./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs --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 eb1826e8952b1eb941e064a85d9720fcb947ea7c ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs --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 eb1826e8952b1eb941e064a85d9720fcb947ea7c .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:18:54,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:18:54,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:18:54,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:18:54,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:18:54,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:18:54,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:18:54,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:18:54,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:18:54,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:18:54,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:18:54,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:18:54,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:18:54,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:18:54,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:18:54,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:18:54,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:18:54,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:18:54,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:18:54,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:18:54,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:18:54,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:18:54,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:18:54,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:18:54,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:18:54,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:18:54,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:18:54,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:18:54,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:18:54,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:18:54,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:18:54,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:18:54,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:18:54,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:18:54,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:18:54,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:18:54,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:18:54,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:18:54,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:18:54,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:18:54,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:18:54,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:18:54,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:18:54,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:18:54,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:18:54,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:18:54,456 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:18:54,456 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:18:54,456 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:18:54,457 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:18:54,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:18:54,458 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:18:54,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:18:54,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:18:54,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:18:54,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:18:54,460 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:18:54,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:18:54,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:18:54,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:18:54,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:18:54,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:18:54,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:54,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:18:54,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:18:54,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:18:54,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:18:54,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:18:54,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:18:54,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:18:54,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:18:54,463 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1826e8952b1eb941e064a85d9720fcb947ea7c [2021-10-16 03:18:54,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:18:54,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:18:54,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:18:54,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:18:54,745 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:18:54,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-16 03:18:54,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/c4daaf0f2/53b729b155e143ce994bd441d36abbbe/FLAG01860447d [2021-10-16 03:18:55,238 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:18:55,239 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-16 03:18:55,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/c4daaf0f2/53b729b155e143ce994bd441d36abbbe/FLAG01860447d [2021-10-16 03:18:55,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/c4daaf0f2/53b729b155e143ce994bd441d36abbbe [2021-10-16 03:18:55,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:18:55,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:18:55,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:55,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:18:55,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:18:55,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea9bd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55, skipping insertion in model container [2021-10-16 03:18:55,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:18:55,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:18:55,871 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-16 03:18:55,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:55,882 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:18:55,898 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-16 03:18:55,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:55,912 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:18:55,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55 WrapperNode [2021-10-16 03:18:55,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:55,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:55,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:18:55,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:18:55,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:55,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:18:55,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:18:55,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:18:55,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:18:55,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:18:55,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:18:55,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:18:55,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (1/1) ... [2021-10-16 03:18:55,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:55,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:18:56,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:18:56,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:18:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:18:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:18:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:18:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:18:56,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:18:56,339 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 03:18:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:56 BoogieIcfgContainer [2021-10-16 03:18:56,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:18:56,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:18:56,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:18:56,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:18:56,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:18:55" (1/3) ... [2021-10-16 03:18:56,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:56, skipping insertion in model container [2021-10-16 03:18:56,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:55" (2/3) ... [2021-10-16 03:18:56,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:56, skipping insertion in model container [2021-10-16 03:18:56,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:56" (3/3) ... [2021-10-16 03:18:56,357 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-16 03:18:56,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:18:56,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:18:56,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:18:56,470 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, mConcurrency=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 [2021-10-16 03:18:56,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:18:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 03:18:56,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:56,492 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 03:18:56,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-10-16 03:18:56,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:18:56,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522235586] [2021-10-16 03:18:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:56,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:18:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:18:56,659 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:18:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:18:56,721 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:18:56,724 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:18:56,725 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:18:56,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:18:56,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:18:56,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:18:56 BoogieIcfgContainer [2021-10-16 03:18:56,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:18:56,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:18:56,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:18:56,749 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:18:56,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:56" (3/4) ... [2021-10-16 03:18:56,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:18:56,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:18:56,754 INFO L168 Benchmark]: Toolchain (without parser) took 1084.47 ms. Allocated memory is still 113.2 MB. Free memory was 77.0 MB in the beginning and 62.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:56,755 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory is still 93.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:18:56,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.28 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 89.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:56,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.84 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 88.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:56,757 INFO L168 Benchmark]: Boogie Preprocessor took 18.51 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 87.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:18:56,758 INFO L168 Benchmark]: RCFGBuilder took 375.67 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 76.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:56,758 INFO L168 Benchmark]: TraceAbstraction took 405.01 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 63.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:56,759 INFO L168 Benchmark]: Witness Printer took 4.13 ms. Allocated memory is still 113.2 MB. Free memory was 63.3 MB in the beginning and 62.9 MB in the end (delta: 337.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:18:56,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory is still 93.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.28 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 89.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.84 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 88.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.51 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 87.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.67 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 76.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 405.01 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 63.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.13 ms. Allocated memory is still 113.2 MB. Free memory was 63.3 MB in the beginning and 62.9 MB in the end (delta: 337.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 274.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.3ms SsaConstructionTime, 46.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 03:18:56,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:18:59,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:18:59,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:18:59,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:18:59,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:18:59,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:18:59,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:18:59,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:18:59,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:18:59,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:18:59,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:18:59,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:18:59,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:18:59,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:18:59,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:18:59,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:18:59,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:18:59,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:18:59,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:18:59,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:18:59,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:18:59,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:18:59,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:18:59,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:18:59,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:18:59,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:18:59,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:18:59,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:18:59,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:18:59,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:18:59,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:18:59,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:18:59,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:18:59,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:18:59,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:18:59,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:18:59,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:18:59,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:18:59,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:18:59,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:18:59,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:18:59,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:18:59,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:18:59,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:18:59,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:18:59,379 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:18:59,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:18:59,379 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:18:59,380 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:18:59,380 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:18:59,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:18:59,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:18:59,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:18:59,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:18:59,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:18:59,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:18:59,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:18:59,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:18:59,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:18:59,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:18:59,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:18:59,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:18:59,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:18:59,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:18:59,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:18:59,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:18:59,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:18:59,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:18:59,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:59,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:18:59,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:18:59,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:18:59,387 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:18:59,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:18:59,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:18:59,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:18:59,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:18:59,388 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1826e8952b1eb941e064a85d9720fcb947ea7c [2021-10-16 03:18:59,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:18:59,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:18:59,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:18:59,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:18:59,754 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:18:59,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-16 03:18:59,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/82a298f4b/f63179a8469146538c20f84e24bf1e6e/FLAGc88648529 [2021-10-16 03:19:00,372 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:19:00,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-16 03:19:00,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/82a298f4b/f63179a8469146538c20f84e24bf1e6e/FLAGc88648529 [2021-10-16 03:19:00,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/data/82a298f4b/f63179a8469146538c20f84e24bf1e6e [2021-10-16 03:19:00,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:19:00,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:19:00,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:00,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:19:00,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:19:00,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:00" (1/1) ... [2021-10-16 03:19:00,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebab05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:00, skipping insertion in model container [2021-10-16 03:19:00,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:00" (1/1) ... [2021-10-16 03:19:00,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:19:00,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:19:01,008 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-16 03:19:01,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:01,034 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:19:01,055 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_8f666746-72a1-462a-a5c6-ea480a0c99b8/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-16 03:19:01,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:01,084 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:19:01,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01 WrapperNode [2021-10-16 03:19:01,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:01,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:01,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:19:01,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:19:01,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:01,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:19:01,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:19:01,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:19:01,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:19:01,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:19:01,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:19:01,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:19:01,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (1/1) ... [2021-10-16 03:19:01,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:19:01,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:01,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:19:01,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:19:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:19:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:19:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:19:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:19:03,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:19:03,597 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 03:19:03,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:03 BoogieIcfgContainer [2021-10-16 03:19:03,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:19:03,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:19:03,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:19:03,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:19:03,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:19:00" (1/3) ... [2021-10-16 03:19:03,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fec55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:03, skipping insertion in model container [2021-10-16 03:19:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:01" (2/3) ... [2021-10-16 03:19:03,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fec55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:03, skipping insertion in model container [2021-10-16 03:19:03,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:03" (3/3) ... [2021-10-16 03:19:03,607 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-16 03:19:03,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:19:03,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:19:03,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:19:03,666 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, mConcurrency=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 [2021-10-16 03:19:03,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:19:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:19:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:19:03,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:03,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:19:03,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:19:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-16 03:19:03,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:19:03,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2957691] [2021-10-16 03:19:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:03,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:19:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:19:03,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:19:03,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:19:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:19:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:04,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:04,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:19:04,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2957691] [2021-10-16 03:19:04,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2957691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:04,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:04,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:19:04,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005341985] [2021-10-16 03:19:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:19:04,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:19:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:19:04,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:19:04,530 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:19:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:04,543 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-16 03:19:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:19:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:19:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:04,552 INFO L225 Difference]: With dead ends: 19 [2021-10-16 03:19:04,553 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 03:19:04,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:19:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 03:19:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 03:19:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:19:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-16 03:19:04,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-16 03:19:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:04,577 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-16 03:19:04,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:19:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-16 03:19:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:19:04,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:04,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:19:04,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:19:04,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:19:04,779 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:19:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:04,780 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-16 03:19:04,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:19:04,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63233872] [2021-10-16 03:19:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:04,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:19:04,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:19:04,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:19:04,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:19:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:19:16,268 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:19:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:19:18,965 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 03:19:18,965 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:19:18,967 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:19:19,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:19,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:19:19,175 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:19:19,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:19:19 BoogieIcfgContainer [2021-10-16 03:19:19,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:19:19,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:19:19,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:19:19,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:19:19,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:03" (3/4) ... [2021-10-16 03:19:19,221 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:19:19,260 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:19:19,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:19:19,262 INFO L168 Benchmark]: Toolchain (without parser) took 18420.37 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 41.0 MB in the beginning and 59.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:19,263 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:19:19,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.91 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 30.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:19,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.40 ms. Allocated memory is still 60.8 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:19,265 INFO L168 Benchmark]: Boogie Preprocessor took 44.26 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:19:19,266 INFO L168 Benchmark]: RCFGBuilder took 2413.31 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 40.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:19,267 INFO L168 Benchmark]: TraceAbstraction took 15613.12 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 60.8 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:19:19,267 INFO L168 Benchmark]: Witness Printer took 44.24 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:19,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.91 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 30.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.40 ms. Allocated memory is still 60.8 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.26 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2413.31 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 40.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15613.12 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 60.8 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 44.24 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.6 MB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15517.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 40.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.4ms SsaConstructionTime, 12043.7ms SatisfiabilityAnalysisTime, 117.0ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 03:19:19,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f666746-72a1-462a-a5c6-ea480a0c99b8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...