./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be --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 86c126dfc60e20cd2228ce5db3ee3d104383589669ac8dfd4016406baecc5b3e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be --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 86c126dfc60e20cd2228ce5db3ee3d104383589669ac8dfd4016406baecc5b3e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:23:50,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:23:50,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:23:50,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:23:50,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:23:50,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:23:51,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:23:51,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:23:51,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:23:51,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:23:51,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:23:51,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:23:51,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:23:51,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:23:51,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:23:51,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:23:51,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:23:51,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:23:51,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:23:51,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:23:51,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:23:51,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:23:51,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:23:51,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:23:51,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:23:51,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:23:51,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:23:51,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:23:51,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:23:51,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:23:51,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:23:51,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:23:51,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:23:51,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:23:51,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:23:51,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:23:51,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:23:51,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:23:51,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:23:51,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:23:51,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:23:51,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:23:51,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:23:51,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:23:51,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:23:51,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:23:51,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:23:51,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:23:51,142 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:23:51,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:23:51,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:23:51,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:23:51,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:23:51,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:23:51,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:23:51,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:23:51,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:23:51,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:23:51,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:23:51,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:23:51,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:23:51,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:23:51,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:23:51,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:23:51,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:23:51,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:23:51,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:23:51,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:23:51,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:23:51,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:23:51,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:23:51,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:23:51,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:23:51,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:23:51,151 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86c126dfc60e20cd2228ce5db3ee3d104383589669ac8dfd4016406baecc5b3e [2021-10-21 20:23:51,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:23:51,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:23:51,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:23:51,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:23:51,575 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:23:51,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/interleave_bits.i [2021-10-21 20:23:51,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/140e9cc9a/3417efdbba774706b91fcb877f99aa94/FLAG10f239d15 [2021-10-21 20:23:52,316 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:23:52,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i [2021-10-21 20:23:52,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/140e9cc9a/3417efdbba774706b91fcb877f99aa94/FLAG10f239d15 [2021-10-21 20:23:52,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/140e9cc9a/3417efdbba774706b91fcb877f99aa94 [2021-10-21 20:23:52,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:23:52,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:23:52,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:52,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:23:52,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:23:52,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:52" (1/1) ... [2021-10-21 20:23:52,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5118b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:52, skipping insertion in model container [2021-10-21 20:23:52,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:52" (1/1) ... [2021-10-21 20:23:52,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:23:52,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:23:52,953 WARN L228 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2021-10-21 20:23:52,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:53,013 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:23:53,031 WARN L228 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2021-10-21 20:23:53,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:53,081 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:23:53,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53 WrapperNode [2021-10-21 20:23:53,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:53,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:53,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:23:53,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:23:53,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:53,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:23:53,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:23:53,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:23:53,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:23:53,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:23:53,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:23:53,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:23:53,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (1/1) ... [2021-10-21 20:23:53,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:23:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:53,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:23:53,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:23:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:23:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:23:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:23:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:23:53,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:23:53,560 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:23:53,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:53 BoogieIcfgContainer [2021-10-21 20:23:53,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:23:53,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:23:53,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:23:53,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:23:53,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:23:52" (1/3) ... [2021-10-21 20:23:53,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7677e069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:53, skipping insertion in model container [2021-10-21 20:23:53,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:53" (2/3) ... [2021-10-21 20:23:53,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7677e069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:53, skipping insertion in model container [2021-10-21 20:23:53,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:53" (3/3) ... [2021-10-21 20:23:53,572 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2021-10-21 20:23:53,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:23:53,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:23:53,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:23:53,637 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 [2021-10-21 20:23:53,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:23:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) [2021-10-21 20:23:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:23:53,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:53,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:23:53,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:53,668 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-21 20:23:53,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:53,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754501202] [2021-10-21 20:23:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:53,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:53,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:53,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754501202] [2021-10-21 20:23:53,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754501202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:53,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:53,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:23:53,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826211317] [2021-10-21 20:23:53,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:23:53,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:23:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:23:53,990 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) 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) [2021-10-21 20:23:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:54,040 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-10-21 20:23:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:23:54,043 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 [2021-10-21 20:23:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:54,052 INFO L225 Difference]: With dead ends: 18 [2021-10-21 20:23:54,052 INFO L226 Difference]: Without dead ends: 8 [2021-10-21 20:23:54,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:23:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-21 20:23:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 20:23:54,103 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) [2021-10-21 20:23:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-21 20:23:54,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-21 20:23:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:54,106 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-21 20:23:54,106 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) [2021-10-21 20:23:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-21 20:23:54,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:23:54,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:54,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:54,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:23:54,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-10-21 20:23:54,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:54,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983084094] [2021-10-21 20:23:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:54,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:54,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:54,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983084094] [2021-10-21 20:23:54,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983084094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:54,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391543305] [2021-10-21 20:23:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:54,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:54,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:54,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:54,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:23:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:54,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:23:54,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:54,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391543305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:54,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:54,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 20:23:54,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357617295] [2021-10-21 20:23:54,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:23:54,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:23:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:23:54,454 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-21 20:23:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:54,468 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-21 20:23:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:23:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) Word has length 7 [2021-10-21 20:23:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:54,470 INFO L225 Difference]: With dead ends: 13 [2021-10-21 20:23:54,470 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:23:54,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:23:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:23:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:23:54,474 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) [2021-10-21 20:23:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:23:54,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-21 20:23:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:54,476 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:23:54,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-21 20:23:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:23:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:23:54,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:54,477 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:54,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 20:23:54,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:54,699 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2021-10-21 20:23:54,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:54,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711610811] [2021-10-21 20:23:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:54,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:54,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:54,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711610811] [2021-10-21 20:23:54,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711610811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:54,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395177017] [2021-10-21 20:23:54,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:23:54,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:54,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:54,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:54,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:23:54,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:23:54,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:54,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:23:54,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:54,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395177017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:54,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:54,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 20:23:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380377588] [2021-10-21 20:23:54,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:23:54,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:23:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:23:54,984 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-21 20:23:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:55,026 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-21 20:23:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:23:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 [2021-10-21 20:23:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:55,028 INFO L225 Difference]: With dead ends: 14 [2021-10-21 20:23:55,029 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 20:23:55,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:23:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 20:23:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 20:23:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-21 20:23:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-21 20:23:55,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-21 20:23:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:55,036 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-21 20:23:55,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-21 20:23:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-21 20:23:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:23:55,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:55,038 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:55,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:55,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:55,272 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:55,273 INFO L82 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 3 times [2021-10-21 20:23:55,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:55,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493885621] [2021-10-21 20:23:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:55,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:55,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:55,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493885621] [2021-10-21 20:23:55,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493885621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:55,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758733502] [2021-10-21 20:23:55,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:23:55,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:55,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:55,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:23:55,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:23:55,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:23:55,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:55,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758733502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:55,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:55,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-21 20:23:55,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406777414] [2021-10-21 20:23:55,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:23:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:23:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:23:55,576 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-21 20:23:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:55,616 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-21 20:23:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:23:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) Word has length 9 [2021-10-21 20:23:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:55,618 INFO L225 Difference]: With dead ends: 15 [2021-10-21 20:23:55,618 INFO L226 Difference]: Without dead ends: 11 [2021-10-21 20:23:55,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:23:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-21 20:23:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-21 20:23:55,626 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) [2021-10-21 20:23:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-21 20:23:55,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-21 20:23:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:55,627 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-21 20:23:55,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-21 20:23:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-21 20:23:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:23:55,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:55,628 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:55,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:55,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:55,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 4 times [2021-10-21 20:23:55,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:55,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189878037] [2021-10-21 20:23:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:55,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:56,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:56,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189878037] [2021-10-21 20:23:56,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189878037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:56,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239552340] [2021-10-21 20:23:56,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:23:56,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:56,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:56,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:23:56,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:23:56,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:56,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:23:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:56,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239552340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:56,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:56,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 20:23:56,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260192196] [2021-10-21 20:23:56,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:23:56,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:23:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:23:56,288 INFO L87 Difference]: Start difference. First operand 11 states and 11 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) [2021-10-21 20:23:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:56,321 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-21 20:23:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:23:56,322 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 10 [2021-10-21 20:23:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:56,323 INFO L225 Difference]: With dead ends: 16 [2021-10-21 20:23:56,323 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 20:23:56,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.8ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:23:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 20:23:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 20:23:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2021-10-21 20:23:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 20:23:56,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-10-21 20:23:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:56,328 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 20:23:56,328 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) [2021-10-21 20:23:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 20:23:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:23:56,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:56,329 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:56,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:56,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:56,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 5 times [2021-10-21 20:23:56,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:56,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448020625] [2021-10-21 20:23:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:56,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:56,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:56,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448020625] [2021-10-21 20:23:56,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448020625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:56,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761369581] [2021-10-21 20:23:56,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:23:56,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:56,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:56,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:23:56,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 20:23:56,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:56,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:23:56,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:56,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761369581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:56,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:56,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 20:23:56,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051111666] [2021-10-21 20:23:56,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:23:56,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:23:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:23:56,951 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-21 20:23:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:57,006 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-21 20:23:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:23:57,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) Word has length 11 [2021-10-21 20:23:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:57,009 INFO L225 Difference]: With dead ends: 17 [2021-10-21 20:23:57,011 INFO L226 Difference]: Without dead ends: 13 [2021-10-21 20:23:57,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:23:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-21 20:23:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-21 20:23:57,017 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) [2021-10-21 20:23:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-21 20:23:57,019 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-10-21 20:23:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:57,019 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-21 20:23:57,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-21 20:23:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-21 20:23:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:23:57,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:57,022 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:57,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-21 20:23:57,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:57,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:57,258 INFO L82 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 6 times [2021-10-21 20:23:57,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:57,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637135476] [2021-10-21 20:23:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:57,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:57,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:57,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637135476] [2021-10-21 20:23:57,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637135476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:57,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009928470] [2021-10-21 20:23:57,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:23:57,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:57,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:57,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:23:57,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-21 20:23:57,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:57,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:23:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009928470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:57,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:57,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-21 20:23:57,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061317207] [2021-10-21 20:23:57,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:23:57,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:23:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:23:57,672 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-21 20:23:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:57,719 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-21 20:23:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:23:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 [2021-10-21 20:23:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:57,720 INFO L225 Difference]: With dead ends: 18 [2021-10-21 20:23:57,720 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 20:23:57,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:23:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 20:23:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 20:23:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-21 20:23:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-21 20:23:57,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-10-21 20:23:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:57,725 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 20:23:57,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-21 20:23:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-21 20:23:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:23:57,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:57,726 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:57,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:57,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 20:23:57,951 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:57,951 INFO L82 PathProgramCache]: Analyzing trace with hash 86212784, now seen corresponding path program 7 times [2021-10-21 20:23:57,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:57,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56941272] [2021-10-21 20:23:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:57,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:58,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:58,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56941272] [2021-10-21 20:23:58,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56941272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:58,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723768658] [2021-10-21 20:23:58,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:23:58,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:58,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:58,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:58,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:23:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:58,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:23:58,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:58,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723768658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:58,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:58,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-21 20:23:58,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308038149] [2021-10-21 20:23:58,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:23:58,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:23:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:23:58,328 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-21 20:23:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:58,387 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-21 20:23:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:23:58,388 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 13 [2021-10-21 20:23:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:58,389 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:23:58,389 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 20:23:58,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:23:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 20:23:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-21 20:23:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-10-21 20:23:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-21 20:23:58,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-10-21 20:23:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:58,397 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-21 20:23:58,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-21 20:23:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-21 20:23:58,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:23:58,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:58,400 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:58,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 20:23:58,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 20:23:58,615 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1620705621, now seen corresponding path program 8 times [2021-10-21 20:23:58,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:58,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841617217] [2021-10-21 20:23:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:58,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:58,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:58,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841617217] [2021-10-21 20:23:58,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841617217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:58,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921843469] [2021-10-21 20:23:58,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:23:58,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:58,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:58,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:58,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:23:58,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:23:58,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:58,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:23:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921843469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:58,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:58,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-21 20:23:58,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368172111] [2021-10-21 20:23:58,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:23:58,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:23:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:23:58,955 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-10-21 20:23:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:59,009 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-21 20:23:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:23:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 14 [2021-10-21 20:23:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:59,010 INFO L225 Difference]: With dead ends: 20 [2021-10-21 20:23:59,010 INFO L226 Difference]: Without dead ends: 16 [2021-10-21 20:23:59,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:23:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-21 20:23:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-21 20:23:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-21 20:23:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-21 20:23:59,014 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-10-21 20:23:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:59,014 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-21 20:23:59,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-10-21 20:23:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-21 20:23:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:23:59,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:59,015 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:59,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:59,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:59,242 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:59,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1299398672, now seen corresponding path program 9 times [2021-10-21 20:23:59,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:59,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239578373] [2021-10-21 20:23:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:59,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:59,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:59,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239578373] [2021-10-21 20:23:59,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239578373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:59,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756145596] [2021-10-21 20:23:59,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:23:59,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:59,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:59,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:59,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:23:59,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-21 20:23:59,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:59,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 20:23:59,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:59,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756145596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:59,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:59,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-21 20:23:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943191521] [2021-10-21 20:23:59,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:23:59,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:23:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:23:59,683 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2021-10-21 20:23:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:59,747 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-21 20:23:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:23:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) Word has length 15 [2021-10-21 20:23:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:59,749 INFO L225 Difference]: With dead ends: 21 [2021-10-21 20:23:59,749 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 20:23:59,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:23:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 20:23:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 20:23:59,754 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) [2021-10-21 20:23:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-21 20:23:59,755 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-10-21 20:23:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:59,755 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-21 20:23:59,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2021-10-21 20:23:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-21 20:23:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:23:59,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:59,757 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:59,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:59,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:23:59,961 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 10 times [2021-10-21 20:23:59,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:59,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672860048] [2021-10-21 20:23:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:59,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:00,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:00,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672860048] [2021-10-21 20:24:00,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672860048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:00,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194346461] [2021-10-21 20:24:00,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:24:00,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:00,199 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:00,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:24:00,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:24:00,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:00,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:24:00,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:00,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194346461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:00,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:00,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-21 20:24:00,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484784354] [2021-10-21 20:24:00,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:24:00,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:24:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:24:00,483 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2021-10-21 20:24:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:00,568 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-21 20:24:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:24:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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 16 [2021-10-21 20:24:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:00,572 INFO L225 Difference]: With dead ends: 22 [2021-10-21 20:24:00,572 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 20:24:00,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:24:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 20:24:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-21 20:24:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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) [2021-10-21 20:24:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-21 20:24:00,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-10-21 20:24:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:00,582 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-21 20:24:00,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2021-10-21 20:24:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-21 20:24:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:24:00,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:00,583 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:00,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:00,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:00,794 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:00,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1060067472, now seen corresponding path program 11 times [2021-10-21 20:24:00,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:00,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892698809] [2021-10-21 20:24:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:00,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:01,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:01,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892698809] [2021-10-21 20:24:01,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892698809] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:01,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256929062] [2021-10-21 20:24:01,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:24:01,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:01,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:01,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:01,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 20:24:01,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-21 20:24:01,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:01,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 20:24:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:01,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256929062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:01,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:01,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-21 20:24:01,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860658861] [2021-10-21 20:24:01,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:24:01,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:24:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:24:01,515 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-10-21 20:24:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:01,622 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-10-21 20:24:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:24:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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 17 [2021-10-21 20:24:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:01,623 INFO L225 Difference]: With dead ends: 23 [2021-10-21 20:24:01,623 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:24:01,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:24:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:24:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 20:24:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-10-21 20:24:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-21 20:24:01,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2021-10-21 20:24:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:01,628 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-21 20:24:01,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-10-21 20:24:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-21 20:24:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:24:01,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:01,629 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:01,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:01,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:01,842 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1499312107, now seen corresponding path program 12 times [2021-10-21 20:24:01,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:01,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728711550] [2021-10-21 20:24:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:01,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:02,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728711550] [2021-10-21 20:24:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728711550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468341312] [2021-10-21 20:24:02,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:24:02,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:02,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:02,098 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 20:24:02,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 20:24:02,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:02,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:24:02,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:02,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468341312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:02,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:02,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-21 20:24:02,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589922888] [2021-10-21 20:24:02,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:24:02,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:24:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:24:02,486 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2021-10-21 20:24:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:02,593 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-21 20:24:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:24:02,594 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 18 [2021-10-21 20:24:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:02,595 INFO L225 Difference]: With dead ends: 24 [2021-10-21 20:24:02,595 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 20:24:02,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:24:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 20:24:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-21 20:24:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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) [2021-10-21 20:24:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-21 20:24:02,600 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-10-21 20:24:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:02,600 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-21 20:24:02,601 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) [2021-10-21 20:24:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-21 20:24:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:24:02,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:02,602 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:02,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:02,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 20:24:02,807 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash -764299568, now seen corresponding path program 13 times [2021-10-21 20:24:02,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:02,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626777360] [2021-10-21 20:24:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:02,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:03,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:03,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626777360] [2021-10-21 20:24:03,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626777360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:03,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446378867] [2021-10-21 20:24:03,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:24:03,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:03,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:03,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 20:24:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 20:24:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:03,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446378867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:03,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:03,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-21 20:24:03,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556396999] [2021-10-21 20:24:03,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 20:24:03,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 20:24:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:24:03,376 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 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) [2021-10-21 20:24:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:03,535 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-21 20:24:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:24:03,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 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) Word has length 19 [2021-10-21 20:24:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:03,537 INFO L225 Difference]: With dead ends: 25 [2021-10-21 20:24:03,537 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 20:24:03,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:24:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 20:24:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-21 20:24:03,542 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) [2021-10-21 20:24:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-21 20:24:03,543 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-10-21 20:24:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:03,543 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-21 20:24:03,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 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) [2021-10-21 20:24:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-21 20:24:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:24:03,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:03,545 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:03,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:03,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 20:24:03,767 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2078182539, now seen corresponding path program 14 times [2021-10-21 20:24:03,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:03,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770091663] [2021-10-21 20:24:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:03,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:04,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:04,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770091663] [2021-10-21 20:24:04,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770091663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:04,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497500451] [2021-10-21 20:24:04,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:24:04,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:04,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:04,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 20:24:04,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:24:04,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:04,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 20:24:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497500451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:04,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:04,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-21 20:24:04,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452206767] [2021-10-21 20:24:04,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 20:24:04,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 20:24:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:24:04,379 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-10-21 20:24:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:04,518 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-21 20:24:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:24:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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 [2021-10-21 20:24:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:04,520 INFO L225 Difference]: With dead ends: 26 [2021-10-21 20:24:04,520 INFO L226 Difference]: Without dead ends: 22 [2021-10-21 20:24:04,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:24:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-21 20:24:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-21 20:24:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-10-21 20:24:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-21 20:24:04,524 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-10-21 20:24:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:04,524 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-21 20:24:04,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-10-21 20:24:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-21 20:24:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:24:04,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:04,525 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:04,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-21 20:24:04,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 20:24:04,743 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:04,743 INFO L82 PathProgramCache]: Analyzing trace with hash 814640, now seen corresponding path program 15 times [2021-10-21 20:24:04,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999843547] [2021-10-21 20:24:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:04,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:05,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:05,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999843547] [2021-10-21 20:24:05,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999843547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:05,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928828234] [2021-10-21 20:24:05,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:24:05,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:05,006 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:05,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 20:24:05,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-21 20:24:05,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:05,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 20:24:05,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:05,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928828234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:05,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:05,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-21 20:24:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536855910] [2021-10-21 20:24:05,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 20:24:05,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 20:24:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:24:05,445 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2021-10-21 20:24:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:05,592 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-21 20:24:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:24:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) Word has length 21 [2021-10-21 20:24:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:05,593 INFO L225 Difference]: With dead ends: 27 [2021-10-21 20:24:05,593 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:24:05,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 188.9ms TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:24:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:24:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 20:24:05,596 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) [2021-10-21 20:24:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-21 20:24:05,596 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2021-10-21 20:24:05,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:05,597 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-21 20:24:05,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2021-10-21 20:24:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-21 20:24:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:24:05,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:05,598 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:05,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:05,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:05,802 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:05,803 INFO L82 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 16 times [2021-10-21 20:24:05,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:05,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697288574] [2021-10-21 20:24:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:05,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:24:05,822 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:24:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:24:05,855 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:24:05,856 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:24:05,857 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:24:05,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 20:24:05,865 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:24:05,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:24:05 BoogieIcfgContainer [2021-10-21 20:24:05,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:24:05,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:24:05,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:24:05,908 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:24:05,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:53" (3/4) ... [2021-10-21 20:24:05,912 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:24:05,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:24:05,914 INFO L168 Benchmark]: Toolchain (without parser) took 13262.85 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 45.4 MB in the beginning and 70.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,915 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:24:05,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.50 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 45.2 MB in the beginning and 81.0 MB in the end (delta: -35.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,917 INFO L168 Benchmark]: Boogie Preprocessor took 51.56 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,918 INFO L168 Benchmark]: RCFGBuilder took 372.67 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 69.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,918 INFO L168 Benchmark]: TraceAbstraction took 12342.19 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.9 MB in the beginning and 70.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:05,919 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 130.0 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:24:05,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.50 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 45.2 MB in the beginning and 81.0 MB in the end (delta: -35.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.56 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 372.67 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 69.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12342.19 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.9 MB in the beginning and 70.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.47 ms. Allocated memory is still 130.0 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 56, overapproximation of bitwiseAnd at line 47. Possible FailurePath: [L34] unsigned short x = __VERIFIER_nondet_ushort(); [L35] unsigned short y = __VERIFIER_nondet_ushort(); [L36] unsigned int xx; [L37] unsigned int yy; [L38] unsigned int zz; [L39] unsigned int z = 0; [L40] unsigned int i = 0; [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND TRUE i < sizeof(x) * 8 [L42] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L43] i += 1U [L41] COND FALSE !(i < sizeof(x) * 8) [L45] xx = x [L46] yy = y [L47] xx = (xx | (xx << 8u)) & 16711935U [L48] xx = (xx | (xx << 4u)) & 252645135U [L49] xx = (xx | (xx << 2u)) & 858993459U [L50] xx = (xx | (xx << 1u)) & 1431655765U [L51] yy = (yy | (yy << 8u)) & 16711935U [L52] yy = (yy | (yy << 4u)) & 252645135U [L53] yy = (yy | (yy << 2u)) & 858993459U [L54] yy = (yy | (yy << 1u)) & 1431655765U [L56] zz = xx | (yy << 1U) [L16] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12235.4ms, OverallIterations: 17, TraceHistogramMax: 16, EmptinessCheckTime: 23.5ms, AutomataDifference: 1333.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 0 SDslu, 299 SDs, 0 SdLazy, 1644 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 802.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 198 SyntacticMatches, 14 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1601.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=16, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.8ms AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 160.9ms SsaConstructionTime, 1190.5ms SatisfiabilityAnalysisTime, 4529.2ms InterpolantComputationTime, 448 NumberOfCodeBlocks, 448 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 15 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1360 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 [2021-10-21 20:24:05,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:24:08,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:24:08,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:24:08,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-21 20:24:09,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:24:09,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:24:09,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:24:09,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:24:09,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:24:09,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:24:09,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:24:09,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:24:09,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:24:09,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:24:09,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:24:09,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:24:09,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:24:09,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:24:09,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:24:09,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:24:09,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:24:09,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:24:09,123 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:24:09,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:24:09,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:24:09,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:24:09,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:24:09,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:24:09,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:24:09,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:24:09,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:24:09,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:24:09,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:24:09,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:24:09,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:24:09,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:24:09,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:24:09,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:24:09,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:24:09,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:24:09,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:24:09,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:24:09,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:24:09,130 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:24:09,130 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:24:09,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:24:09,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:24:09,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:24:09,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:24:09,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:24:09,132 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86c126dfc60e20cd2228ce5db3ee3d104383589669ac8dfd4016406baecc5b3e [2021-10-21 20:24:09,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:24:09,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:24:09,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:24:09,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:24:09,615 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:24:09,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/interleave_bits.i [2021-10-21 20:24:09,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/58246dad4/03320297814348d0a3b62a8fdffada54/FLAG4d064ab85 [2021-10-21 20:24:10,336 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:24:10,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i [2021-10-21 20:24:10,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/58246dad4/03320297814348d0a3b62a8fdffada54/FLAG4d064ab85 [2021-10-21 20:24:10,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/data/58246dad4/03320297814348d0a3b62a8fdffada54 [2021-10-21 20:24:10,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:24:10,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:24:10,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:24:10,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:24:10,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:24:10,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:24:10" (1/1) ... [2021-10-21 20:24:10,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ade29b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:10, skipping insertion in model container [2021-10-21 20:24:10,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:24:10" (1/1) ... [2021-10-21 20:24:10,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:24:10,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:24:10,929 WARN L228 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2021-10-21 20:24:10,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:24:10,995 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:24:11,020 WARN L228 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_b1e126f9-7b88-4b40-93bb-9b87af3e926d/sv-benchmarks/c/bitvector/interleave_bits.i[870,883] [2021-10-21 20:24:11,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:24:11,057 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:24:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11 WrapperNode [2021-10-21 20:24:11,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:24:11,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:24:11,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:24:11,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:24:11,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:24:11,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:24:11,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:24:11,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:24:11,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:24:11,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:24:11,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:24:11,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:24:11,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (1/1) ... [2021-10-21 20:24:11,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:24:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:11,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:24:11,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:24:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:24:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:24:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:24:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:24:11,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:24:11,678 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:24:11,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:11 BoogieIcfgContainer [2021-10-21 20:24:11,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:24:11,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:24:11,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:24:11,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:24:11,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:24:10" (1/3) ... [2021-10-21 20:24:11,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d9d798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:24:11, skipping insertion in model container [2021-10-21 20:24:11,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:11" (2/3) ... [2021-10-21 20:24:11,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d9d798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:24:11, skipping insertion in model container [2021-10-21 20:24:11,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:11" (3/3) ... [2021-10-21 20:24:11,692 INFO L111 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2021-10-21 20:24:11,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:24:11,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:24:11,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:24:11,787 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 [2021-10-21 20:24:11,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:24:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) [2021-10-21 20:24:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:24:11,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:11,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:24:11,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-21 20:24:11,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:24:11,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488600057] [2021-10-21 20:24:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:11,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:24:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:24:11,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:24:11,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:24:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:11,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:24:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:12,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:12,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:24:12,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488600057] [2021-10-21 20:24:12,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488600057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:12,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:12,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:24:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162758568] [2021-10-21 20:24:12,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:24:12,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:24:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:24:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:24:12,196 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) 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) [2021-10-21 20:24:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:12,252 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-21 20:24:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:24:12,256 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 [2021-10-21 20:24:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:12,268 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:24:12,268 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:24:12,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:24:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:24:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:24:12,313 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) [2021-10-21 20:24:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:24:12,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-21 20:24:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:12,317 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:24:12,317 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) [2021-10-21 20:24:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:24:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:24:12,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:12,319 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:12,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:12,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:24:12,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:12,539 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-21 20:24:12,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:24:12,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092617709] [2021-10-21 20:24:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:12,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:24:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:24:12,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:24:12,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:24:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:12,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:24:12,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:12,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:12,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:24:12,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092617709] [2021-10-21 20:24:12,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092617709] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:24:12,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:12,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 20:24:12,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854185792] [2021-10-21 20:24:12,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:24:12,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:24:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:24:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:24:12,831 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) [2021-10-21 20:24:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:12,968 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-21 20:24:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:24:12,969 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 [2021-10-21 20:24:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:12,970 INFO L225 Difference]: With dead ends: 17 [2021-10-21 20:24:12,970 INFO L226 Difference]: Without dead ends: 13 [2021-10-21 20:24:12,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:24:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-21 20:24:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-21 20:24:12,976 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) [2021-10-21 20:24:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-21 20:24:12,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-10-21 20:24:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:12,978 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-21 20:24:12,978 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) [2021-10-21 20:24:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-21 20:24:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:24:12,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:12,980 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:13,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:13,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:24:13,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:13,194 INFO L82 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-10-21 20:24:13,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:24:13,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544917622] [2021-10-21 20:24:13,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:24:13,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:24:13,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:24:13,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:24:13,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:24:13,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:24:13,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:13,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:24:13,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:13,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:24:13,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544917622] [2021-10-21 20:24:13,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544917622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:24:13,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:13,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-21 20:24:13,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494336777] [2021-10-21 20:24:13,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:24:13,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:24:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:24:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:24:13,849 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) [2021-10-21 20:24:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:14,318 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-21 20:24:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:24:14,321 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 [2021-10-21 20:24:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:14,322 INFO L225 Difference]: With dead ends: 25 [2021-10-21 20:24:14,322 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 20:24:14,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 555.6ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:24:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 20:24:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-21 20:24:14,329 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) [2021-10-21 20:24:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-21 20:24:14,330 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-10-21 20:24:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:14,336 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-21 20:24:14,336 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) [2021-10-21 20:24:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-21 20:24:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:24:14,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:14,338 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:14,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-21 20:24:14,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:24:14,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:14,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2078182539, now seen corresponding path program 3 times [2021-10-21 20:24:14,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:24:14,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554017818] [2021-10-21 20:24:14,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:24:14,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:24:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:24:14,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:24:14,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:24:14,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-21 20:24:14,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:14,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:24:14,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:15,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:16,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:24:16,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554017818] [2021-10-21 20:24:16,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554017818] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:24:16,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:24:16,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-10-21 20:24:16,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816097386] [2021-10-21 20:24:16,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-21 20:24:16,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:24:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-21 20:24:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:24:16,064 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) [2021-10-21 20:24:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:18,487 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2021-10-21 20:24:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-21 20:24:18,489 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 [2021-10-21 20:24:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:18,493 INFO L225 Difference]: With dead ends: 41 [2021-10-21 20:24:18,493 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:24:18,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3057.1ms TimeCoverageRelationStatistics Valid=622, Invalid=1540, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 20:24:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:24:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 20:24:18,514 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) [2021-10-21 20:24:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-21 20:24:18,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 20 [2021-10-21 20:24:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:18,518 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-21 20:24:18,521 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) [2021-10-21 20:24:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-21 20:24:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:24:18,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:18,525 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:18,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:18,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:24:18,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:24:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times [2021-10-21 20:24:18,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:24:18,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347431766] [2021-10-21 20:24:18,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:24:18,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:24:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:24:18,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:24:18,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:24:18,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:24:18,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:18,920 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-21 20:24:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:21,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:25:21,375 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 16)) (ULTIMATE.start_main_~y~0 (_ BitVec 16))) (let ((.cse0 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse1 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (= (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 (_ bv15 32)))) (bvor (let ((.cse29 (bvadd (_ bv14 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse27 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv13 32)))) (bvor (let ((.cse25 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv12 32)))) (bvor (let ((.cse23 (bvadd (_ bv11 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse21 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv10 32)))) (bvor (let ((.cse19 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv9 32)))) (bvor (let ((.cse17 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse15 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv7 32)))) (bvor (let ((.cse13 (bvadd (_ bv6 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse11 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv5 32)))) (bvor (let ((.cse9 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse7 (bvadd (_ bv3 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse5 (bvadd (_ bv2 32) c_ULTIMATE.start_main_~i~0))) (bvor (let ((.cse3 (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)))) (bvor (bvor c_ULTIMATE.start_main_~z~0 (let ((.cse2 (bvshl (_ bv1 32) c_ULTIMATE.start_main_~i~0))) (bvor (bvshl (bvand .cse0 .cse2) c_ULTIMATE.start_main_~i~0) (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))))))))) is different from false [2021-10-21 20:25:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2021-10-21 20:25:21,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:25:21,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347431766] [2021-10-21 20:25:21,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347431766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:25:21,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:21,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2021-10-21 20:25:21,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066325756] [2021-10-21 20:25:21,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-21 20:25:21,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:25:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-21 20:25:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=951, Unknown=1, NotChecked=68, Total=1332 [2021-10-21 20:25:21,474 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) [2021-10-21 20:25:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:24,123 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-10-21 20:25:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:25:24,124 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 [2021-10-21 20:25:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:24,125 INFO L225 Difference]: With dead ends: 37 [2021-10-21 20:25:24,125 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:25:24,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61113.8ms TimeCoverageRelationStatistics Valid=332, Invalid=1003, Unknown=1, NotChecked=70, Total=1406 [2021-10-21 20:25:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:25:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:25:24,130 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) [2021-10-21 20:25:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:25:24,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-21 20:25:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:24,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:24,132 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) [2021-10-21 20:25:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:25:24,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:25:24,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:24,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:24,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:25:24,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:25:24,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:24,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:26,037 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:25:26,037 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-21 20:25:26,037 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:25:26,037 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:25:26,038 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:25:26,038 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 20:25:26,038 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-10-21 20:25:26,039 INFO L860 garLoopResultBuilder]: At program point L16-2(lines 1 59) the Hoare annotation is: true [2021-10-21 20:25:26,039 INFO L853 garLoopResultBuilder]: At program point L41-2(lines 41 44) the Hoare annotation is: (let ((.cse10 ((_ zero_extend 16) ULTIMATE.start_main_~x~0)) (.cse11 ((_ zero_extend 16) ULTIMATE.start_main_~y~0))) (let ((.cse14 (bvor (_ bv0 32) (bvor (bvshl (bvand .cse10 (_ bv1 32)) (_ bv0 32)) (bvshl (bvand .cse11 (_ bv1 32)) (_ bv1 32)))))) (let ((.cse9 (bvor .cse14 (bvor (bvshl (bvand .cse10 (_ bv2 32)) (_ bv1 32)) (bvshl (bvand .cse11 (_ bv2 32)) (_ bv2 32)))))) (let ((.cse6 (bvor .cse9 (bvor (bvshl (bvand .cse10 (_ bv4 32)) (_ bv2 32)) (bvshl (bvand .cse11 (_ bv4 32)) (_ bv3 32)))))) (let ((.cse4 (bvor .cse6 (bvor (bvshl (bvand .cse10 (_ bv8 32)) (_ bv3 32)) (bvshl (bvand .cse11 (_ bv8 32)) (_ bv4 32)))))) (let ((.cse13 (bvor .cse4 (bvor (bvshl (bvand .cse10 (_ bv16 32)) (_ bv4 32)) (bvshl (bvand .cse11 (_ bv16 32)) (_ bv5 32)))))) (let ((.cse1 (bvor .cse13 (bvor (bvshl (bvand .cse10 (_ bv32 32)) (_ bv5 32)) (bvshl (bvand .cse11 (_ bv32 32)) (_ bv6 32)))))) (let ((.cse0 (bvor .cse1 (bvor (bvshl (bvand .cse10 (_ bv64 32)) (_ bv6 32)) (bvshl (bvand .cse11 (_ bv64 32)) (_ bv7 32)))))) (let ((.cse8 (bvor .cse0 (bvor (bvshl (bvand .cse10 (_ bv128 32)) (_ bv7 32)) (bvshl (bvand .cse11 (_ bv128 32)) (_ bv8 32)))))) (let ((.cse7 (bvor (bvor .cse8 (bvor (bvshl (bvand .cse10 (_ bv256 32)) (_ bv8 32)) (bvshl (bvand .cse11 (_ bv256 32)) (_ bv9 32)))) (bvor (bvshl (bvand .cse10 (_ bv512 32)) (_ bv9 32)) (bvshl (bvand .cse11 (_ bv512 32)) (_ bv10 32)))))) (let ((.cse12 (bvor .cse7 (bvor (bvshl (bvand .cse10 (_ bv1024 32)) (_ bv10 32)) (bvshl (bvand .cse11 (_ bv1024 32)) (_ bv11 32)))))) (let ((.cse2 (bvor (bvor .cse12 (bvor (bvshl (bvand .cse10 (_ bv2048 32)) (_ bv11 32)) (bvshl (bvand .cse11 (_ bv2048 32)) (_ bv12 32)))) (bvor (bvshl (bvand .cse10 (_ bv4096 32)) (_ bv12 32)) (bvshl (bvand .cse11 (_ bv4096 32)) (_ bv13 32)))))) (let ((.cse5 (bvor (bvor .cse2 (bvor (bvshl (bvand .cse10 (_ bv8192 32)) (_ bv13 32)) (bvshl (bvand .cse11 (_ bv8192 32)) (_ bv14 32)))) (bvor (bvshl (bvand .cse10 (_ bv16384 32)) (_ bv14 32)) (bvshl (bvand .cse11 (_ bv16384 32)) (_ bv15 32))))) (.cse3 (let ((.cse16 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0))) (let ((.cse15 (bvshl (_ bv1 32) .cse16))) (bvor (bvshl (bvand .cse10 .cse15) .cse16) (bvshl (bvand .cse11 .cse15) ULTIMATE.start_main_~i~0)))))) (or (and (= ULTIMATE.start_main_~z~0 .cse0) (= ULTIMATE.start_main_~i~0 (_ bv7 32))) (and (= ULTIMATE.start_main_~z~0 .cse1) (= (_ bv6 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv14 32) ULTIMATE.start_main_~i~0) (= (bvor .cse2 .cse3) ULTIMATE.start_main_~z~0)) (and (= (_ bv4 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse4)) (and (= ULTIMATE.start_main_~z~0 .cse5) (= ULTIMATE.start_main_~i~0 (_ bv15 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv13 32)) (= .cse2 ULTIMATE.start_main_~z~0)) (and (= .cse6 ULTIMATE.start_main_~z~0) (= (_ bv3 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~z~0 .cse7) (= ULTIMATE.start_main_~i~0 (_ bv10 32))) (and (= (_ bv8 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse8)) (and (= ULTIMATE.start_main_~i~0 (_ bv9 32)) (= ULTIMATE.start_main_~z~0 (bvor .cse8 .cse3))) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~z~0 .cse9)) (= (bvor .cse5 (bvor (bvshl (bvand .cse10 (_ bv32768 32)) (_ bv15 32)) (bvshl (bvand .cse11 (_ bv32768 32)) (_ bv16 32)))) ULTIMATE.start_main_~z~0) (and (= ULTIMATE.start_main_~i~0 (_ bv12 32)) (= (bvor .cse12 .cse3) ULTIMATE.start_main_~z~0)) (and (= ULTIMATE.start_main_~z~0 .cse13) (= ULTIMATE.start_main_~i~0 (_ bv5 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv1 32)) (= .cse14 ULTIMATE.start_main_~z~0)) (and (= (_ bv11 32) ULTIMATE.start_main_~i~0) (= .cse12 ULTIMATE.start_main_~z~0)) (and (= ULTIMATE.start_main_~z~0 (_ bv0 32)) (= ULTIMATE.start_main_~i~0 (_ bv0 32))))))))))))))))) [2021-10-21 20:25:26,040 INFO L857 garLoopResultBuilder]: For program point L41-3(lines 41 44) no Hoare annotation was computed. [2021-10-21 20:25:26,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:25:26,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:25:26 BoogieIcfgContainer [2021-10-21 20:25:26,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:25:26,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:25:26,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:25:26,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:25:26,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:11" (3/4) ... [2021-10-21 20:25:26,107 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:25:26,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 20:25:26,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:25:26,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:25:26,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:25:26,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:25:26,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:25:26,175 INFO L168 Benchmark]: Toolchain (without parser) took 75539.71 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 47.5 MB in the beginning and 77.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,176 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:26,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.96 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 37.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 67.1 MB. Free memory was 37.1 MB in the beginning and 35.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,178 INFO L168 Benchmark]: Boogie Preprocessor took 59.45 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 34.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:26,178 INFO L168 Benchmark]: RCFGBuilder took 507.40 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 42.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,179 INFO L168 Benchmark]: TraceAbstraction took 74419.28 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 41.7 MB in the beginning and 83.4 MB in the end (delta: -41.7 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,179 INFO L168 Benchmark]: Witness Printer took 70.49 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 77.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:26,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.96 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 37.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 67.1 MB. Free memory was 37.1 MB in the beginning and 35.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.45 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 34.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 507.40 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 42.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74419.28 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 41.7 MB in the beginning and 83.4 MB in the end (delta: -41.7 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. * Witness Printer took 70.49 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 77.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74275.4ms, OverallIterations: 5, TraceHistogramMax: 16, EmptinessCheckTime: 15.2ms, AutomataDifference: 5828.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1689.2ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 60 SDslu, 125 SDs, 0 SdLazy, 558 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2577.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 64893.1ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 63.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 33 NumberOfFragments, 2051 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3445 FormulaSimplificationTreeSizeReduction, 288.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 1393.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 63.4ms SsaConstructionTime, 375.7ms SatisfiabilityAnalysisTime, 64794.8ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 126 ConstructedInterpolants, 1 QuantifiedInterpolants, 10142 SizeOfPredicates, 13 NumberOfNonLiveVariables, 259 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: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((((((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))) && i == 7bv32) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))) && 6bv32 == i)) || (14bv32 == i && ~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), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) == z)) || (4bv32 == i && 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))))) || (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), 16384bv32), 14bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16384bv32), 15bv32))) && i == 15bv32)) || (i == 13bv32 && ~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))) == 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), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))) == z && 3bv32 == i)) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))) && i == 10bv32)) || (8bv32 == i && z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))))) || (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), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))))) || (2bv32 == i && z == ~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))))) || ~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) || (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), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), ~bvadd64(4294967295bv32, i)), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), ~bvshl32(1bv32, ~bvadd64(4294967295bv32, i))), i))) == z)) || (z == ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))) && i == 5bv32)) || (i == 1bv32 && ~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))) == z)) || (11bv32 == i && ~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(~bvor32(0bv32, ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1bv32), 0bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1bv32), 1bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 2bv32), 1bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 2bv32), 2bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 4bv32), 2bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 4bv32), 3bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 8bv32), 3bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 8bv32), 4bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 16bv32), 4bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 16bv32), 5bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 32bv32), 5bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 32bv32), 6bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 64bv32), 6bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 64bv32), 7bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 128bv32), 7bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 128bv32), 8bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 256bv32), 8bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 256bv32), 9bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 512bv32), 9bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 512bv32), 10bv32))), ~bvor32(~bvshl32(~bvand32(~zero_extendFrom16To32(x), 1024bv32), 10bv32), ~bvshl32(~bvand32(~zero_extendFrom16To32(y), 1024bv32), 11bv32))) == z)) || (z == 0bv32 && i == 0bv32) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:25:26,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1e126f9-7b88-4b40-93bb-9b87af3e926d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...