./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --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_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/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_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/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_003351ff-d890-4ab9-8209-a53aa9812493/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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d ........................................................................................................................................................................................................................................................................................................ 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_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/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_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/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_003351ff-d890-4ab9-8209-a53aa9812493/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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:15:01,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:15:01,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:15:01,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:15:01,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:15:01,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:15:01,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:15:01,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:15:01,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:15:01,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:15:01,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:15:01,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:15:01,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:15:01,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:15:01,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:15:01,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:15:01,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:15:01,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:15:01,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:15:01,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:15:01,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:15:01,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:15:01,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:15:01,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:15:01,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:15:01,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:15:01,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:15:01,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:15:01,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:15:01,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:15:01,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:15:01,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:15:01,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:15:01,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:15:01,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:15:01,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:15:01,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:15:01,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:15:01,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:15:01,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:15:01,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:15:01,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:15:01,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:15:01,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:15:01,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:15:01,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:15:01,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:15:01,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:15:01,462 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:15:01,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:15:01,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:15:01,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:15:01,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:15:01,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:15:01,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:15:01,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:15:01,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:15:01,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:15:01,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:15:01,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:15:01,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:15:01,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:15:01,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:15:01,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:15:01,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:01,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:15:01,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:15:01,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:15:01,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:15:01,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:15:01,472 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:15:01,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:15:01,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:15:01,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:15:01,474 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_003351ff-d890-4ab9-8209-a53aa9812493/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-21 20:15:01,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:15:01,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:15:01,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:15:01,816 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:15:01,817 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:15:01,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-21 20:15:01,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/f8ef74595/b43f89fffcde4efd8f0260ba82d833dc/FLAGb5b7be3fa [2021-10-21 20:15:02,418 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:15:02,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-21 20:15:02,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/f8ef74595/b43f89fffcde4efd8f0260ba82d833dc/FLAGb5b7be3fa [2021-10-21 20:15:02,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/f8ef74595/b43f89fffcde4efd8f0260ba82d833dc [2021-10-21 20:15:02,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:15:02,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:15:02,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:02,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:15:02,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:15:02,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:02" (1/1) ... [2021-10-21 20:15:02,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7d9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:02, skipping insertion in model container [2021-10-21 20:15:02,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:02" (1/1) ... [2021-10-21 20:15:02,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:15:02,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:15:03,090 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_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-21 20:15:03,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:03,104 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:15:03,145 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_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-21 20:15:03,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:03,160 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:15:03,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03 WrapperNode [2021-10-21 20:15:03,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:03,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:03,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:15:03,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:15:03,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:03,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:15:03,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:15:03,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:15:03,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:15:03,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:15:03,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:15:03,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:15:03,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (1/1) ... [2021-10-21 20:15:03,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:03,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:15:03,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:15:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:15:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:15:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-21 20:15:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:15:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-21 20:15:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:15:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:15:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:15:03,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:03,861 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-21 20:15:03,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:03 BoogieIcfgContainer [2021-10-21 20:15:03,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:03,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:03,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:03,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:03,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:15:02" (1/3) ... [2021-10-21 20:15:03,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672c0bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:03, skipping insertion in model container [2021-10-21 20:15:03,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:03" (2/3) ... [2021-10-21 20:15:03,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672c0bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:03, skipping insertion in model container [2021-10-21 20:15:03,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:03" (3/3) ... [2021-10-21 20:15:03,887 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-21 20:15:03,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:03,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:15:03,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:03,957 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 20:15:03,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:15:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 20:15:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:15:03,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:03,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:03,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-21 20:15:03,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:03,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113591922] [2021-10-21 20:15:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:03,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:04,164 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 20:15:04,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:04,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113591922] [2021-10-21 20:15:04,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113591922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:04,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:04,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:15:04,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843738236] [2021-10-21 20:15:04,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:15:04,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:04,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:15:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:04,195 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 20:15:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:04,220 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-21 20:15:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:15:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2021-10-21 20:15:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:04,234 INFO L225 Difference]: With dead ends: 104 [2021-10-21 20:15:04,234 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 20:15:04,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 20:15:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 20:15:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 20:15:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-21 20:15:04,280 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-21 20:15:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:04,281 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-21 20:15:04,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 20:15:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-21 20:15:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:15:04,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:04,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:04,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:15:04,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-21 20:15:04,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:04,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326368823] [2021-10-21 20:15:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:04,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:15:04,366 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:15:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:15:04,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:15:04,430 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:15:04,433 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:04,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:15:04,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:04,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:04 BoogieIcfgContainer [2021-10-21 20:15:04,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:04,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:04,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:04,475 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:04,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:03" (3/4) ... [2021-10-21 20:15:04,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:15:04,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:04,482 INFO L168 Benchmark]: Toolchain (without parser) took 1693.72 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 85.5 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:04,483 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 115.3 MB. Free memory was 93.0 MB in the beginning and 92.9 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:04,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.57 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 88.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:04,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.09 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:04,485 INFO L168 Benchmark]: Boogie Preprocessor took 67.97 ms. Allocated memory is still 115.3 MB. Free memory was 86.5 MB in the beginning and 84.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:04,486 INFO L168 Benchmark]: RCFGBuilder took 569.32 ms. Allocated memory is still 115.3 MB. Free memory was 84.6 MB in the beginning and 68.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:04,487 INFO L168 Benchmark]: TraceAbstraction took 608.06 ms. Allocated memory is still 115.3 MB. Free memory was 68.3 MB in the beginning and 86.1 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:04,488 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 85.5 MB in the end (delta: 609.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:04,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 115.3 MB. Free memory was 93.0 MB in the beginning and 92.9 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.57 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 88.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.09 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.97 ms. Allocated memory is still 115.3 MB. Free memory was 86.5 MB in the beginning and 84.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 569.32 ms. Allocated memory is still 115.3 MB. Free memory was 84.6 MB in the beginning and 68.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 608.06 ms. Allocated memory is still 115.3 MB. Free memory was 68.3 MB in the beginning and 86.1 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 85.5 MB in the end (delta: 609.7 kB). 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: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 492.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 60.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.9ms SsaConstructionTime, 106.6ms SatisfiabilityAnalysisTime, 59.9ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 20:15:04,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/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 20:15:07,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:15:07,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:15:07,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:15:07,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:15:07,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:15:07,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:15:07,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:15:07,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:15:07,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:15:07,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:15:07,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:15:07,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:15:07,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:15:07,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:15:07,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:15:07,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:15:07,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:15:07,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:15:07,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:15:07,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:15:07,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:15:07,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:15:07,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:15:07,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:15:07,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:15:07,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:15:07,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:15:07,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:15:07,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:15:07,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:15:07,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:15:07,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:15:07,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:15:07,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:15:07,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:15:07,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:15:07,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:15:07,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:15:07,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:15:07,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:15:07,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:15:07,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:15:07,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:15:07,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:15:07,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:15:07,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:15:07,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:15:07,506 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:15:07,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:15:07,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:15:07,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:15:07,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:15:07,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:15:07,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:15:07,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:15:07,510 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:15:07,510 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:15:07,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:15:07,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:15:07,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:15:07,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:15:07,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:15:07,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:15:07,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:15:07,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:07,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:15:07,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:15:07,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:15:07,514 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:15:07,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:15:07,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:15:07,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:15:07,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:15:07,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:15:07,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:15:07,516 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_003351ff-d890-4ab9-8209-a53aa9812493/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-21 20:15:07,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:15:08,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:15:08,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:15:08,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:15:08,022 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:15:08,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-21 20:15:08,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/c8091eb96/e9746520668d40f9927970977e49842f/FLAG4c323e31e [2021-10-21 20:15:08,729 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:15:08,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-21 20:15:08,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/c8091eb96/e9746520668d40f9927970977e49842f/FLAG4c323e31e [2021-10-21 20:15:09,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/data/c8091eb96/e9746520668d40f9927970977e49842f [2021-10-21 20:15:09,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:15:09,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:15:09,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:09,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:15:09,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:15:09,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f259ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09, skipping insertion in model container [2021-10-21 20:15:09,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:15:09,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:15:09,384 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_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-21 20:15:09,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:09,408 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:15:09,510 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_003351ff-d890-4ab9-8209-a53aa9812493/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-21 20:15:09,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:09,543 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:15:09,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09 WrapperNode [2021-10-21 20:15:09,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:09,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:09,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:15:09,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:15:09,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:09,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:15:09,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:15:09,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:15:09,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:15:09,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:15:09,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:15:09,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:15:09,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (1/1) ... [2021-10-21 20:15:09,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:09,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:09,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:15:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:15:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-21 20:15:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-21 20:15:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:15:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:15:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:15:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:15:09,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:15:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:15:14,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:14,108 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-21 20:15:14,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:14 BoogieIcfgContainer [2021-10-21 20:15:14,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:14,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:14,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:14,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:14,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:15:09" (1/3) ... [2021-10-21 20:15:14,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15905e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:14, skipping insertion in model container [2021-10-21 20:15:14,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:09" (2/3) ... [2021-10-21 20:15:14,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15905e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:14, skipping insertion in model container [2021-10-21 20:15:14,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:14" (3/3) ... [2021-10-21 20:15:14,124 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-21 20:15:14,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:14,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:15:14,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:14,192 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 20:15:14,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:15:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 20:15:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:15:14,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:14,240 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:14,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-21 20:15:14,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:14,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922530383] [2021-10-21 20:15:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:14,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:14,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:15:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:14,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:15:14,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:14,828 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 20:15:14,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:14,884 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 20:15:14,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:14,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922530383] [2021-10-21 20:15:14,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922530383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:14,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:14,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:15:14,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812800804] [2021-10-21 20:15:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:15:14,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:15:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:14,913 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 20:15:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:14,948 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-21 20:15:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:15:14,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2021-10-21 20:15:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:14,962 INFO L225 Difference]: With dead ends: 104 [2021-10-21 20:15:14,962 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 20:15:14,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 20:15:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 20:15:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 20:15:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-21 20:15:15,009 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-21 20:15:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:15,010 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-21 20:15:15,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 20:15:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-21 20:15:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:15:15,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:15,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:15,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:15,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:15,216 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:15,218 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-21 20:15:15,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:15,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055455054] [2021-10-21 20:15:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:15,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:15,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:15,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:15,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:15:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:15:15,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:15,952 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 20:15:15,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:16,200 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 20:15:16,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:16,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055455054] [2021-10-21 20:15:16,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055455054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:16,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:16,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 20:15:16,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900094558] [2021-10-21 20:15:16,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:15:16,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:15:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:16,206 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 20:15:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:17,717 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2021-10-21 20:15:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 9 [2021-10-21 20:15:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:17,721 INFO L225 Difference]: With dead ends: 105 [2021-10-21 20:15:17,721 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 20:15:17,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 300.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 20:15:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2021-10-21 20:15:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 20:15:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-10-21 20:15:17,734 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2021-10-21 20:15:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:17,734 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-10-21 20:15:17,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 20:15:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-10-21 20:15:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:15:17,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:17,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:17,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:17,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:17,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:17,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-10-21 20:15:17,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:17,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428394032] [2021-10-21 20:15:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:17,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:17,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:17,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:15:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:18,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:15:18,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:18,389 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 20:15:18,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:18,610 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 20:15:18,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:18,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428394032] [2021-10-21 20:15:18,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428394032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:18,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:18,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-21 20:15:18,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698138697] [2021-10-21 20:15:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:15:18,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:15:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:15:18,615 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 20:15:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:18,880 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2021-10-21 20:15:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:15:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 11 [2021-10-21 20:15:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:18,883 INFO L225 Difference]: With dead ends: 63 [2021-10-21 20:15:18,883 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:15:18,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 345.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:15:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-21 20:15:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 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 20:15:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2021-10-21 20:15:18,895 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2021-10-21 20:15:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:18,896 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2021-10-21 20:15:18,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 20:15:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2021-10-21 20:15:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:15:18,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:18,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:18,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:19,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:19,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-10-21 20:15:19,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:19,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700262216] [2021-10-21 20:15:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:19,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:19,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:19,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:19,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:15:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:19,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:15:19,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:19,994 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 20:15:19,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:21,043 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 20:15:21,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:21,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700262216] [2021-10-21 20:15:21,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700262216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:21,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:21,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-21 20:15:21,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227472443] [2021-10-21 20:15:21,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:15:21,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:15:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:15:21,048 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20:15:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:21,958 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2021-10-21 20:15:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:15:21,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20:15:21,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:21,960 INFO L225 Difference]: With dead ends: 60 [2021-10-21 20:15:21,960 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 20:15:21,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1519.8ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:15:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 20:15:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-21 20:15:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 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 20:15:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2021-10-21 20:15:21,969 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2021-10-21 20:15:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:21,970 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2021-10-21 20:15:21,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20:15:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2021-10-21 20:15:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 20:15:21,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:21,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:22,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:22,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:22,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:22,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2021-10-21 20:15:22,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:22,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730341448] [2021-10-21 20:15:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:22,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:22,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:22,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:15:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:22,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:15:22,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:22,833 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 20:15:22,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:23,321 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 20:15:23,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:23,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730341448] [2021-10-21 20:15:23,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730341448] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:23,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:23,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-21 20:15:23,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516690953] [2021-10-21 20:15:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:15:23,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:15:23,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:23,324 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 20:15:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:24,223 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2021-10-21 20:15:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 27 [2021-10-21 20:15:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:24,225 INFO L225 Difference]: With dead ends: 87 [2021-10-21 20:15:24,226 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 20:15:24,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 479.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 20:15:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-21 20:15:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 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 20:15:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-10-21 20:15:24,234 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2021-10-21 20:15:24,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:24,235 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-10-21 20:15:24,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 20:15:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-10-21 20:15:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:15:24,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:24,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:24,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:24,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:24,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:24,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2021-10-21 20:15:24,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:24,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449860670] [2021-10-21 20:15:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:24,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:24,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:15:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:24,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:24,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:15:24,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:15:24,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:24,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449860670] [2021-10-21 20:15:24,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449860670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:24,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:24,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:15:24,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143175869] [2021-10-21 20:15:24,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:24,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:24,945 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 20:15:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:25,112 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2021-10-21 20:15:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 32 [2021-10-21 20:15:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:25,115 INFO L225 Difference]: With dead ends: 84 [2021-10-21 20:15:25,115 INFO L226 Difference]: Without dead ends: 55 [2021-10-21 20:15:25,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-21 20:15:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-21 20:15:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 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 20:15:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2021-10-21 20:15:25,123 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2021-10-21 20:15:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:25,124 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2021-10-21 20:15:25,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 20:15:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-10-21 20:15:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:15:25,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:25,126 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:25,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:25,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:25,343 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:25,344 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2021-10-21 20:15:25,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:25,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110852539] [2021-10-21 20:15:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:25,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:25,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:25,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:15:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:25,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:15:25,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:15:25,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:15:26,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:26,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110852539] [2021-10-21 20:15:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110852539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:15:26,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:15:26,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 20:15:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623709139] [2021-10-21 20:15:26,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:15:26,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:15:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:26,233 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 20:15:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:26,566 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2021-10-21 20:15:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:15:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 38 [2021-10-21 20:15:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:26,569 INFO L225 Difference]: With dead ends: 96 [2021-10-21 20:15:26,569 INFO L226 Difference]: Without dead ends: 67 [2021-10-21 20:15:26,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 202.3ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-21 20:15:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-21 20:15:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 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 20:15:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-10-21 20:15:26,580 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2021-10-21 20:15:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:26,580 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-10-21 20:15:26,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 20:15:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-10-21 20:15:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-21 20:15:26,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:26,583 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:26,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:26,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:26,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:26,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2021-10-21 20:15:26,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:26,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090259225] [2021-10-21 20:15:26,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:15:26,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:26,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:26,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:15:26,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:15:26,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:26,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:15:26,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-21 20:15:27,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-21 20:15:28,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:28,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090259225] [2021-10-21 20:15:28,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090259225] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:28,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:28,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 20:15:28,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705621009] [2021-10-21 20:15:28,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:15:28,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:15:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:28,139 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 20:15:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:28,514 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-21 20:15:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 50 [2021-10-21 20:15:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:28,517 INFO L225 Difference]: With dead ends: 96 [2021-10-21 20:15:28,517 INFO L226 Difference]: Without dead ends: 75 [2021-10-21 20:15:28,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-21 20:15:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-21 20:15:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 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 20:15:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-10-21 20:15:28,526 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2021-10-21 20:15:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:28,526 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-10-21 20:15:28,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 20:15:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-10-21 20:15:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-21 20:15:28,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:28,530 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:28,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:28,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:28,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,745 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2021-10-21 20:15:28,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:28,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108873321] [2021-10-21 20:15:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:28,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:15:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:15:29,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:15:29,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:15:30,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:30,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108873321] [2021-10-21 20:15:30,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108873321] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:15:30,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:15:30,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-21 20:15:30,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260378114] [2021-10-21 20:15:30,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:15:30,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:15:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:15:30,611 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 20:15:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:31,611 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2021-10-21 20:15:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:15:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 56 [2021-10-21 20:15:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:31,613 INFO L225 Difference]: With dead ends: 136 [2021-10-21 20:15:31,614 INFO L226 Difference]: Without dead ends: 99 [2021-10-21 20:15:31,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 762.5ms TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:15:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-21 20:15:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-21 20:15:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 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 20:15:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2021-10-21 20:15:31,626 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2021-10-21 20:15:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:31,627 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2021-10-21 20:15:31,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 20:15:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2021-10-21 20:15:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 20:15:31,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:31,631 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:31,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:31,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:31,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 2 times [2021-10-21 20:15:31,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:31,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12693474] [2021-10-21 20:15:31,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:15:31,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:31,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:31,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:15:32,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:15:32,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:15:32,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:15:32,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:32,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-10-21 20:15:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-10-21 20:15:33,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:33,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-21 20:15:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-10-21 20:15:33,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:33,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12693474] [2021-10-21 20:15:33,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12693474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:33,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:33,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 20:15:33,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25649899] [2021-10-21 20:15:33,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:15:33,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:15:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:15:33,847 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 20:15:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:33,949 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2021-10-21 20:15:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 80 [2021-10-21 20:15:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:33,951 INFO L225 Difference]: With dead ends: 99 [2021-10-21 20:15:33,951 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:15:33,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 263.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:15:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:15:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:15:33,952 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 20:15:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:15:33,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-10-21 20:15:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:33,953 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:15:33,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 20:15:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:15:33,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:15:33,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:33,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:34,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:34,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:15:34,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:34,475 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-10-21 20:15:34,475 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-10-21 20:15:34,475 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-10-21 20:15:34,475 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2021-10-21 20:15:34,475 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-10-21 20:15:34,476 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-10-21 20:15:34,476 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-10-21 20:15:34,476 INFO L857 garLoopResultBuilder]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-10-21 20:15:34,476 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-10-21 20:15:34,476 INFO L857 garLoopResultBuilder]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L860 garLoopResultBuilder]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-10-21 20:15:34,477 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L857 garLoopResultBuilder]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-10-21 20:15:34,477 INFO L853 garLoopResultBuilder]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|)) [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-10-21 20:15:34,478 INFO L857 garLoopResultBuilder]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-10-21 20:15:34,479 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-10-21 20:15:34,479 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-10-21 20:15:34,479 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-21 20:15:34,479 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-21 20:15:34,479 INFO L857 garLoopResultBuilder]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-10-21 20:15:34,480 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-10-21 20:15:34,480 INFO L857 garLoopResultBuilder]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-10-21 20:15:34,480 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-10-21 20:15:34,480 INFO L857 garLoopResultBuilder]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-10-21 20:15:34,481 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-10-21 20:15:34,481 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-10-21 20:15:34,481 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-10-21 20:15:34,481 INFO L857 garLoopResultBuilder]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-10-21 20:15:34,482 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:15:34,482 INFO L857 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-10-21 20:15:34,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-10-21 20:15:34,482 INFO L853 garLoopResultBuilder]: At program point L140(lines 131 141) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|) ULTIMATE.start___signbit_double_~msw~0) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-21 20:15:34,483 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-21 20:15:34,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:15:34,483 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-10-21 20:15:34,483 INFO L857 garLoopResultBuilder]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-10-21 20:15:34,483 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-10-21 20:15:34,484 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-10-21 20:15:34,484 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-10-21 20:15:34,484 INFO L857 garLoopResultBuilder]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-10-21 20:15:34,484 INFO L853 garLoopResultBuilder]: At program point L134-2(lines 134 138) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-21 20:15:34,484 INFO L857 garLoopResultBuilder]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-10-21 20:15:34,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:34,501 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,502 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,503 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,503 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:34 BoogieIcfgContainer [2021-10-21 20:15:34,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:34,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:34,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:34,510 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:34,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:14" (3/4) ... [2021-10-21 20:15:34,514 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:15:34,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-21 20:15:34,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 20:15:34,530 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:34,530 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:34,559 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result [2021-10-21 20:15:34,560 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-21 20:15:34,561 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-21 20:15:34,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:34,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:34,593 INFO L168 Benchmark]: Toolchain (without parser) took 25551.87 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 41.8 MB in the beginning and 40.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,593 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:34,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.83 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 43.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 41.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,595 INFO L168 Benchmark]: Boogie Preprocessor took 42.34 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 39.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,596 INFO L168 Benchmark]: RCFGBuilder took 4473.17 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 39.9 MB in the end (delta: -691.9 kB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,596 INFO L168 Benchmark]: TraceAbstraction took 20397.14 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 39.4 MB in the beginning and 45.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,597 INFO L168 Benchmark]: Witness Printer took 81.79 ms. Allocated memory is still 79.7 MB. Free memory was 45.0 MB in the beginning and 40.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:34,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 502.83 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 43.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 41.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.34 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 39.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4473.17 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 39.9 MB in the end (delta: -691.9 kB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20397.14 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 39.4 MB in the beginning and 45.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 81.79 ms. Allocated memory is still 79.7 MB. Free memory was 45.0 MB in the beginning and 40.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * 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: 156]: 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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20304.6ms, OverallIterations: 10, TraceHistogramMax: 14, EmptinessCheckTime: 37.6ms, AutomataDifference: 5677.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 316.5ms, InitialAbstractionConstructionTime: 24.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 545 SDtfs, 610 SDslu, 1266 SDs, 0 SdLazy, 482 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3975.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4110.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 100.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 66 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 83.3ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 226.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 170.7ms SsaConstructionTime, 1314.4ms SatisfiabilityAnalysisTime, 9646.1ms InterpolantComputationTime, 326 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 632 ConstructedInterpolants, 26 QuantifiedInterpolants, 1658 SizeOfPredicates, 36 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 706/818 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: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant [2021-10-21 20:15:34,618 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,619 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,619 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,619 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,620 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,623 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,624 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-21 20:15:34,624 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: sign == 2147483648bv32 && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-10-21 20:15:34,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003351ff-d890-4ab9-8209-a53aa9812493/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...