./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/sine_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c9d4aa97272954ae32108b6910bcaa7825a2434a76b0876a3de03aaa87e2ff7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:38:51,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:38:51,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:38:51,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:38:51,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:38:51,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:38:51,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:38:51,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:38:51,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:38:51,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:38:51,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:38:51,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:38:51,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:38:51,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:38:51,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:38:51,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:38:51,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:38:51,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:38:51,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:38:51,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:38:51,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:38:51,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:38:51,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:38:51,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:38:51,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:38:51,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:38:51,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:38:51,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:38:51,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:38:51,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:38:51,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:38:51,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:38:51,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:38:51,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:38:51,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:38:51,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:38:51,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:38:51,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:38:51,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:38:51,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:38:51,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:38:51,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:38:51,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:38:51,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:38:51,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:38:51,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:38:51,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:38:51,215 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:38:51,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:38:51,215 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:38:51,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:38:51,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:38:51,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:38:51,216 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:38:51,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:38:51,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:38:51,217 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:38:51,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:38:51,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:38:51,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:38:51,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:38:51,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:38:51,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:38:51,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:38:51,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:38:51,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:38:51,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:38:51,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:38:51,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:38:51,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:38:51,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:38:51,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:38:51,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:51,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:38:51,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:38:51,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:38:51,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:38:51,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:38:51,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:38:51,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:38:51,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:38:51,223 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9d4aa97272954ae32108b6910bcaa7825a2434a76b0876a3de03aaa87e2ff7 [2021-11-07 01:38:51,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:38:51,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:38:51,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:38:51,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:38:51,550 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:38:51,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/sine_2.i [2021-11-07 01:38:51,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/868276142/8cab4ce9a99149d298aa73f0293df1ec/FLAG1008c4097 [2021-11-07 01:38:52,121 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:38:52,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i [2021-11-07 01:38:52,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/868276142/8cab4ce9a99149d298aa73f0293df1ec/FLAG1008c4097 [2021-11-07 01:38:52,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/868276142/8cab4ce9a99149d298aa73f0293df1ec [2021-11-07 01:38:52,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:38:52,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:38:52,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:52,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:38:52,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:38:52,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd9fbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52, skipping insertion in model container [2021-11-07 01:38:52,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:38:52,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:38:52,741 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i[1143,1156] [2021-11-07 01:38:52,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:38:52,752 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:38:52,768 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i[1143,1156] [2021-11-07 01:38:52,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:38:52,783 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:38:52,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52 WrapperNode [2021-11-07 01:38:52,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:52,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:38:52,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:38:52,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:38:52,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:38:52,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:38:52,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:38:52,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:38:52,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:38:52,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:38:52,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:38:52,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:38:52,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (1/1) ... [2021-11-07 01:38:52,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:52,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:52,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:38:52,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:38:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:38:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:38:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:38:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:38:53,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:38:53,190 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:38:53,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:38:53 BoogieIcfgContainer [2021-11-07 01:38:53,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:38:53,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:38:53,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:38:53,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:38:53,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:38:52" (1/3) ... [2021-11-07 01:38:53,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad0c43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:38:53, skipping insertion in model container [2021-11-07 01:38:53,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:52" (2/3) ... [2021-11-07 01:38:53,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad0c43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:38:53, skipping insertion in model container [2021-11-07 01:38:53,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:38:53" (3/3) ... [2021-11-07 01:38:53,219 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_2.i [2021-11-07 01:38:53,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:38:53,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:38:53,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:38:53,303 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=FINITE_AUTOMATA, 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 [2021-11-07 01:38:53,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:38:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-11-07 01:38:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:38:53,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:53,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:38:53,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:38:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-07 01:38:53,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:38:53,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409300656] [2021-11-07 01:38:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:53,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:38:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:38:53,458 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:38:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:38:53,520 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:38:53,524 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:38:53,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:38:53,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:38:53,531 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:38:53,534 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:38:53,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:38:53 BoogieIcfgContainer [2021-11-07 01:38:53,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:38:53,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:38:53,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:38:53,569 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:38:53,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:38:53" (3/4) ... [2021-11-07 01:38:53,574 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:38:53,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:38:53,581 INFO L168 Benchmark]: Toolchain (without parser) took 1083.51 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 62.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:53,583 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 115.3 MB. Free memory was 93.4 MB in the beginning and 93.4 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:38:53,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.97 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 89.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:53,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:38:53,587 INFO L168 Benchmark]: Boogie Preprocessor took 18.99 ms. Allocated memory is still 115.3 MB. Free memory was 88.0 MB in the beginning and 87.3 MB in the end (delta: 663.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:53,588 INFO L168 Benchmark]: RCFGBuilder took 355.69 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 76.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:53,595 INFO L168 Benchmark]: TraceAbstraction took 366.01 ms. Allocated memory is still 115.3 MB. Free memory was 75.8 MB in the beginning and 63.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:53,597 INFO L168 Benchmark]: Witness Printer took 6.52 ms. Allocated memory is still 115.3 MB. Free memory was 63.2 MB in the beginning and 62.9 MB in the end (delta: 345.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:38:53,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 115.3 MB. Free memory was 93.4 MB in the beginning and 93.4 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.97 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 89.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.99 ms. Allocated memory is still 115.3 MB. Free memory was 88.0 MB in the beginning and 87.3 MB in the end (delta: 663.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 355.69 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 76.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366.01 ms. Allocated memory is still 115.3 MB. Free memory was 75.8 MB in the beginning and 63.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.52 ms. Allocated memory is still 115.3 MB. Free memory was 63.2 MB in the beginning and 62.9 MB in the end (delta: 345.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 28]: 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 27, overapproximation of someBinaryArithmeticFLOAToperation at line 25. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 1.0f && result >= -1.0f) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-07 01:38:53,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/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_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c9d4aa97272954ae32108b6910bcaa7825a2434a76b0876a3de03aaa87e2ff7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:38:56,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:38:56,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:38:56,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:38:56,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:38:56,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:38:56,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:38:56,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:38:56,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:38:56,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:38:56,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:38:56,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:38:56,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:38:56,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:38:56,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:38:56,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:38:56,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:38:56,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:38:56,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:38:56,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:38:56,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:38:56,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:38:56,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:38:56,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:38:56,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:38:56,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:38:56,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:38:56,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:38:56,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:38:56,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:38:56,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:38:56,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:38:56,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:38:56,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:38:56,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:38:56,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:38:56,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:38:56,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:38:56,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:38:56,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:38:56,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:38:56,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:38:56,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:38:56,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:38:56,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:38:56,329 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:38:56,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:38:56,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:38:56,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:38:56,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:38:56,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:38:56,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:38:56,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:38:56,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:38:56,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:38:56,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:38:56,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:38:56,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:38:56,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:38:56,333 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:38:56,333 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:38:56,333 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:38:56,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:38:56,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:38:56,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:38:56,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:38:56,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:38:56,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:38:56,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:56,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:38:56,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:38:56,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:38:56,335 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:38:56,335 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:56,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:38:56,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:38:56,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:38:56,336 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_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9d4aa97272954ae32108b6910bcaa7825a2434a76b0876a3de03aaa87e2ff7 [2021-11-07 01:38:56,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:38:56,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:38:56,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:38:56,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:38:56,760 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:38:56,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/sine_2.i [2021-11-07 01:38:56,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/0e1f1895f/5f697fb3fa78477eb5d69b28c020594e/FLAG27790032b [2021-11-07 01:38:57,303 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:38:57,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i [2021-11-07 01:38:57,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/0e1f1895f/5f697fb3fa78477eb5d69b28c020594e/FLAG27790032b [2021-11-07 01:38:57,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/data/0e1f1895f/5f697fb3fa78477eb5d69b28c020594e [2021-11-07 01:38:57,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:38:57,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:38:57,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:57,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:38:57,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:38:57,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:57,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481283e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57, skipping insertion in model container [2021-11-07 01:38:57,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:57,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:38:57,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:38:57,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i[1143,1156] [2021-11-07 01:38:57,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:38:57,896 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:38:57,913 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/sv-benchmarks/c/floats-cdfpl/sine_2.i[1143,1156] [2021-11-07 01:38:57,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:38:57,954 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:38:57,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57 WrapperNode [2021-11-07 01:38:57,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:57,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:38:57,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:38:57,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:38:57,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:57,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:38:58,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:38:58,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:38:58,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:38:58,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:38:58,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:38:58,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:38:58,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:38:58,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (1/1) ... [2021-11-07 01:38:58,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:58,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:58,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:38:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:38:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:38:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:38:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:38:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:39:00,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:39:00,584 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:39:00,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:00 BoogieIcfgContainer [2021-11-07 01:39:00,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:39:00,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:39:00,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:39:00,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:39:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:38:57" (1/3) ... [2021-11-07 01:39:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f5ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:00, skipping insertion in model container [2021-11-07 01:39:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:57" (2/3) ... [2021-11-07 01:39:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f5ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:00, skipping insertion in model container [2021-11-07 01:39:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:00" (3/3) ... [2021-11-07 01:39:00,593 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_2.i [2021-11-07 01:39:00,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:39:00,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:39:00,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:39:00,651 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=FINITE_AUTOMATA, 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 [2021-11-07 01:39:00,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:39:00,666 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) [2021-11-07 01:39:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:39:00,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:00,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:39:00,672 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-07 01:39:00,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:00,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330180361] [2021-11-07 01:39:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:00,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:00,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:00,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:39:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:39:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:01,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:01,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:01,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330180361] [2021-11-07 01:39:01,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330180361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:01,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:01,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:39:01,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108372633] [2021-11-07 01:39:01,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:39:01,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:01,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:39:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:39:01,542 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) [2021-11-07 01:39:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:01,552 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-07 01:39:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:39:01,553 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 [2021-11-07 01:39:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:01,560 INFO L225 Difference]: With dead ends: 19 [2021-11-07 01:39:01,560 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 01:39:01,562 INFO L786 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 [2021-11-07 01:39:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 01:39:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 01:39:01,581 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) [2021-11-07 01:39:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-07 01:39:01,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-07 01:39:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:01,583 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-07 01:39:01,584 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) [2021-11-07 01:39:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-07 01:39:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:39:01,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:01,585 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:39:01,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:01,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:01,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-07 01:39:01,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:01,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683641325] [2021-11-07 01:39:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:01,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:01,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:01,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e880955e-50c5-4deb-9ba9-d7c61d30bcc8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process