./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:21:29,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:21:29,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:21:29,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:21:29,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:21:29,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:21:29,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:21:29,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:21:29,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:21:29,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:21:29,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:21:29,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:21:29,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:21:29,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:21:29,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:21:29,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:21:29,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:21:29,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:21:29,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:21:29,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:21:29,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:21:29,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:21:29,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:21:29,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:21:29,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:21:29,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:21:29,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:21:29,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:21:29,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:21:29,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:21:29,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:21:29,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:21:29,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:21:29,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:21:29,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:21:29,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:21:29,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:21:29,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:21:29,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:21:29,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:21:29,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:21:29,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:21:29,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:21:29,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:21:29,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:21:29,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:21:29,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:21:29,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:21:29,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:21:29,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:21:29,132 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:21:29,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:21:29,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:21:29,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:21:29,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:21:29,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:21:29,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:21:29,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:21:29,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:21:29,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:21:29,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:21:29,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:21:29,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:21:29,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:21:29,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:21:29,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:21:29,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:29,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:21:29,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:21:29,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:21:29,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:21:29,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:21:29,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:21:29,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:21:29,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:21:29,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:21:29,137 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_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-19 05:21:29,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:21:29,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:21:29,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:21:29,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:21:29,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:21:29,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-19 05:21:29,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/b36db0e29/f2e5b89fe26d48d8a6480804adcc41d2/FLAG3b4ab1e61 [2021-11-19 05:21:29,861 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:21:29,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-19 05:21:29,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/b36db0e29/f2e5b89fe26d48d8a6480804adcc41d2/FLAG3b4ab1e61 [2021-11-19 05:21:30,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/b36db0e29/f2e5b89fe26d48d8a6480804adcc41d2 [2021-11-19 05:21:30,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:21:30,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:21:30,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:30,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:21:30,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:21:30,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eadd8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30, skipping insertion in model container [2021-11-19 05:21:30,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:21:30,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:21:30,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-19 05:21:30,491 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:30,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:21:30,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-19 05:21:30,519 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:30,532 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:21:30,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30 WrapperNode [2021-11-19 05:21:30,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:30,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:21:30,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:21:30,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:21:30,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,567 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2021-11-19 05:21:30,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:21:30,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:21:30,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:21:30,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:21:30,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:21:30,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:21:30,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:21:30,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:21:30,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (1/1) ... [2021-11-19 05:21:30,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:21:30,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:21:30,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:21:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:21:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:21:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:21:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-19 05:21:30,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-19 05:21:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-19 05:21:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:21:30,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:21:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:21:30,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:21:30,733 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:21:30,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:21:30,865 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:21:30,871 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:21:30,871 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:21:30,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:30 BoogieIcfgContainer [2021-11-19 05:21:30,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:21:30,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:21:30,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:21:30,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:21:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:30" (1/3) ... [2021-11-19 05:21:30,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1598f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:30, skipping insertion in model container [2021-11-19 05:21:30,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:30" (2/3) ... [2021-11-19 05:21:30,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1598f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:30, skipping insertion in model container [2021-11-19 05:21:30,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:30" (3/3) ... [2021-11-19 05:21:30,888 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-11-19 05:21:30,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:21:30,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:21:30,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:21:30,969 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:21:30,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:21:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:21:31,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:31,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 525089809, now seen corresponding path program 1 times [2021-11-19 05:21:31,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:31,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140957630] [2021-11-19 05:21:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:21:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:21:31,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140957630] [2021-11-19 05:21:31,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140957630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:31,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:31,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:21:31,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361755642] [2021-11-19 05:21:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:31,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:21:31,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:21:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:21:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:21:31,239 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:31,275 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-19 05:21:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:21:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:21:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:31,286 INFO L225 Difference]: With dead ends: 51 [2021-11-19 05:21:31,289 INFO L226 Difference]: Without dead ends: 24 [2021-11-19 05:21:31,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:21:31,306 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:31,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-19 05:21:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-19 05:21:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-11-19 05:21:31,356 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 14 [2021-11-19 05:21:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:31,356 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-11-19 05:21:31,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-11-19 05:21:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:21:31,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:21:31,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash -395826406, now seen corresponding path program 1 times [2021-11-19 05:21:31,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:31,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197651420] [2021-11-19 05:21:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:21:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:21:31,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197651420] [2021-11-19 05:21:31,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197651420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:31,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:31,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:21:31,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95115374] [2021-11-19 05:21:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:31,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:31,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:21:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,562 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:31,617 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-19 05:21:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:21:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:31,621 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:21:31,625 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 05:21:31,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,628 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:31,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 101 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 05:21:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-19 05:21:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-19 05:21:31,646 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 15 [2021-11-19 05:21:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:31,647 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-19 05:21:31,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-19 05:21:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:21:31,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:21:31,662 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1214793076, now seen corresponding path program 1 times [2021-11-19 05:21:31,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:31,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814292939] [2021-11-19 05:21:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:21:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:21:31,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814292939] [2021-11-19 05:21:31,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814292939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:31,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:31,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:21:31,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724490492] [2021-11-19 05:21:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:31,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:31,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:21:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,755 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:31,786 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-11-19 05:21:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 05:21:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:31,788 INFO L225 Difference]: With dead ends: 37 [2021-11-19 05:21:31,788 INFO L226 Difference]: Without dead ends: 32 [2021-11-19 05:21:31,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,790 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:31,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:31,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-19 05:21:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-19 05:21:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-19 05:21:31,799 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 16 [2021-11-19 05:21:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:31,800 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-19 05:21:31,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-19 05:21:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:21:31,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:21:31,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 964506206, now seen corresponding path program 1 times [2021-11-19 05:21:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:31,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975264738] [2021-11-19 05:21:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:21:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:21:31,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975264738] [2021-11-19 05:21:31,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975264738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:31,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:31,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:21:31,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734906604] [2021-11-19 05:21:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:31,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:31,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:21:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,912 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:31,942 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-11-19 05:21:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 05:21:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:31,944 INFO L225 Difference]: With dead ends: 37 [2021-11-19 05:21:31,944 INFO L226 Difference]: Without dead ends: 32 [2021-11-19 05:21:31,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:31,946 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:31,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-19 05:21:31,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-19 05:21:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-19 05:21:31,954 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2021-11-19 05:21:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:31,955 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-19 05:21:31,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-19 05:21:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:21:31,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:21:31,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1139302728, now seen corresponding path program 1 times [2021-11-19 05:21:31,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:31,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672135104] [2021-11-19 05:21:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:21:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:32,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:21:32,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672135104] [2021-11-19 05:21:32,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672135104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:32,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:32,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:21:32,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718204362] [2021-11-19 05:21:32,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:32,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:32,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:21:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:32,041 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:32,068 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-11-19 05:21:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:32,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:21:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:32,070 INFO L225 Difference]: With dead ends: 37 [2021-11-19 05:21:32,070 INFO L226 Difference]: Without dead ends: 32 [2021-11-19 05:21:32,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:32,072 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:32,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-19 05:21:32,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-19 05:21:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-19 05:21:32,079 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 18 [2021-11-19 05:21:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:32,080 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-19 05:21:32,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-19 05:21:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:21:32,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:32,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:32,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:21:32,082 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1348210105, now seen corresponding path program 1 times [2021-11-19 05:21:32,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:21:32,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789558412] [2021-11-19 05:21:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:32,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:21:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:21:32,104 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:21:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:21:32,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:21:32,141 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:21:32,143 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:21:32,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:21:32,148 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 05:21:32,151 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:21:32,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:21:32 BoogieIcfgContainer [2021-11-19 05:21:32,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:21:32,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:21:32,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:21:32,177 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:21:32,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:30" (3/4) ... [2021-11-19 05:21:32,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:21:32,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:21:32,181 INFO L158 Benchmark]: Toolchain (without parser) took 1926.98ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.6MB in the beginning and 68.7MB in the end (delta: -4.1MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,182 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 80.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:21:32,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.66ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 79.4MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.84ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,183 INFO L158 Benchmark]: Boogie Preprocessor took 25.99ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,184 INFO L158 Benchmark]: RCFGBuilder took 278.07ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 65.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,184 INFO L158 Benchmark]: TraceAbstraction took 1300.75ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 65.1MB in the beginning and 68.7MB in the end (delta: -3.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-11-19 05:21:32,184 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 125.8MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:21:32,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 80.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.66ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 79.4MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.84ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.99ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.07ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 65.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1300.75ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 65.1MB in the beginning and 68.7MB in the end (delta: -3.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 125.8MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 74]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299] [L29] __uint32_t msw, lsw; VAL [\old(x)=4294967299, x=4294967299] [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; VAL [\old(x)=4294967299, \result=0, lsw=4294967297, msw=4293918721, x=4294967299] [L57] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299, \old(y)=4294967298, __fpclassify_double(x)=0, x=4294967299, y=4294967298] [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4294967299, \old(y)=4294967298, \result=4294967298, x=4294967299, y=4294967298] [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; VAL [\old(x)=4294967298, \result=0, x=4294967298] [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] reach_error() VAL [res=4294967298, x=4294967299, y=4294967298] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 514 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 160 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-11-19 05:21:32,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:21:34,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:21:34,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:21:34,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:21:34,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:21:34,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:21:34,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:21:34,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:21:34,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:21:34,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:21:34,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:21:34,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:21:34,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:21:34,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:21:34,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:21:34,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:21:34,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:21:34,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:21:34,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:21:34,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:21:34,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:21:34,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:21:34,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:21:34,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:21:34,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:21:34,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:21:34,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:21:34,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:21:34,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:21:34,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:21:34,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:21:34,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:21:34,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:21:34,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:21:34,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:21:34,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:21:34,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:21:34,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:21:34,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:21:34,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:21:34,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:21:34,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:21:34,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:21:34,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:21:34,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:21:34,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:21:34,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:21:34,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:21:34,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:21:34,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:21:34,752 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:21:34,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:21:34,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:21:34,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:21:34,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:21:34,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:21:34,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:21:34,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:21:34,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:21:34,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:21:34,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:21:34,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:21:34,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:21:34,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:21:34,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:21:34,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:21:34,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:21:34,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:34,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:21:34,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:21:34,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:21:34,757 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:21:34,757 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:21:34,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:21:34,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:21:34,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:21:34,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:21:34,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:21:34,758 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_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-19 05:21:35,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:21:35,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:21:35,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:21:35,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:21:35,146 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:21:35,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-19 05:21:35,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/dcf0021c8/643c64786a9547cbb84269df629d851a/FLAGc43b1f059 [2021-11-19 05:21:35,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:21:35,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-19 05:21:35,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/dcf0021c8/643c64786a9547cbb84269df629d851a/FLAGc43b1f059 [2021-11-19 05:21:36,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/data/dcf0021c8/643c64786a9547cbb84269df629d851a [2021-11-19 05:21:36,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:21:36,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:21:36,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:36,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:21:36,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:21:36,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e29d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36, skipping insertion in model container [2021-11-19 05:21:36,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:21:36,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:21:36,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-19 05:21:36,301 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:36,327 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:21:36,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-19 05:21:36,375 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:36,397 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:21:36,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36 WrapperNode [2021-11-19 05:21:36,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:36,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:21:36,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:21:36,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:21:36,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,450 INFO L137 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2021-11-19 05:21:36,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:21:36,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:21:36,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:21:36,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:21:36,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:21:36,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:21:36,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:21:36,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:21:36,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (1/1) ... [2021-11-19 05:21:36,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:21:36,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:21:36,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:21:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:21:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-19 05:21:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:21:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:21:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-19 05:21:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-19 05:21:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:21:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:21:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:21:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:21:36,705 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:21:36,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:21:36,926 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:21:36,931 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:21:36,932 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:21:36,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:36 BoogieIcfgContainer [2021-11-19 05:21:36,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:21:36,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:21:36,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:21:36,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:21:36,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:36" (1/3) ... [2021-11-19 05:21:36,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5f7683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:36, skipping insertion in model container [2021-11-19 05:21:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36" (2/3) ... [2021-11-19 05:21:36,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5f7683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:36, skipping insertion in model container [2021-11-19 05:21:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:36" (3/3) ... [2021-11-19 05:21:36,957 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-11-19 05:21:36,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:21:36,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:21:37,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:21:37,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:21:37,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:21:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:21:37,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:37,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:37,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 369317884, now seen corresponding path program 1 times [2021-11-19 05:21:37,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:37,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241428276] [2021-11-19 05:21:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:37,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:37,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:37,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:21:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:37,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:21:37,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:37,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:37,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:37,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241428276] [2021-11-19 05:21:37,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241428276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:37,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:37,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:21:37,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788281557] [2021-11-19 05:21:37,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:37,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:21:37,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:21:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:21:37,421 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:37,450 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2021-11-19 05:21:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:21:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:21:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:37,460 INFO L225 Difference]: With dead ends: 47 [2021-11-19 05:21:37,460 INFO L226 Difference]: Without dead ends: 22 [2021-11-19 05:21:37,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:21:37,467 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:37,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-19 05:21:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-19 05:21:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-19 05:21:37,507 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2021-11-19 05:21:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:37,507 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-19 05:21:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:21:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-19 05:21:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:21:37,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:37,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:37,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:37,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:37,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1711341929, now seen corresponding path program 1 times [2021-11-19 05:21:37,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:37,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531013088] [2021-11-19 05:21:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:37,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:37,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:37,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:37,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:21:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:37,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:21:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:37,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:38,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:38,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531013088] [2021-11-19 05:21:38,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531013088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:38,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:21:38,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744605451] [2021-11-19 05:21:38,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:38,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:21:38,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:21:38,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:38,027 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:21:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:38,078 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-19 05:21:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:21:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-19 05:21:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:38,082 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:21:38,082 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 05:21:38,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:38,084 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:38,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 05:21:38,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-19 05:21:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-19 05:21:38,094 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-19 05:21:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-19 05:21:38,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:21:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-19 05:21:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:21:38,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:38,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:38,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:38,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:38,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1502526892, now seen corresponding path program 1 times [2021-11-19 05:21:38,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:38,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898250210] [2021-11-19 05:21:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:38,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:38,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:38,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:38,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:21:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 05:21:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:38,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:38,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:38,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898250210] [2021-11-19 05:21:38,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898250210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:38,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:38,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 05:21:38,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804056953] [2021-11-19 05:21:38,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:38,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:21:38,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:21:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:21:38,783 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:39,008 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-19 05:21:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:21:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-19 05:21:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:39,010 INFO L225 Difference]: With dead ends: 34 [2021-11-19 05:21:39,010 INFO L226 Difference]: Without dead ends: 25 [2021-11-19 05:21:39,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:21:39,012 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:39,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 1 Unchecked, 0.1s Time] [2021-11-19 05:21:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-19 05:21:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-19 05:21:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-19 05:21:39,021 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2021-11-19 05:21:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:39,022 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-19 05:21:39,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:21:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-19 05:21:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:21:39,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:39,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:39,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:39,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,237 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash -451389748, now seen corresponding path program 1 times [2021-11-19 05:21:39,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:39,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765957507] [2021-11-19 05:21:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:39,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:39,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:39,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:21:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:39,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:21:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:21:39,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:21:39,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:39,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765957507] [2021-11-19 05:21:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765957507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:39,550 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:39,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:21:39,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12158395] [2021-11-19 05:21:39,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:39,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:21:39,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:21:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:39,554 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:21:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:39,632 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-19 05:21:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:21:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-19 05:21:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:39,634 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:21:39,634 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 05:21:39,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:39,636 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:39,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:21:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 05:21:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-19 05:21:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-11-19 05:21:39,643 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 22 [2021-11-19 05:21:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-11-19 05:21:39,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:21:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-19 05:21:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:21:39,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:39,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:39,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:39,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,863 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1662794800, now seen corresponding path program 1 times [2021-11-19 05:21:39,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:39,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698309993] [2021-11-19 05:21:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:39,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:39,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:39,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:21:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:39,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 05:21:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:21:40,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:21:40,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:40,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698309993] [2021-11-19 05:21:40,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698309993] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:40,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:40,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 05:21:40,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114236948] [2021-11-19 05:21:40,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:40,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:21:40,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:21:40,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:21:40,455 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:40,763 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-19 05:21:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:21:40,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-19 05:21:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:40,765 INFO L225 Difference]: With dead ends: 30 [2021-11-19 05:21:40,765 INFO L226 Difference]: Without dead ends: 22 [2021-11-19 05:21:40,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:21:40,767 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:40,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 3 Unchecked, 0.2s Time] [2021-11-19 05:21:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-19 05:21:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-19 05:21:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 05:21:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-19 05:21:40,772 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2021-11-19 05:21:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:40,772 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-19 05:21:40,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-19 05:21:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 05:21:40,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:40,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:40,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:40,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:40,974 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:21:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1824478471, now seen corresponding path program 1 times [2021-11-19 05:21:40,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:40,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952551854] [2021-11-19 05:21:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:40,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:40,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:40,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:40,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:21:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:41,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 05:21:41,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:21:41,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:21:41,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:41,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952551854] [2021-11-19 05:21:41,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952551854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:41,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:41,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 05:21:41,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635996071] [2021-11-19 05:21:41,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:41,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:21:41,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:21:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:21:41,432 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:41,586 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-19 05:21:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:21:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-19 05:21:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:41,586 INFO L225 Difference]: With dead ends: 22 [2021-11-19 05:21:41,586 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 05:21:41,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:21:41,588 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2021-11-19 05:21:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 05:21:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 05:21:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:21:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 05:21:41,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-19 05:21:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:41,590 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 05:21:41,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:21:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 05:21:41,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 05:21:41,592 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:21:41,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:41,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:41,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 05:21:41,890 INFO L858 garLoopResultBuilder]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2021-11-19 05:21:41,890 INFO L861 garLoopResultBuilder]: At program point L31-2(lines 31 36) the Hoare annotation is: true [2021-11-19 05:21:41,890 INFO L858 garLoopResultBuilder]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 28 53) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 52) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L861 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 28 53) the Hoare annotation is: true [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 28 53) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 52) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-19 05:21:41,891 INFO L858 garLoopResultBuilder]: For program point L62-2(line 62) no Hoare annotation was computed. [2021-11-19 05:21:41,892 INFO L854 garLoopResultBuilder]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res#1|))) [2021-11-19 05:21:41,892 INFO L861 garLoopResultBuilder]: At program point L77(lines 65 78) the Hoare annotation is: true [2021-11-19 05:21:41,892 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-11-19 05:21:41,892 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 05:21:41,892 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 05:21:41,892 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 05:21:41,892 INFO L854 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-19 05:21:41,893 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 59 60) no Hoare annotation was computed. [2021-11-19 05:21:41,893 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-19 05:21:41,893 INFO L858 garLoopResultBuilder]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2021-11-19 05:21:41,893 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-11-19 05:21:41,893 INFO L854 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) [2021-11-19 05:21:41,893 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-19 05:21:41,897 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 05:21:41,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:21:41,909 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-19 05:21:41,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-19 05:21:41,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:21:41 BoogieIcfgContainer [2021-11-19 05:21:41,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:21:41,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:21:41,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:21:41,912 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:21:41,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:36" (3/4) ... [2021-11-19 05:21:41,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 05:21:41,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2021-11-19 05:21:41,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-19 05:21:41,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-19 05:21:41,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 05:21:41,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 05:21:41,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-19 05:21:41,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-19 05:21:41,961 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:21:41,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:21:41,962 INFO L158 Benchmark]: Toolchain (without parser) took 5914.91ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 45.6MB in the beginning and 63.0MB in the end (delta: -17.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,963 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:21:41,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.44ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 34.2MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.56ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 32.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:21:41,964 INFO L158 Benchmark]: Boogie Preprocessor took 59.86ms. Allocated memory is still 65.0MB. Free memory was 32.6MB in the beginning and 49.0MB in the end (delta: -16.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,964 INFO L158 Benchmark]: RCFGBuilder took 421.07ms. Allocated memory is still 65.0MB. Free memory was 48.8MB in the beginning and 38.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,965 INFO L158 Benchmark]: TraceAbstraction took 4976.44ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 66.6MB in the end (delta: -29.2MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,965 INFO L158 Benchmark]: Witness Printer took 49.95ms. Allocated memory is still 86.0MB. Free memory was 66.6MB in the beginning and 63.0MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:21:41,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.44ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 34.2MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.56ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 32.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.86ms. Allocated memory is still 65.0MB. Free memory was 32.6MB in the beginning and 49.0MB in the end (delta: -16.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * RCFGBuilder took 421.07ms. Allocated memory is still 65.0MB. Free memory was 48.8MB in the beginning and 38.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4976.44ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 66.6MB in the end (delta: -29.2MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 49.95ms. Allocated memory is still 86.0MB. Free memory was 66.6MB in the beginning and 63.0MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 644 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 154 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 21 NumberOfFragments, 36 HoareAnnotationTreeSize, 11 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 218 ConstructedInterpolants, 15 QuantifiedInterpolants, 413 SizeOfPredicates, 30 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 36/36 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: 18]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant [2021-11-19 05:21:41,976 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-19 05:21:41,977 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 05:21:42,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732b4d3d-0835-41d0-97c5-4ddbfcd2b571/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE