./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:06:06,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:06:06,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:06:06,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:06:06,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:06:06,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:06:06,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:06:06,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:06:06,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:06:06,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:06:06,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:06:06,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:06:06,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:06:06,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:06:06,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:06:06,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:06:06,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:06:06,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:06:06,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:06:06,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:06:06,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:06:06,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:06:06,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:06:06,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:06:06,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:06:06,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:06:06,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:06:06,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:06:06,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:06:06,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:06:06,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:06:06,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:06:06,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:06:06,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:06:06,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:06:06,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:06:06,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:06:06,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:06:06,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:06:06,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:06:06,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:06:06,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:06:06,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:06:06,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:06:06,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:06:06,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:06:06,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:06:06,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:06:06,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:06:06,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:06:06,233 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:06:06,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:06:06,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:06:06,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:06:06,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:06:06,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:06:06,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:06:06,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:06:06,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:06:06,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:06:06,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:06:06,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:06,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:06:06,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:06:06,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:06:06,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:06:06,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:06:06,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:06:06,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:06:06,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:06:06,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:06:06,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2021-11-20 06:06:06,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:06:06,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:06:06,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:06:06,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:06:06,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:06:06,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-20 06:06:06,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/f97469519/094f83013a2546a0b218796b73c0d21d/FLAGb9d11a8f2 [2021-11-20 06:06:07,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:06:07,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-20 06:06:07,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/f97469519/094f83013a2546a0b218796b73c0d21d/FLAGb9d11a8f2 [2021-11-20 06:06:07,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/f97469519/094f83013a2546a0b218796b73c0d21d [2021-11-20 06:06:07,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:06:07,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:06:07,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:07,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:06:07,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:06:07,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106d05df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07, skipping insertion in model container [2021-11-20 06:06:07,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:06:07,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:06:07,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-20 06:06:07,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:07,718 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:06:07,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-20 06:06:07,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:07,760 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:06:07,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07 WrapperNode [2021-11-20 06:06:07,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:07,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:07,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:06:07,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:06:07,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,795 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2021-11-20 06:06:07,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:07,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:06:07,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:06:07,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:06:07,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:06:07,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:06:07,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:06:07,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:06:07,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (1/1) ... [2021-11-20 06:06:07,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:07,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:06:07,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:06:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:06:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:06:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:06:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:06:07,987 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:06:07,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:06:08,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:06:08,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:06:08,120 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:06:08,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:08 BoogieIcfgContainer [2021-11-20 06:06:08,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:06:08,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:06:08,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:06:08,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:06:08,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:06:07" (1/3) ... [2021-11-20 06:06:08,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290b79ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:08, skipping insertion in model container [2021-11-20 06:06:08,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:07" (2/3) ... [2021-11-20 06:06:08,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290b79ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:08, skipping insertion in model container [2021-11-20 06:06:08,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:08" (3/3) ... [2021-11-20 06:06:08,135 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-20 06:06:08,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:06:08,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:06:08,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:06:08,223 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:06:08,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:06:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:06:08,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:08,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:06:08,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-20 06:06:08,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275682619] [2021-11-20 06:06:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:08,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:08,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275682619] [2021-11-20 06:06:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275682619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:08,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:08,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:06:08,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221451031] [2021-11-20 06:06:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:08,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:06:08,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:06:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:06:08,510 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:08,524 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-20 06:06:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:06:08,526 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:06:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:08,534 INFO L225 Difference]: With dead ends: 19 [2021-11-20 06:06:08,534 INFO L226 Difference]: Without dead ends: 7 [2021-11-20 06:06:08,537 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 [2021-11-20 06:06:08,544 INFO L933 BasicCegarLoop]: 10 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, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:08,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-20 06:06:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-20 06:06:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-20 06:06:08,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-20 06:06:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:08,576 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-20 06:06:08,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-20 06:06:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:06:08,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:08,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:06:08,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:06:08,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-20 06:06:08,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820231636] [2021-11-20 06:06:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:08,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:06:08,632 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:06:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:06:08,683 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:06:08,683 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:06:08,686 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:06:08,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:06:08,697 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:06:08,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:06:08,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:06:08 BoogieIcfgContainer [2021-11-20 06:06:08,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:06:08,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:06:08,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:06:08,744 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:06:08,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:08" (3/4) ... [2021-11-20 06:06:08,748 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:06:08,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:06:08,750 INFO L158 Benchmark]: Toolchain (without parser) took 1267.60ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 51.5MB in the beginning and 110.6MB in the end (delta: -59.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:06:08,751 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:06:08,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.88ms. Allocated memory is still 90.2MB. Free memory was 51.3MB in the beginning and 65.8MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:06:08,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.17ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:06:08,756 INFO L158 Benchmark]: Boogie Preprocessor took 27.03ms. Allocated memory is still 90.2MB. Free memory was 64.4MB in the beginning and 63.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:06:08,759 INFO L158 Benchmark]: RCFGBuilder took 298.49ms. Allocated memory is still 90.2MB. Free memory was 63.4MB in the beginning and 55.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:06:08,760 INFO L158 Benchmark]: TraceAbstraction took 616.21ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 54.6MB in the beginning and 111.6MB in the end (delta: -57.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:06:08,760 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 134.2MB. Free memory was 111.6MB in the beginning and 110.6MB in the end (delta: 962.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:06:08,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.88ms. Allocated memory is still 90.2MB. Free memory was 51.3MB in the beginning and 65.8MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.17ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.03ms. Allocated memory is still 90.2MB. Free memory was 64.4MB in the beginning and 63.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.49ms. Allocated memory is still 90.2MB. Free memory was 63.4MB in the beginning and 55.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 616.21ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 54.6MB in the beginning and 111.6MB in the end (delta: -57.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 134.2MB. Free memory was 111.6MB in the beginning and 110.6MB in the end (delta: 962.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 38]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=49, x=49] [L38] reach_error() VAL [IN=49, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 10 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, 10 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=11occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-11-20 06:06:08,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:06:11,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:06:11,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:06:11,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:06:11,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:06:11,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:06:11,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:06:11,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:06:11,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:06:11,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:06:11,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:06:11,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:06:11,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:06:11,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:06:11,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:06:11,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:06:11,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:06:11,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:06:11,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:06:11,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:06:11,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:06:11,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:06:11,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:06:11,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:06:11,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:06:11,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:06:11,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:06:11,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:06:11,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:06:11,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:06:11,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:06:11,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:06:11,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:06:11,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:06:11,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:06:11,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:06:11,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:06:11,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:06:11,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:06:11,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:06:11,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:06:11,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:06:11,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:06:11,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:06:11,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:06:11,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:06:11,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:06:11,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:06:11,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:06:11,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:06:11,463 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:06:11,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:06:11,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:06:11,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:06:11,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:06:11,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:06:11,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:06:11,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:06:11,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:06:11,466 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:06:11,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:06:11,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:06:11,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:06:11,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:06:11,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:06:11,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:06:11,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:06:11,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:06:11,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:11,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:06:11,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:06:11,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:06:11,470 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:06:11,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:06:11,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:06:11,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:06:11,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:06:11,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:06:11,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:06:11,472 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2021-11-20 06:06:11,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:06:11,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:06:11,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:06:11,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:06:11,941 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:06:11,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-20 06:06:12,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/ea9d94e84/92903f2f29984ad8b1674768c15eb263/FLAG3ebc4529e [2021-11-20 06:06:12,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:06:12,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-20 06:06:12,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/ea9d94e84/92903f2f29984ad8b1674768c15eb263/FLAG3ebc4529e [2021-11-20 06:06:12,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/data/ea9d94e84/92903f2f29984ad8b1674768c15eb263 [2021-11-20 06:06:12,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:06:12,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:06:12,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:12,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:06:12,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:06:12,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:12" (1/1) ... [2021-11-20 06:06:12,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2269fb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:12, skipping insertion in model container [2021-11-20 06:06:12,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:12" (1/1) ... [2021-11-20 06:06:12,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:06:12,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:06:13,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-20 06:06:13,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:13,137 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:06:13,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-20 06:06:13,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:13,175 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:06:13,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13 WrapperNode [2021-11-20 06:06:13,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:13,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:13,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:06:13,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:06:13,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,217 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-20 06:06:13,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:13,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:06:13,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:06:13,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:06:13,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:06:13,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:06:13,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:06:13,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:06:13,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (1/1) ... [2021-11-20 06:06:13,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:13,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:13,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:06:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:06:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:06:13,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:06:13,433 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:06:13,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:06:15,593 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:06:15,599 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:06:15,599 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:06:15,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:15 BoogieIcfgContainer [2021-11-20 06:06:15,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:06:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:06:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:06:15,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:06:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:06:12" (1/3) ... [2021-11-20 06:06:15,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22499a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:15, skipping insertion in model container [2021-11-20 06:06:15,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:13" (2/3) ... [2021-11-20 06:06:15,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22499a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:15, skipping insertion in model container [2021-11-20 06:06:15,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:15" (3/3) ... [2021-11-20 06:06:15,610 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-20 06:06:15,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:06:15,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:06:15,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:06:15,670 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:06:15,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:06:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:06:15,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:15,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:06:15,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-20 06:06:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:15,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595821345] [2021-11-20 06:06:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:15,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:15,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:15,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:06:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:16,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:06:16,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:16,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:16,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595821345] [2021-11-20 06:06:16,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595821345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:16,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:16,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:06:16,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808428789] [2021-11-20 06:06:16,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:16,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:06:16,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:06:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:06:16,520 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:16,533 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-20 06:06:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:06:16,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:06:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:16,547 INFO L225 Difference]: With dead ends: 19 [2021-11-20 06:06:16,547 INFO L226 Difference]: Without dead ends: 7 [2021-11-20 06:06:16,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:06:16,553 INFO L933 BasicCegarLoop]: 10 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, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:16,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-20 06:06:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-20 06:06:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-20 06:06:16,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-20 06:06:16,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:16,579 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-20 06:06:16,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-20 06:06:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:06:16,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:16,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:06:16,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 06:06:16,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:16,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-20 06:06:16,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:16,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994994365] [2021-11-20 06:06:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:16,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:16,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:16,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:07:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:07:34,917 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:07:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:07:37,805 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:07:37,805 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:07:37,807 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:07:37,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:07:38,012 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:07:38,016 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:07:38,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:07:38 BoogieIcfgContainer [2021-11-20 06:07:38,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:07:38,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:07:38,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:07:38,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:07:38,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:15" (3/4) ... [2021-11-20 06:07:38,058 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 06:07:38,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:07:38,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:07:38,117 INFO L158 Benchmark]: Toolchain (without parser) took 85177.69ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 34.0MB in the end (delta: -379.8kB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,119 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:07:38,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.66ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 52.3MB in the end (delta: -18.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.60ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 50.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,123 INFO L158 Benchmark]: Boogie Preprocessor took 56.06ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:07:38,124 INFO L158 Benchmark]: RCFGBuilder took 2312.69ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,124 INFO L158 Benchmark]: TraceAbstraction took 82436.12ms. Allocated memory is still 69.2MB. Free memory was 40.9MB in the beginning and 35.8MB in the end (delta: 5.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,126 INFO L158 Benchmark]: Witness Printer took 73.22ms. Allocated memory is still 69.2MB. Free memory was 35.8MB in the beginning and 34.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:07:38,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.66ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 52.3MB in the end (delta: -18.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.60ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 50.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.06ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2312.69ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 82436.12ms. Allocated memory is still 69.2MB. Free memory was 40.9MB in the beginning and 35.8MB in the end (delta: 5.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Witness Printer took 73.22ms. Allocated memory is still 69.2MB. Free memory was 35.8MB in the beginning and 34.0MB in the end (delta: 1.8MB). 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 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999952912330627, result=1.398436188697815, x=0.9999952912330627] [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999952912330627, result=1.398436188697815, x=0.9999952912330627] [L38] reach_error() VAL [IN=0.9999952912330627, result=1.398436188697815, x=0.9999952912330627] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.4s, 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, 10 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, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 78.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2021-11-20 06:07:38,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab4825a-737e-4f8a-a19b-18c2a08f4d98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE