./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:55:16,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:55:16,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:55:17,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:55:17,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:55:17,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:55:17,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:55:17,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:55:17,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:55:17,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:55:17,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:55:17,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:55:17,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:55:17,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:55:17,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:55:17,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:55:17,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:55:17,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:55:17,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:55:17,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:55:17,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:55:17,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:55:17,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:55:17,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:55:17,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:55:17,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:55:17,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:55:17,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:55:17,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:55:17,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:55:17,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:55:17,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:55:17,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:55:17,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:55:17,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:55:17,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:55:17,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:55:17,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:55:17,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:55:17,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:55:17,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:55:17,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:55:17,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:55:17,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:55:17,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:55:17,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:55:17,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:55:17,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:55:17,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:55:17,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:55:17,132 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:55:17,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:55:17,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:55:17,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:55:17,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:55:17,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:55:17,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:55:17,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:55:17,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:55:17,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:55:17,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:55:17,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:55:17,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:55:17,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:55:17,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:55:17,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:55:17,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:55:17,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:55:17,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:55:17,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:55:17,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:55:17,138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-12-21 11:55:17,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:55:17,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:55:17,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:55:17,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:55:17,435 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:55:17,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-21 11:55:17,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee14341a/e1f1f21fb0ef4e9a8e1a6e4dec63b782/FLAG869526800 [2021-12-21 11:55:17,936 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:55:17,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-21 11:55:17,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee14341a/e1f1f21fb0ef4e9a8e1a6e4dec63b782/FLAG869526800 [2021-12-21 11:55:18,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee14341a/e1f1f21fb0ef4e9a8e1a6e4dec63b782 [2021-12-21 11:55:18,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:55:18,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:55:18,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:55:18,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:55:18,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:55:18,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e5c889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18, skipping insertion in model container [2021-12-21 11:55:18,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:55:18,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:55:18,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-12-21 11:55:18,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:55:18,553 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:55:18,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-12-21 11:55:18,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:55:18,626 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:55:18,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18 WrapperNode [2021-12-21 11:55:18,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:55:18,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:55:18,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:55:18,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:55:18,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,717 INFO L137 Inliner]: procedures = 20, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2021-12-21 11:55:18,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:55:18,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:55:18,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:55:18,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:55:18,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:55:18,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:55:18,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:55:18,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:55:18,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (1/1) ... [2021-12-21 11:55:18,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:55:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:55:18,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:55:18,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:55:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:55:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-21 11:55:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-21 11:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-21 11:55:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-21 11:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:55:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 11:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-21 11:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:55:18,938 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:55:18,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:55:19,394 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:55:19,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:55:19,403 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-21 11:55:19,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:19 BoogieIcfgContainer [2021-12-21 11:55:19,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:55:19,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:55:19,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:55:19,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:55:19,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:55:18" (1/3) ... [2021-12-21 11:55:19,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed36442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:19, skipping insertion in model container [2021-12-21 11:55:19,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:18" (2/3) ... [2021-12-21 11:55:19,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed36442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:19, skipping insertion in model container [2021-12-21 11:55:19,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:19" (3/3) ... [2021-12-21 11:55:19,415 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-12-21 11:55:19,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:55:19,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:55:19,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:55:19,484 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 [2021-12-21 11:55:19,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:55:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:55:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 11:55:19,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:55:19,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:55:19,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:55:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:55:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2021-12-21 11:55:19,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:55:19,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542351135] [2021-12-21 11:55:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:55:19,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:55:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:55:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:55:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:55:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542351135] [2021-12-21 11:55:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542351135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:55:19,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:55:19,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:55:19,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138082642] [2021-12-21 11:55:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:55:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:55:19,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:55:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:55:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:55:19,761 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:55:19,808 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2021-12-21 11:55:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:55:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-21 11:55:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:55:19,819 INFO L225 Difference]: With dead ends: 195 [2021-12-21 11:55:19,819 INFO L226 Difference]: Without dead ends: 95 [2021-12-21 11:55:19,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:55:19,829 INFO L933 BasicCegarLoop]: 140 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, 140 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 [2021-12-21 11:55:19,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:55:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-21 11:55:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-21 11:55:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:55:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2021-12-21 11:55:19,886 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2021-12-21 11:55:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:55:19,886 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2021-12-21 11:55:19,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2021-12-21 11:55:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 11:55:19,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:55:19,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:55:19,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:55:19,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:55:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:55:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2021-12-21 11:55:19,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:55:19,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557346959] [2021-12-21 11:55:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:55:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:55:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:55:20,018 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:55:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:55:20,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:55:20,087 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:55:20,089 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:55:20,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:55:20,096 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 11:55:20,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:55:20,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:55:20 BoogieIcfgContainer [2021-12-21 11:55:20,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:55:20,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:55:20,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:55:20,156 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:55:20,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:19" (3/4) ... [2021-12-21 11:55:20,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:55:20,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:55:20,161 INFO L158 Benchmark]: Toolchain (without parser) took 1832.49ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 86.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,161 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:55:20,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.08ms. Allocated memory is still 119.5MB. Free memory was 89.3MB in the beginning and 91.8MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.32ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,164 INFO L158 Benchmark]: Boogie Preprocessor took 39.33ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 86.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,165 INFO L158 Benchmark]: RCFGBuilder took 648.36ms. Allocated memory is still 119.5MB. Free memory was 86.9MB in the beginning and 64.5MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,165 INFO L158 Benchmark]: TraceAbstraction took 747.30ms. Allocated memory is still 119.5MB. Free memory was 63.8MB in the beginning and 87.6MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:55:20,165 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 119.5MB. Free memory was 87.6MB in the beginning and 86.9MB in the end (delta: 735.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:55:20,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.08ms. Allocated memory is still 119.5MB. Free memory was 89.3MB in the beginning and 91.8MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.32ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.33ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 86.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 648.36ms. Allocated memory is still 119.5MB. Free memory was 86.9MB in the beginning and 64.5MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 747.30ms. Allocated memory is still 119.5MB. Free memory was 63.8MB in the beginning and 87.6MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 119.5MB. Free memory was 87.6MB in the beginning and 86.9MB in the end (delta: 735.5kB). Peak memory consumption was 2.1MB. 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: 273]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 267, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L266] double x = __VERIFIER_nondet_double(); [L267] double y = -0.0; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L269] COND TRUE x > 0.0 [L270] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L270] RET, EXPR __ieee754_atan2(y, x) [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, res == -0.0 && __signbit_double(res) == 1=0, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L272] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L273] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 140 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 11:55:20,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:55:22,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:55:22,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:55:22,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:55:22,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:55:22,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:55:22,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:55:22,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:55:22,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:55:22,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:55:22,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:55:22,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:55:22,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:55:22,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:55:22,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:55:22,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:55:22,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:55:22,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:55:22,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:55:22,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:55:22,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:55:22,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:55:22,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:55:22,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:55:22,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:55:22,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:55:22,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:55:22,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:55:22,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:55:22,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:55:22,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:55:22,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:55:22,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:55:22,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:55:22,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:55:22,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:55:22,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:55:22,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:55:22,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:55:22,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:55:22,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:55:22,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:55:22,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:55:22,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:55:22,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:55:22,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:55:22,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:55:22,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:55:22,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:55:22,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:55:22,265 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:55:22,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:55:22,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:55:22,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:55:22,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:55:22,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:55:22,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:55:22,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:55:22,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:55:22,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:55:22,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:55:22,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:55:22,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:55:22,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:55:22,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:55:22,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:55:22,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:55:22,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:55:22,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:55:22,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:55:22,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:55:22,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:55:22,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:55:22,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:55:22,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:55:22,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:55:22,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:55:22,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:55:22,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:55:22,272 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-12-21 11:55:22,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:55:22,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:55:22,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:55:22,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:55:22,627 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:55:22,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-21 11:55:22,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4693c2c86/9cbe00f5318c46de8fe9fb21ddee021d/FLAG5b96138f4 [2021-12-21 11:55:23,132 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:55:23,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-21 11:55:23,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4693c2c86/9cbe00f5318c46de8fe9fb21ddee021d/FLAG5b96138f4 [2021-12-21 11:55:23,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4693c2c86/9cbe00f5318c46de8fe9fb21ddee021d [2021-12-21 11:55:23,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:55:23,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:55:23,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:55:23,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:55:23,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:55:23,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:23,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18828409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23, skipping insertion in model container [2021-12-21 11:55:23,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:23,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:55:23,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:55:23,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-12-21 11:55:23,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:55:23,863 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:55:23,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-12-21 11:55:23,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:55:23,944 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:55:23,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23 WrapperNode [2021-12-21 11:55:23,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:55:23,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:55:23,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:55:23,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:55:23,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:23,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,016 INFO L137 Inliner]: procedures = 23, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2021-12-21 11:55:24,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:55:24,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:55:24,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:55:24,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:55:24,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:55:24,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:55:24,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:55:24,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:55:24,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (1/1) ... [2021-12-21 11:55:24,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:55:24,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:55:24,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:55:24,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:55:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:55:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-21 11:55:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-21 11:55:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:55:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:55:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-21 11:55:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-21 11:55:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-21 11:55:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-21 11:55:24,156 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-21 11:55:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-21 11:55:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:55:24,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:55:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-21 11:55:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:55:24,294 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:55:24,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:55:46,237 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:55:46,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:55:46,244 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-21 11:55:46,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:46 BoogieIcfgContainer [2021-12-21 11:55:46,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:55:46,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:55:46,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:55:46,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:55:46,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:55:23" (1/3) ... [2021-12-21 11:55:46,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d056bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:46, skipping insertion in model container [2021-12-21 11:55:46,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:23" (2/3) ... [2021-12-21 11:55:46,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d056bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:46, skipping insertion in model container [2021-12-21 11:55:46,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:46" (3/3) ... [2021-12-21 11:55:46,253 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-12-21 11:55:46,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:55:46,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:55:46,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:55:46,311 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 [2021-12-21 11:55:46,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:55:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:55:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 11:55:46,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:55:46,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:55:46,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:55:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:55:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2021-12-21 11:55:46,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:55:46,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483492093] [2021-12-21 11:55:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:55:46,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:55:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:55:46,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:55:46,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:55:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:55:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 11:55:46,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:55:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:55:47,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:55:47,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:55:47,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483492093] [2021-12-21 11:55:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483492093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:55:47,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:55:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:55:47,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536073046] [2021-12-21 11:55:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:55:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:55:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:55:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:55:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:55:47,077 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:55:47,132 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2021-12-21 11:55:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:55:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-21 11:55:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:55:47,145 INFO L225 Difference]: With dead ends: 195 [2021-12-21 11:55:47,145 INFO L226 Difference]: Without dead ends: 95 [2021-12-21 11:55:47,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:55:47,154 INFO L933 BasicCegarLoop]: 140 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, 140 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 [2021-12-21 11:55:47,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:55:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-21 11:55:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-21 11:55:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:55:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2021-12-21 11:55:47,189 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2021-12-21 11:55:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:55:47,189 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2021-12-21 11:55:47,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2021-12-21 11:55:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 11:55:47,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:55:47,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:55:47,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 11:55:47,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:55:47,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:55:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:55:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2021-12-21 11:55:47,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:55:47,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636308512] [2021-12-21 11:55:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:55:47,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:55:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:55:47,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:55:47,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 11:55:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:55:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 11:55:47,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:55:48,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-21 11:55:52,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 11:55:52,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-21 11:55:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:55:55,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:55:55,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:55:55,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636308512] [2021-12-21 11:55:55,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636308512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:55:55,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:55:55,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 11:55:55,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358079040] [2021-12-21 11:55:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:55:55,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 11:55:55,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:55:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 11:55:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:55:55,466 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:55:56,668 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2021-12-21 11:55:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 11:55:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-21 11:55:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:55:56,672 INFO L225 Difference]: With dead ends: 104 [2021-12-21 11:55:56,672 INFO L226 Difference]: Without dead ends: 95 [2021-12-21 11:55:56,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 11:55:56,674 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 5 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:55:56,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 828 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 73 Unchecked, 0.1s Time] [2021-12-21 11:55:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-21 11:55:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-21 11:55:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:55:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2021-12-21 11:55:56,685 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 14 [2021-12-21 11:55:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:55:56,685 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2021-12-21 11:55:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:55:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2021-12-21 11:55:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 11:55:56,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:55:56,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:55:56,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 11:55:56,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:55:56,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:55:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:55:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2064728897, now seen corresponding path program 1 times [2021-12-21 11:55:56,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:55:56,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608039009] [2021-12-21 11:55:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:55:56,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:55:56,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:55:56,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:55:56,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 11:55:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:55:57,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 11:55:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:55:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:55:59,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:55:59,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:55:59,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608039009] [2021-12-21 11:55:59,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608039009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:55:59,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:55:59,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 11:55:59,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503438771] [2021-12-21 11:55:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:55:59,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 11:55:59,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:55:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 11:55:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:55:59,387 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:00,063 INFO L93 Difference]: Finished difference Result 114 states and 153 transitions. [2021-12-21 11:56:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 11:56:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 11:56:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:00,065 INFO L225 Difference]: With dead ends: 114 [2021-12-21 11:56:00,065 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 11:56:00,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:56:00,066 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 75 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:00,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 456 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2021-12-21 11:56:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 11:56:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-21 11:56:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2021-12-21 11:56:00,078 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 19 [2021-12-21 11:56:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:00,079 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2021-12-21 11:56:00,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2021-12-21 11:56:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 11:56:00,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:00,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:00,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-21 11:56:00,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:00,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2007470595, now seen corresponding path program 1 times [2021-12-21 11:56:00,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364847485] [2021-12-21 11:56:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:00,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:00,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:56:00,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 11:56:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:00,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 11:56:00,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:01,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-21 11:56:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:03,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:03,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:03,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364847485] [2021-12-21 11:56:03,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364847485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:03,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:03,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 11:56:03,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770628620] [2021-12-21 11:56:03,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:03,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 11:56:03,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 11:56:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 11:56:03,356 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:04,141 INFO L93 Difference]: Finished difference Result 179 states and 248 transitions. [2021-12-21 11:56:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 11:56:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 11:56:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:04,146 INFO L225 Difference]: With dead ends: 179 [2021-12-21 11:56:04,148 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 11:56:04,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:56:04,150 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 19 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:04,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-21 11:56:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 11:56:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-21 11:56:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 88 states have internal predecessors, (124), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2021-12-21 11:56:04,172 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 19 [2021-12-21 11:56:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:04,173 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2021-12-21 11:56:04,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2021-12-21 11:56:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 11:56:04,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:04,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:04,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:04,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:04,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 681986241, now seen corresponding path program 1 times [2021-12-21 11:56:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772043074] [2021-12-21 11:56:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:04,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:04,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:04,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:56:04,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 11:56:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:04,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 11:56:04,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:07,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:07,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:07,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772043074] [2021-12-21 11:56:07,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772043074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:07,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:07,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 11:56:07,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054736468] [2021-12-21 11:56:07,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:07,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 11:56:07,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 11:56:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:56:07,545 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:09,371 INFO L93 Difference]: Finished difference Result 184 states and 255 transitions. [2021-12-21 11:56:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 11:56:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 11:56:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:09,373 INFO L225 Difference]: With dead ends: 184 [2021-12-21 11:56:09,373 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 11:56:09,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 11:56:09,375 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 20 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:09,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 751 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 26 Unchecked, 1.1s Time] [2021-12-21 11:56:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 11:56:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-21 11:56:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 88 states have internal predecessors, (123), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2021-12-21 11:56:09,386 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 19 [2021-12-21 11:56:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:09,386 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2021-12-21 11:56:09,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2021-12-21 11:56:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 11:56:09,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:09,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:09,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:09,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:09,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1837973693, now seen corresponding path program 1 times [2021-12-21 11:56:09,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:09,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905881373] [2021-12-21 11:56:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:09,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:09,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:09,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:56:09,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 11:56:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:09,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 11:56:09,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:11,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:11,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:11,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905881373] [2021-12-21 11:56:11,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905881373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:11,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:11,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 11:56:11,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373514082] [2021-12-21 11:56:11,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:11,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 11:56:11,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:11,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 11:56:11,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 11:56:11,768 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:17,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:56:19,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:56:21,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:56:22,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:56:23,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:23,555 INFO L93 Difference]: Finished difference Result 107 states and 142 transitions. [2021-12-21 11:56:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 11:56:23,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 11:56:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:23,557 INFO L225 Difference]: With dead ends: 107 [2021-12-21 11:56:23,557 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 11:56:23,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 11:56:23,558 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 177 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:23,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 451 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-12-21 11:56:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 11:56:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2021-12-21 11:56:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2021-12-21 11:56:23,566 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 19 [2021-12-21 11:56:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:23,566 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2021-12-21 11:56:23,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:56:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2021-12-21 11:56:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 11:56:23,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:23,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:23,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:23,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:23,785 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1229096430, now seen corresponding path program 1 times [2021-12-21 11:56:23,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543664567] [2021-12-21 11:56:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:23,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:23,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:56:23,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 11:56:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:24,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 11:56:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:24,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-21 11:56:27,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8