./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH --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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:22:07,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:22:07,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:22:07,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:22:07,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:22:07,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:22:07,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:22:07,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:22:07,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:22:07,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:22:07,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:22:07,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:22:07,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:22:07,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:22:07,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:22:07,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:22:07,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:22:07,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:22:07,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:22:07,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:22:07,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:22:07,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:22:07,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:22:07,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:22:07,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:22:07,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:22:07,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:22:07,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:22:07,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:22:07,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:22:07,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:22:07,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:22:07,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:22:07,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:22:07,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:22:07,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:22:07,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:22:07,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:22:07,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:22:07,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:22:07,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:22:07,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:22:07,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:22:07,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:22:07,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:22:07,176 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:22:07,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:22:07,176 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:22:07,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:22:07,177 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:22:07,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:22:07,177 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:22:07,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:22:07,178 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:22:07,178 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:22:07,178 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:22:07,179 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:22:07,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:22:07,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:22:07,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:22:07,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:22:07,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:22:07,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:22:07,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:22:07,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:22:07,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:22:07,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:22:07,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:22:07,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:22:07,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:22:07,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:22:07,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:22:07,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:22:07,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:22:07,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:22:07,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:22:07,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:22:07,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:22:07,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:22:07,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:22:07,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:22:07,186 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-03 05:22:07,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:22:07,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:22:07,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:22:07,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:22:07,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:22:07,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-03 05:22:07,607 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/17f2065b5/1873dc0c673a47ce9adcef93dc369b25/FLAG4743c2fd6 [2021-11-03 05:22:08,124 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:22:08,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-03 05:22:08,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/17f2065b5/1873dc0c673a47ce9adcef93dc369b25/FLAG4743c2fd6 [2021-11-03 05:22:08,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/17f2065b5/1873dc0c673a47ce9adcef93dc369b25 [2021-11-03 05:22:08,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:22:08,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:22:08,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:22:08,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:22:08,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:22:08,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5687076c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08, skipping insertion in model container [2021-11-03 05:22:08,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:22:08,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:22:08,706 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-03 05:22:08,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:22:08,735 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:22:08,748 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-03 05:22:08,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:22:08,766 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:22:08,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08 WrapperNode [2021-11-03 05:22:08,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:22:08,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:22:08,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:22:08,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:22:08,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:22:08,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:22:08,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:22:08,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:22:08,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:22:08,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:22:08,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:22:08,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:22:08,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (1/1) ... [2021-11-03 05:22:08,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:22:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:22:08,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:22:08,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:22:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:22:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:22:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:22:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:22:09,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:22:09,340 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-03 05:22:09,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:09 BoogieIcfgContainer [2021-11-03 05:22:09,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:22:09,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:22:09,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:22:09,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:22:09,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:22:08" (1/3) ... [2021-11-03 05:22:09,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703501d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:09, skipping insertion in model container [2021-11-03 05:22:09,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:08" (2/3) ... [2021-11-03 05:22:09,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703501d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:09, skipping insertion in model container [2021-11-03 05:22:09,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:09" (3/3) ... [2021-11-03 05:22:09,352 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-03 05:22:09,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:22:09,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:22:09,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:22:09,422 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 [2021-11-03 05:22:09,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:22:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 05:22:09,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:09,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 05:22:09,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2691089, now seen corresponding path program 1 times [2021-11-03 05:22:09,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:09,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142000384] [2021-11-03 05:22:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:09,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:22:09,597 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:22:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:22:09,703 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:22:09,717 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:22:09,718 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:22:09,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:22:09,729 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 05:22:09,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:22:09,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:22:09 BoogieIcfgContainer [2021-11-03 05:22:09,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:22:09,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:22:09,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:22:09,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:22:09,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:09" (3/4) ... [2021-11-03 05:22:09,772 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:22:09,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:22:09,774 INFO L168 Benchmark]: Toolchain (without parser) took 1299.91 ms. Allocated memory is still 109.1 MB. Free memory was 69.4 MB in the beginning and 52.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,779 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 85.6 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:22:09,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.05 ms. Allocated memory is still 109.1 MB. Free memory was 69.2 MB in the beginning and 84.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,784 INFO L168 Benchmark]: Boogie Preprocessor took 43.95 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 81.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:22:09,785 INFO L168 Benchmark]: RCFGBuilder took 487.53 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 67.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,787 INFO L168 Benchmark]: TraceAbstraction took 406.07 ms. Allocated memory is still 109.1 MB. Free memory was 66.8 MB in the beginning and 52.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,789 INFO L168 Benchmark]: Witness Printer took 20.67 ms. Allocated memory is still 109.1 MB. Free memory was 52.6 MB in the beginning and 52.1 MB in the end (delta: 435.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:22:09,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 85.6 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.05 ms. Allocated memory is still 109.1 MB. Free memory was 69.2 MB in the beginning and 84.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.95 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 81.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 487.53 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 67.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 406.07 ms. Allocated memory is still 109.1 MB. Free memory was 66.8 MB in the beginning and 52.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 20.67 ms. Allocated memory is still 109.1 MB. Free memory was 52.6 MB in the beginning and 52.1 MB in the end (delta: 435.5 kB). Peak memory consumption was 2.1 MB. 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: 10]: 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 23, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 28. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L10] COND TRUE !(cond) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 [2021-11-03 05:22:09,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/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 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH --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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:22:12,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:22:12,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:22:12,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:22:12,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:22:12,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:22:12,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:22:12,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:22:12,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:22:12,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:22:12,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:22:12,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:22:12,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:22:12,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:22:12,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:22:12,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:22:12,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:22:12,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:22:12,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:22:12,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:22:12,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:22:12,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:22:12,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:22:12,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:22:12,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:22:12,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:22:12,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:22:12,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:22:12,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:22:12,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:22:12,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:22:12,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:22:12,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:22:12,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:22:12,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:22:12,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:22:12,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:22:12,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:22:12,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:22:12,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:22:12,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:22:12,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:22:12,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:22:12,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:22:12,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:22:12,841 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:22:12,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:22:12,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:22:12,842 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:22:12,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:22:12,842 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:22:12,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:22:12,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:22:12,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:22:12,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:22:12,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:22:12,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:22:12,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:22:12,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:22:12,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:22:12,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:22:12,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:22:12,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:22:12,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:22:12,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:22:12,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:22:12,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:22:12,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:22:12,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:22:12,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:22:12,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:22:12,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:22:12,851 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:22:12,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:22:12,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:22:12,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:22:12,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:22:12,853 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-03 05:22:13,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:22:13,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:22:13,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:22:13,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:22:13,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:22:13,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-03 05:22:13,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/937ceb5db/f5439442a84748cf826e8a81005b5170/FLAGae23bc3f6 [2021-11-03 05:22:13,992 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:22:13,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-03 05:22:14,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/937ceb5db/f5439442a84748cf826e8a81005b5170/FLAGae23bc3f6 [2021-11-03 05:22:14,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/data/937ceb5db/f5439442a84748cf826e8a81005b5170 [2021-11-03 05:22:14,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:22:14,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:22:14,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:22:14,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:22:14,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:22:14,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50adaf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14, skipping insertion in model container [2021-11-03 05:22:14,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:22:14,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:22:14,616 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-03 05:22:14,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:22:14,695 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:22:14,737 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_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-03 05:22:14,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:22:14,764 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:22:14,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14 WrapperNode [2021-11-03 05:22:14,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:22:14,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:22:14,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:22:14,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:22:14,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:22:14,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:22:14,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:22:14,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:22:14,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:22:14,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:22:14,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:22:14,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:22:14,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (1/1) ... [2021-11-03 05:22:14,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:22:14,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:22:14,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:22:14,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:22:14,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:22:14,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:22:14,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:22:14,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:22:15,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:22:15,360 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-03 05:22:15,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:15 BoogieIcfgContainer [2021-11-03 05:22:15,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:22:15,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:22:15,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:22:15,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:22:15,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:22:14" (1/3) ... [2021-11-03 05:22:15,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313c707d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:15, skipping insertion in model container [2021-11-03 05:22:15,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:22:14" (2/3) ... [2021-11-03 05:22:15,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313c707d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:15, skipping insertion in model container [2021-11-03 05:22:15,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:15" (3/3) ... [2021-11-03 05:22:15,392 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-03 05:22:15,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:22:15,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:22:15,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:22:15,460 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 [2021-11-03 05:22:15,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:22:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-11-03 05:22:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:22:15,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:15,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:15,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:15,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1473640742, now seen corresponding path program 1 times [2021-11-03 05:22:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:15,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144014043] [2021-11-03 05:22:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:15,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:15,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:15,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:22:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:15,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:22:15,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:15,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:15,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:15,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144014043] [2021-11-03 05:22:15,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144014043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:15,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:15,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:22:15,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162968283] [2021-11-03 05:22:15,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:22:15,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:22:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:22:15,956 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-03 05:22:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:15,973 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-11-03 05:22:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:22:15,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 05:22:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:15,984 INFO L225 Difference]: With dead ends: 34 [2021-11-03 05:22:15,985 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 05:22:15,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:22:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 05:22:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 05:22:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-03 05:22:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-03 05:22:16,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2021-11-03 05:22:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:16,025 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-03 05:22:16,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-03 05:22:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-03 05:22:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:22:16,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:16,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:16,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:16,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:16,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2069238230, now seen corresponding path program 1 times [2021-11-03 05:22:16,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:16,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340763915] [2021-11-03 05:22:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:16,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:16,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:16,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:22:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:16,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:22:16,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:17,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:30,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:30,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340763915] [2021-11-03 05:22:30,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340763915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:30,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:30,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-03 05:22:30,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356837100] [2021-11-03 05:22:30,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 05:22:30,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 05:22:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:22:30,595 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-03 05:23:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:36,833 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-11-03 05:23:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:23:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 05:23:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:36,841 INFO L225 Difference]: With dead ends: 64 [2021-11-03 05:23:36,841 INFO L226 Difference]: Without dead ends: 62 [2021-11-03 05:23:36,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=279, Invalid=842, Unknown=1, NotChecked=0, Total=1122 [2021-11-03 05:23:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-03 05:23:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 32. [2021-11-03 05:23:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-11-03 05:23:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-03 05:23:36,854 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2021-11-03 05:23:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:36,855 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-03 05:23:36,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-03 05:23:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-03 05:23:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:23:36,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:36,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:36,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:37,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:23:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -276339754, now seen corresponding path program 1 times [2021-11-03 05:23:37,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:23:37,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799671292] [2021-11-03 05:23:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:37,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:23:37,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:23:37,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:23:37,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:23:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:37,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:23:37,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:23:37,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:23:37,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:37,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799671292] [2021-11-03 05:23:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799671292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:37,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:37,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 05:23:37,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095506135] [2021-11-03 05:23:37,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:23:37,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:23:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:23:37,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:23:37,761 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-11-03 05:23:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:39,846 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-11-03 05:23:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:23:39,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:23:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:39,848 INFO L225 Difference]: With dead ends: 47 [2021-11-03 05:23:39,849 INFO L226 Difference]: Without dead ends: 45 [2021-11-03 05:23:39,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:23:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-03 05:23:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-11-03 05:23:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-11-03 05:23:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-03 05:23:39,859 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2021-11-03 05:23:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:39,859 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-03 05:23:39,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-11-03 05:23:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-03 05:23:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 05:23:39,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:39,861 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:39,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:40,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:40,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:23:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2127915917, now seen corresponding path program 1 times [2021-11-03 05:23:40,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:23:40,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071882878] [2021-11-03 05:23:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:40,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:23:40,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:23:40,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:23:40,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:23:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 05:23:40,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:41,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:41,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071882878] [2021-11-03 05:23:41,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~D~0] [2021-11-03 05:23:41,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723173580] [2021-11-03 05:23:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:41,248 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:23:41,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:23:41,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:23:41,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-03 05:23:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:42,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:23:42,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:42,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~D~0] [2021-11-03 05:23:42,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676450600] [2021-11-03 05:23:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:42,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:23:42,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:23:42,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:23:42,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 05:23:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:44,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:23:44,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:45,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~D~0] [2021-11-03 05:23:45,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:45,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:23:45,579 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:23:45,580 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:23:45,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:23:45,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 05:23:45,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:46,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:46,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:23:46,211 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-03 05:23:46,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:23:46,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:23:46 BoogieIcfgContainer [2021-11-03 05:23:46,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:23:46,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:23:46,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:23:46,228 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:23:46,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:15" (3/4) ... [2021-11-03 05:23:46,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:23:46,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:23:46,234 INFO L168 Benchmark]: Toolchain (without parser) took 91860.95 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 50.9 MB in the beginning and 51.8 MB in the end (delta: -823.2 kB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:46,235 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:46,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.46 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 51.0 MB in the end (delta: -368.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:46,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:46,237 INFO L168 Benchmark]: Boogie Preprocessor took 66.14 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 48.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:46,237 INFO L168 Benchmark]: RCFGBuilder took 466.17 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 38.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:46,238 INFO L168 Benchmark]: TraceAbstraction took 90861.88 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 51.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:46,239 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 86.0 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:46,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.46 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 51.0 MB in the end (delta: -368.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.14 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 48.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 466.17 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 38.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 90861.88 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 51.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 86.0 MB. Free memory is still 51.8 MB. 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: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L10] COND FALSE !(!(cond)) [L19] i++ [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND FALSE !(R <= -D) [L30] COND TRUE R >= D [L30] Y = S + D [L10] COND TRUE !(cond) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 90.7s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 68.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 179 SDslu, 80 SDs, 0 SdLazy, 269 SolverSat, 56 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 26.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 49.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 42, 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, 3 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 4 QuantifiedInterpolants, 520 SizeOfPredicates, 15 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-11-03 05:23:46,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68eebd7a-2d7c-4284-8692-f3a3d4480c8a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN