00 BoogieIcfgContainer [2021-11-20 07:10:00,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:10:00,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:10:00,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:10:00,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:10:00,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:10:00" (1/3) ... [2021-11-20 07:10:00,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d3703e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:00, skipping insertion in model container [2021-11-20 07:10:00,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:00" (2/3) ... [2021-11-20 07:10:00,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d3703e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:00, skipping insertion in model container [2021-11-20 07:10:00,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:00" (3/3) ... [2021-11-20 07:10:00,840 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2021-11-20 07:10:00,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:10:00,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:10:00,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:10:00,922 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:10:00,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:10:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 07:10:00,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:00,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:10:00,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:00,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-20 07:10:00,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:00,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481206111] [2021-11-20 07:10:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:00,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:00,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:01,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:10:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:01,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:10:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:01,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:01,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:01,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481206111] [2021-11-20 07:10:01,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481206111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:01,217 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:01,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 07:10:01,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170429414] [2021-11-20 07:10:01,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:01,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:10:01,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:10:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:01,262 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:01,294 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-20 07:10:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:10:01,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 07:10:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:01,304 INFO L225 Difference]: With dead ends: 21 [2021-11-20 07:10:01,304 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 07:10:01,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:10:01,313 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:01,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:10:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 07:10:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 07:10:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-20 07:10:01,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-20 07:10:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:01,355 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-20 07:10:01,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-20 07:10:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 07:10:01,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:01,357 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:01,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:01,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:01,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-11-20 07:10:01,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:01,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321177577] [2021-11-20 07:10:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:01,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:01,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:01,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:10:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:10:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:01,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:01,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:01,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321177577] [2021-11-20 07:10:01,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321177577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:01,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:10:01,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 07:10:01,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825848652] [2021-11-20 07:10:01,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:01,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:10:01,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:10:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:10:01,785 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:01,894 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-20 07:10:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:10:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 07:10:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:01,897 INFO L225 Difference]: With dead ends: 17 [2021-11-20 07:10:01,897 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 07:10:01,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:10:01,899 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:01,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:10:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 07:10:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 07:10:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-20 07:10:01,914 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-20 07:10:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-20 07:10:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-20 07:10:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:10:01,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:01,915 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:01,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:02,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:02,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-11-20 07:10:02,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:02,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307478017] [2021-11-20 07:10:02,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:10:02,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:02,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:02,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:10:02,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:10:02,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:02,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:10:02,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:02,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:02,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:02,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307478017] [2021-11-20 07:10:02,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307478017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:02,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:10:02,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-20 07:10:02,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631990675] [2021-11-20 07:10:02,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:02,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:10:02,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:10:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:10:02,576 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:02,942 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-11-20 07:10:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:10:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 07:10:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:02,946 INFO L225 Difference]: With dead ends: 25 [2021-11-20 07:10:02,946 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 07:10:02,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:10:02,949 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:02,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:10:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 07:10:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-20 07:10:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-20 07:10:02,963 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-11-20 07:10:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:02,963 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-20 07:10:02,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-20 07:10:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:10:02,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:02,965 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:02,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:03,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:03,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:03,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2078182539, now seen corresponding path program 3 times [2021-11-20 07:10:03,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:03,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452221098] [2021-11-20 07:10:03,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:10:03,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:03,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:03,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:03,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:10:03,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 07:10:03,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:03,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 07:10:03,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:03,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:04,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452221098] [2021-11-20 07:10:04,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452221098] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:04,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:10:04,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-20 07:10:04,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625521702] [2021-11-20 07:10:04,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:04,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 07:10:04,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 07:10:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2021-11-20 07:10:04,343 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:06,429 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2021-11-20 07:10:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 07:10:06,430 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 07:10:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:06,431 INFO L225 Difference]: With dead ends: 41 [2021-11-20 07:10:06,431 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 07:10:06,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=622, Invalid=1540, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 07:10:06,438 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:06,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 57 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:10:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 07:10:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-20 07:10:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-11-20 07:10:06,448 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 20 [2021-11-20 07:10:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:06,449 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-11-20 07:10:06,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-11-20 07:10:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 07:10:06,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:06,451 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:06,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-20 07:10:06,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:06,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times [2021-11-20 07:10:06,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:10:06,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854716828] [2021-11-20 07:10:06,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:10:06,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:10:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:10:06,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:10:06,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:10:06,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:10:06,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:06,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 07:10:06,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:08,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:56,236 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x~0#1| (_ BitVec 16)) (|ULTIMATE.start_main_~y~0#1| (_ BitVec 16))) (let ((.cse0 ((_ zero_extend 16) |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ zero_extend 16) |ULTIMATE.start_main_~y~0#1|))) (= (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 .cse1 (_ bv1 32)) (_ bv1 32)))) (bvor (bvshl (bvand .cse0 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse1 (_ bv2 32)) (_ bv2 32)))) (bvor (bvshl (bvand .cse0 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse1 (_ bv4 32)) (_ bv3 32)))) (bvor (bvshl (bvand .cse0 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse1 (_ bv8 32)) (_ bv4 32)))) (bvor (bvshl (bvand .cse0 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse1 (_ bv16 32)) (_ bv5 32)))) (bvor (bvshl (bvand .cse0 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse1 (_ bv32 32)) (_ bv6 32)))) (bvor (bvshl (bvand .cse0 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse1 (_ bv64 32)) (_ bv7 32)))) (bvor (bvshl (bvand .cse0 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse1 (_ bv128 32)) (_ bv8 32)))) (bvor (bvshl (bvand .cse0 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse1 (_ bv256 32)) (_ bv9 32)))) (bvor (bvshl (bvand .cse0 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse1 (_ bv512 32)) (_ bv10 32)))) (bvor (bvshl (bvand .cse0 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse1 (_ bv1024 32)) (_ bv11 32)))) (bvor (bvshl (bvand .cse0 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse1 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse0 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse1 (_ bv4096 32)) (_ bv13 32)))) (bvor (bvshl (bvand .cse0 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse1 (_ bv8192 32)) (_ bv14 32)))) (bvor (bvshl (bvand .cse0 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse1 (_ bv16384 32)) (_ bv15 32)))) (bvor (bvshl (bvand .cse0 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse1 (_ bv32768 32)) (_ bv16 32)))) (let ((.cse31 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv15 32)))) (bvor (let ((.cse29 (bvadd (_ bv14 32) |c_ULTIMATE.start_main_~i~0#1|))) (bvor (let ((.cse27 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv13 32)))) (bvor (let ((.cse25 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv12 32)))) (bvor (let ((.cse23 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv11 32)))) (bvor (let ((.cse21 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv10 32)))) (bvor (let ((.cse19 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv9 32)))) (bvor (let ((.cse17 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv8 32)))) (bvor (let ((.cse15 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv7 32)))) (bvor (let ((.cse13 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv6 32)))) (bvor (let ((.cse11 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv5 32)))) (bvor (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (bvor (let ((.cse7 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv3 32)))) (bvor (let ((.cse5 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv2 32)))) (bvor (let ((.cse3 (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv1 32)))) (bvor (bvor |c_ULTIMATE.start_main_~z~0#1| (let ((.cse2 (bvshl (_ bv1 32) |c_ULTIMATE.start_main_~i~0#1|))) (bvor (bvshl (bvand .cse0 .cse2) |c_ULTIMATE.start_main_~i~0#1|) (bvshl (bvand .cse1 .cse2) .cse3)))) (let ((.cse4 (bvshl (_ bv1 32) .cse3))) (bvor (bvshl (bvand .cse0 .cse4) .cse3) (bvshl (bvand .cse1 .cse4) .cse5))))) (let ((.cse6 (bvshl (_ bv1 32) .cse5))) (bvor (bvshl (bvand .cse0 .cse6) .cse5) (bvshl (bvand .cse1 .cse6) .cse7))))) (let ((.cse8 (bvshl (_ bv1 32) .cse7))) (bvor (bvshl (bvand .cse0 .cse8) .cse7) (bvshl (bvand .cse1 .cse8) .cse9))))) (let ((.cse10 (bvshl (_ bv1 32) .cse9))) (bvor (bvshl (bvand .cse0 .cse10) .cse9) (bvshl (bvand .cse1 .cse10) .cse11))))) (let ((.cse12 (bvshl (_ bv1 32) .cse11))) (bvor (bvshl (bvand .cse0 .cse12) .cse11) (bvshl (bvand .cse1 .cse12) .cse13))))) (let ((.cse14 (bvshl (_ bv1 32) .cse13))) (bvor (bvshl (bvand .cse0 .cse14) .cse13) (bvshl (bvand .cse1 .cse14) .cse15))))) (let ((.cse16 (bvshl (_ bv1 32) .cse15))) (bvor (bvshl (bvand .cse0 .cse16) .cse15) (bvshl (bvand .cse1 .cse16) .cse17))))) (let ((.cse18 (bvshl (_ bv1 32) .cse17))) (bvor (bvshl (bvand .cse0 .cse18) .cse17) (bvshl (bvand .cse1 .cse18) .cse19))))) (let ((.cse20 (bvshl (_ bv1 32) .cse19))) (bvor (bvshl (bvand .cse0 .cse20) .cse19) (bvshl (bvand .cse1 .cse20) .cse21))))) (let ((.cse22 (bvshl (_ bv1 32) .cse21))) (bvor (bvshl (bvand .cse0 .cse22) .cse21) (bvshl (bvand .cse1 .cse22) .cse23))))) (let ((.cse24 (bvshl (_ bv1 32) .cse23))) (bvor (bvshl (bvand .cse0 .cse24) .cse23) (bvshl (bvand .cse1 .cse24) .cse25))))) (let ((.cse26 (bvshl (_ bv1 32) .cse25))) (bvor (bvshl (bvand .cse0 .cse26) .cse25) (bvshl (bvand .cse1 .cse26) .cse27))))) (let ((.cse28 (bvshl (_ bv1 32) .cse27))) (bvor (bvshl (bvand .cse0 .cse28) .cse27) (bvshl (bvand .cse1 .cse28) .cse29))))) (let ((.cse30 (bvshl (_ bv1 32) .cse29))) (bvor (bvshl (bvand .cse0 .cse30) .cse29) (bvshl (bvand .cse1 .cse30) .cse31))))) (let ((.cse32 (bvshl (_ bv1 32) .cse31))) (bvor (bvshl (bvand .cse0 .cse32) .cse31) (bvshl (bvand .cse1 .cse32) (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~i~0#1|))))))))) is different from false [2021-11-20 07:10:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2021-11-20 07:10:56,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:10:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854716828] [2021-11-20 07:10:56,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854716828] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:56,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:10:56,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2021-11-20 07:10:56,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794557742] [2021-11-20 07:10:56,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:56,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-20 07:10:56,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:10:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-20 07:10:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=951, Unknown=1, NotChecked=68, Total=1332 [2021-11-20 07:10:56,295 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:10:58,321 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-11-20 07:10:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:10:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-20 07:10:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:10:58,322 INFO L225 Difference]: With dead ends: 37 [2021-11-20 07:10:58,322 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:10:58,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 48.4s TimeCoverageRelationStatistics Valid=332, Invalid=1003, Unknown=1, NotChecked=70, Total=1406 [2021-11-20 07:10:58,325 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:10:58,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 302 Invalid, 0 Unknown, 19 Unchecked, 1.8s Time] [2021-11-20 07:10:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:10:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:10:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:10:58,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-11-20 07:10:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:10:58,327 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:10:58,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:10:58,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:10:58,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:10:58,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 07:10:58,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:10:58,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:10:59,780 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:10:59,780 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 67) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 26) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-11-20 07:10:59,781 INFO L861 garLoopResultBuilder]: At program point L24-2(lines 23 28) the Hoare annotation is: true [2021-11-20 07:10:59,782 INFO L854 garLoopResultBuilder]: At program point L49-2(lines 49 52) the Hoare annotation is: (let ((.cse6 ((_ zero_extend 16) |ULTIMATE.start_main_~x~0#1|)) (.cse7 ((_ zero_extend 16) |ULTIMATE.start_main_~y~0#1|))) (let ((.cse8 (bvor (_ bv0 32) (bvor (bvshl (bvand .cse6 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse7 (_ bv1 32)) (_ bv1 32)))))) (let ((.cse5 (bvor .cse8 (bvor (bvshl (bvand .cse6 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse7 (_ bv2 32)) (_ bv2 32)))))) (let ((.cse3 (bvor (bvor .cse5 (bvor (bvshl (bvand .cse6 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse7 (_ bv4 32)) (_ bv3 32)))) (bvor (bvshl (bvand .cse6 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse7 (_ bv8 32)) (_ bv4 32)))))) (let ((.cse0 (bvor (bvor .cse3 (bvor (bvshl (bvand .cse6 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse7 (_ bv16 32)) (_ bv5 32)))) (bvor (bvshl (bvand .cse6 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse7 (_ bv32 32)) (_ bv6 32)))))) (let ((.cse14 (bvor .cse0 (bvor (bvshl (bvand .cse6 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse7 (_ bv64 32)) (_ bv7 32)))))) (let ((.cse1 (bvor (bvor .cse14 (bvor (bvshl (bvand .cse6 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse7 (_ bv128 32)) (_ bv8 32)))) (bvor (bvshl (bvand .cse6 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse7 (_ bv256 32)) (_ bv9 32)))))) (let ((.cse16 (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~i~0#1|)) (.cse12 (bvadd |ULTIMATE.start_main_~i~0#1| (_ bv4294967294 32))) (.cse9 (bvor (bvor (bvor (bvor .cse1 (bvor (bvshl (bvand .cse6 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse7 (_ bv512 32)) (_ bv10 32)))) (bvor (bvshl (bvand .cse6 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse7 (_ bv1024 32)) (_ bv11 32)))) (bvor (bvshl (bvand .cse6 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse7 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse6 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse7 (_ bv4096 32)) (_ bv13 32)))))) (let ((.cse2 (bvor .cse9 (bvor (bvshl (bvand .cse6 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse7 (_ bv8192 32)) (_ bv14 32))))) (.cse13 (let ((.cse17 (bvshl (_ bv1 32) .cse12))) (bvor (bvshl (bvand .cse6 .cse17) .cse12) (bvshl (bvand .cse7 .cse17) .cse16)))) (.cse4 (let ((.cse15 (bvshl (_ bv1 32) .cse16))) (bvor (bvshl (bvand .cse6 .cse15) .cse16) (bvshl (bvand .cse7 .cse15) |ULTIMATE.start_main_~i~0#1|))))) (or (and (= |ULTIMATE.start_main_~i~0#1| (_ bv6 32)) (= |ULTIMATE.start_main_~z~0#1| .cse0)) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv9 32)) (= |ULTIMATE.start_main_~z~0#1| .cse1)) (and (= (_ bv14 32) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~z~0#1| .cse2)) (and (= |ULTIMATE.start_main_~z~0#1| (bvor .cse3 .cse4)) (= |ULTIMATE.start_main_~i~0#1| (_ bv5 32))) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv10 32)) (= (bvor .cse1 .cse4) |ULTIMATE.start_main_~z~0#1|)) (and (= .cse5 |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~i~0#1| (_ bv2 32))) (= (bvor (bvor .cse2 (bvor (bvshl (bvand .cse6 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse7 (_ bv16384 32)) (_ bv15 32)))) (bvor (bvshl (bvand .cse6 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse7 (_ bv32768 32)) (_ bv16 32)))) |ULTIMATE.start_main_~z~0#1|) (and (= |ULTIMATE.start_main_~z~0#1| (bvor .cse5 .cse4)) (= |ULTIMATE.start_main_~i~0#1| (_ bv3 32))) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv1 32)) (= |ULTIMATE.start_main_~z~0#1| .cse8)) (and (= |ULTIMATE.start_main_~z~0#1| .cse9) (= |ULTIMATE.start_main_~i~0#1| (_ bv13 32))) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv12 32)) (= (bvor (bvor (bvor .cse1 (let ((.cse11 (bvadd |ULTIMATE.start_main_~i~0#1| (_ bv4294967293 32)))) (let ((.cse10 (bvshl (_ bv1 32) .cse11))) (bvor (bvshl (bvand .cse6 .cse10) .cse11) (bvshl (bvand .cse7 .cse10) .cse12))))) .cse13) .cse4) |ULTIMATE.start_main_~z~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv15 32)) (= |ULTIMATE.start_main_~z~0#1| (bvor .cse2 .cse4))) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv7 32)) (= |ULTIMATE.start_main_~z~0#1| .cse14)) (and (= |ULTIMATE.start_main_~z~0#1| .cse3) (= (_ bv4 32) |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv11 32)) (= (bvor (bvor .cse1 .cse13) .cse4) |ULTIMATE.start_main_~z~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~z~0#1| (_ bv0 32))) (and (= |ULTIMATE.start_main_~z~0#1| (bvor .cse14 .cse4)) (= |ULTIMATE.start_main_~i~0#1| (_ bv8 32))))))))))))) [2021-11-20 07:10:59,782 INFO L858 garLoopResultBuilder]: For program point L49-3(lines 49 52) no Hoare annotation was computed. [2021-11-20 07:10:59,784 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1] [2021-11-20 07:10:59,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:10:59,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:10:59 BoogieIcfgContainer [2021-11-20 07:10:59,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:10:59,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:10:59,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:10:59,840 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:10:59,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:00" (3/4) ... [2021-11-20 07:10:59,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:10:59,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 07:10:59,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 07:10:59,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:10:59,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:10:59,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:10:59,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:10:59,905 INFO L158 Benchmark]: Toolchain (without parser) took 59844.84ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 40.3MB in the beginning and 41.8MB in the end (delta: -1.6MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2021-11-20 07:10:59,905 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 41.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:10:59,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.22ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 44.0MB in the end (delta: -3.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 07:10:59,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.54ms. Allocated memory is still 60.8MB. Free memory was 43.8MB in the beginning and 42.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:10:59,906 INFO L158 Benchmark]: Boogie Preprocessor took 22.00ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 41.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:10:59,906 INFO L158 Benchmark]: RCFGBuilder took 391.59ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 31.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:10:59,907 INFO L158 Benchmark]: TraceAbstraction took 59005.23ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 31.3MB in the beginning and 48.1MB in the end (delta: -16.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2021-11-20 07:10:59,907 INFO L158 Benchmark]: Witness Printer took 63.84ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 41.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 07:10:59,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 41.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.22ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 44.0MB in the end (delta: -3.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.54ms. Allocated memory is still 60.8MB. Free memory was 43.8MB in the beginning and 42.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.00ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 41.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.59ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 31.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59005.23ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 31.3MB in the beginning and 48.1MB in the end (delta: -16.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * Witness Printer took 63.84ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 41.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.9s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 147 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 556 IncrementalHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 30 mSDtfsCounter, 556 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 51.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 33 NumberOfFragments, 2127 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3445 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 51.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 126 ConstructedInterpolants, 1 QuantifiedInterpolants, 10218 SizeOfPredicates, 13 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 120/530 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((i == 6bv32 && 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)))) || (i == 9bv32 && 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))))) || (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), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))))) || (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), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) && i == 5bv32)) || (i == 10bv32 && ~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), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) == z)) || (~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))) == z && i == 2bv32)) || ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16384bv32), 14bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16384bv32), 15bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32768bv32), 15bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32768bv32), 16bv32))) == z) || (z == ~bvor32(~bvor32(~bvor32(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), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) && i == 3bv32)) || (i == 1bv32 && z == ~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))))) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))) && i == 13bv32)) || (i == 12bv32 && ~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), ~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(4294967295bv32, i)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) == z)) || (i == 15bv32 && z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2048bv32), 11bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2048bv32), 12bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4096bv32), 12bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4096bv32), 13bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8192bv32), 13bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8192bv32), 14bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))))) || (i == 7bv32 && z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))))) || (z == ~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))) && 4bv32 == i)) || (i == 11bv32 && ~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), ~bvshl32(1bv32, ~bvadd64(i, 4294967294bv32))), ~bvadd64(i, 4294967294bv32)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(i, 4294967294bv32))), ~bvadd64(4294967295bv32, i)))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) == z)) || (i == 0bv32 && z == 0bv32)) || (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), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) && i == 8bv32) RESULT: Ultimate proved your program to be correct! [2021-11-20 07:11:00,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06002609-8c93-43fb-89ba-e07543fe1a5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE