./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:03,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:03,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:03,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:03,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:03,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:03,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:03,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:03,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:03,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:03,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:03,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:03,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:03,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:03,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:03,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:03,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:03,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:03,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:03,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:03,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:03,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:03,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:03,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:03,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:03,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:03,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:03,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:03,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:03,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:03,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:03,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:03,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:03,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:03,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:03,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:03,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:03,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:03,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:03,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:03,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:03,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:45:03,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:03,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:03,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:03,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:03,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:03,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:03,889 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:03,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:03,890 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:03,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:03,891 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:03,891 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:03,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:03,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:03,892 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:03,892 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:03,892 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:03,892 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:03,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:03,893 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:03,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:03,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:03,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:03,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:45:03,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:03,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:45:03,896 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:03,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:45:03,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:03,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:45:03,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:03,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:03,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:03,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:03,898 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:03,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:03,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:45:03,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:03,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:03,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:45:03,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:03,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-11-03 01:45:04,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:04,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:04,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:04,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:04,219 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:04,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-11-03 01:45:04,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/62fb5e251/88fae6167a6e42c591ddaad28f1bd875/FLAG80e1c33cb [2022-11-03 01:45:04,743 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:04,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-11-03 01:45:04,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/62fb5e251/88fae6167a6e42c591ddaad28f1bd875/FLAG80e1c33cb [2022-11-03 01:45:05,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/62fb5e251/88fae6167a6e42c591ddaad28f1bd875 [2022-11-03 01:45:05,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:05,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:05,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:05,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:05,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:05,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3370d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05, skipping insertion in model container [2022-11-03 01:45:05,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:05,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:05,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-11-03 01:45:05,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:05,360 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:05,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-11-03 01:45:05,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:05,391 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:05,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05 WrapperNode [2022-11-03 01:45:05,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:05,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:05,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:05,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:05,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,431 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-03 01:45:05,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:05,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:05,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:05,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:05,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:05,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:05,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:05,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:05,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:05,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:05,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:05,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:05,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:05,788 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:05,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:05,832 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:45:05,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:05 BoogieIcfgContainer [2022-11-03 01:45:05,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:05,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:05,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:05,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:05,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:05" (1/3) ... [2022-11-03 01:45:05,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbf13ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:05, skipping insertion in model container [2022-11-03 01:45:05,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (2/3) ... [2022-11-03 01:45:05,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbf13ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:05, skipping insertion in model container [2022-11-03 01:45:05,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:05" (3/3) ... [2022-11-03 01:45:05,853 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-11-03 01:45:05,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:05,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:45:05,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:05,933 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a7fa25e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:05,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:45:05,938 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) [2022-11-03 01:45:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:45:05,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:05,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:45:05,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash 67880, now seen corresponding path program 1 times [2022-11-03 01:45:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441358226] [2022-11-03 01:45:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:05,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:45:06,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:45:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:45:06,247 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:45:06,250 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:45:06,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:45:06,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:45:06,258 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:45:06,274 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:45:06,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:45:06 BoogieIcfgContainer [2022-11-03 01:45:06,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:45:06,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:45:06,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:45:06,309 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:45:06,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:05" (3/4) ... [2022-11-03 01:45:06,313 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:45:06,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:45:06,314 INFO L158 Benchmark]: Toolchain (without parser) took 1185.01ms. Allocated memory is still 102.8MB. Free memory was 65.0MB in the beginning and 51.0MB in the end (delta: 14.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,315 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 81.0MB in the beginning and 81.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:45:06,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.77ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 79.4MB in the end (delta: -14.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.32ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 77.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,318 INFO L158 Benchmark]: Boogie Preprocessor took 49.20ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,319 INFO L158 Benchmark]: RCFGBuilder took 360.12ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 66.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,319 INFO L158 Benchmark]: TraceAbstraction took 460.65ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 51.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 01:45:06,320 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 102.8MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 277.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:45:06,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 81.0MB in the beginning and 81.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.77ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 79.4MB in the end (delta: -14.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.32ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 77.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.20ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.12ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 66.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 460.65ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 51.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 102.8MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 277.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L25] CALL assume_abort_if_not(I >= 1. && I <= 3.) [L14] COND FALSE !(!cond) [L25] RET assume_abort_if_not(I >= 1. && I <= 3.) [L27] COND FALSE !(I >= 2.) [L28] S = 1.+(I-1.) * (.5+(I-1.) * (-.125+(I-1.)*.0625)) [L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] [L16] reach_error() VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:45:06,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:08,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:08,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:08,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:08,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:08,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:08,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:08,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:08,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:08,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:08,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:08,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:08,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:08,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:08,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:08,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:08,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:08,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:08,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:08,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:08,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:08,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:08,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:08,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:08,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:08,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:08,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:08,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:08,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:08,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:08,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:08,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:08,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:08,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:08,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:08,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:08,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:08,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:08,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:08,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:08,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:08,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 01:45:08,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:08,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:08,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:08,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:08,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:08,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:08,950 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:08,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:08,951 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:08,951 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:08,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:08,953 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:08,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:08,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:08,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:08,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:08,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:45:08,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:08,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:45:08,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:45:08,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:45:08,956 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:45:08,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:08,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:45:08,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:08,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:45:08,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:08,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:45:08,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:08,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:08,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:08,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:08,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:45:08,960 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:45:08,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:45:08,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:45:08,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:08,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:45:08,961 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_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-11-03 01:45:09,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:09,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:09,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:09,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:09,425 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:09,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-11-03 01:45:09,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/f15f9883a/059335b167b8440ba538e3b080d885b5/FLAG4a764a447 [2022-11-03 01:45:10,124 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:10,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-11-03 01:45:10,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/f15f9883a/059335b167b8440ba538e3b080d885b5/FLAG4a764a447 [2022-11-03 01:45:10,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/data/f15f9883a/059335b167b8440ba538e3b080d885b5 [2022-11-03 01:45:10,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:10,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:10,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:10,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:10,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:10,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5b4c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10, skipping insertion in model container [2022-11-03 01:45:10,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:10,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:10,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-11-03 01:45:10,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:10,724 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:10,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-11-03 01:45:10,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:10,792 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:10,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10 WrapperNode [2022-11-03 01:45:10,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:10,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:10,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:10,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:10,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,830 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-11-03 01:45:10,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:10,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:10,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:10,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:10,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:10,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:10,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:10,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:10,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:10,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:10,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 01:45:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:11,018 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:11,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:15,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:15,488 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:15,488 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:45:15,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:15 BoogieIcfgContainer [2022-11-03 01:45:15,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:15,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:15,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:15,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:15,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:10" (1/3) ... [2022-11-03 01:45:15,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454cdca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:15, skipping insertion in model container [2022-11-03 01:45:15,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10" (2/3) ... [2022-11-03 01:45:15,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454cdca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:15, skipping insertion in model container [2022-11-03 01:45:15,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:15" (3/3) ... [2022-11-03 01:45:15,499 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-11-03 01:45:15,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:15,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:45:15,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:15,587 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@618104ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:15,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:45:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-03 01:45:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:45:15,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-11-03 01:45:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:15,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502414003] [2022-11-03 01:45:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:15,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:15,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:45:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:45:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:16,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:16,795 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:16,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502414003] [2022-11-03 01:45:16,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502414003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:16,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:16,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583415173] [2022-11-03 01:45:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:45:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:16,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:45:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:45:16,840 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4.0) internal successors, (8), 2 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) [2022-11-03 01:45:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:16,855 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-03 01:45:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:45:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2022-11-03 01:45:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:16,866 INFO L225 Difference]: With dead ends: 23 [2022-11-03 01:45:16,867 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 01:45:16,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:45:16,875 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:16,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 01:45:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-03 01:45:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-03 01:45:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-03 01:45:16,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-11-03 01:45:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:16,912 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-03 01:45:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-03 01:45:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-03 01:45:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:45:16,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:16,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:16,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:17,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:17,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-11-03 01:45:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:17,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911374510] [2022-11-03 01:45:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:17,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:17,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:17,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:17,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:45:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:19,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:45:19,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:35,729 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (= |c_ULTIMATE.start_main_~S~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 01:46:29,963 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (or (and (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse4)))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.geq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse7 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse7 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse7)))))) .cse3))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse8 (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse9 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse9 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse9)))))))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (fp.geq .cse8 .cse3) (fp.leq .cse8 .cse0)))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2022-11-03 01:47:02,396 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse4)))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.geq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse7 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse7 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse7)))))) .cse3)))))) is different from false [2022-11-03 01:47:04,493 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse4)))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| .cse1) (not (fp.geq (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (let ((.cse7 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse3))) (fp.mul roundNearestTiesToEven .cse7 (fp.sub roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse6 .cse7)))))) .cse3)))))) is different from true [2022-11-03 01:47:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:04,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:04,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911374510] [2022-11-03 01:47:04,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911374510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:04,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:04,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:47:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217107083] [2022-11-03 01:47:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=13, Unknown=4, NotChecked=24, Total=56 [2022-11-03 01:47:04,498 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 01:47:07,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:09,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:09,785 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-11-03 01:47:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:47:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) Word has length 8 [2022-11-03 01:47:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:09,911 INFO L225 Difference]: With dead ends: 13 [2022-11-03 01:47:09,911 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 01:47:09,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-11-03 01:47:09,913 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:09,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 14 Unchecked, 4.8s Time] [2022-11-03 01:47:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 01:47:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-03 01:47:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2022-11-03 01:47:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-11-03 01:47:09,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-11-03 01:47:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:09,918 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-11-03 01:47:09,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 01:47:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-11-03 01:47:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:47:09,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:09,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:09,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:10,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:47:10,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2022-11-03 01:47:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:10,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208762047] [2022-11-03 01:47:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:10,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:10,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:10,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:47:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:12,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:47:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:29,673 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_main_~S~0#1| (fp.add c_currentRoundingMode .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0)))))))))) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 01:48:23,316 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse5 (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)))) (.cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.add roundNearestTiesToEven .cse0 (let ((.cse3 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse3 .cse6))))))))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq .cse1 .cse2) (fp.geq .cse1 .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse2)))))) (and (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse2)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse7 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse7 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse7 (fp.add roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse7 .cse6))))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 (let ((.cse8 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse8 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse8 (fp.add roundNearestTiesToEven .cse5 (fp.mul roundNearestTiesToEven .cse8 .cse6))))))) .cse2)) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse2))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))))) is different from false [2022-11-03 01:48:55,976 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse4 (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse1)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse2 .cse5))))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 (let ((.cse6 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse6 .cse5))))))) .cse1)) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse1)))))) is different from false [2022-11-03 01:48:58,056 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0))) (.cse4 (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse1)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse2 .cse5))))))) .cse0)))) (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 (let ((.cse6 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven .cse4 (fp.mul roundNearestTiesToEven .cse6 .cse5))))))) .cse1)) (not (fp.geq |ULTIMATE.start_main_~I~0#1| .cse1)))))) is different from true [2022-11-03 01:48:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:58,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:48:58,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:48:58,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208762047] [2022-11-03 01:48:58,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208762047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:58,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:58,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:48:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408560049] [2022-11-03 01:48:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:48:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:48:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:48:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=13, Unknown=4, NotChecked=24, Total=56 [2022-11-03 01:48:58,059 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 01:49:00,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:00,877 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-11-03 01:49:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:49:00,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) Word has length 8 [2022-11-03 01:49:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:00,996 INFO L225 Difference]: With dead ends: 9 [2022-11-03 01:49:00,996 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:49:00,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-11-03 01:49:00,997 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:00,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 13 Unchecked, 2.4s Time] [2022-11-03 01:49:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:49:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:49:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-03 01:49:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:49:00,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-11-03 01:49:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:00,999 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:49:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 01:49:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:49:00,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:49:01,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:49:01,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:01,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:01,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:49:01,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:49:01,219 INFO L902 garLoopResultBuilder]: At program point L31(lines 20 32) the Hoare annotation is: true [2022-11-03 01:49:01,219 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 28) no Hoare annotation was computed. [2022-11-03 01:49:01,219 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 28) no Hoare annotation was computed. [2022-11-03 01:49:01,219 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 15) no Hoare annotation was computed. [2022-11-03 01:49:01,220 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 01:49:01,220 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 01:49:01,220 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 01:49:01,220 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-03 01:49:01,220 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-03 01:49:01,221 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-03 01:49:01,221 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2022-11-03 01:49:01,221 INFO L902 garLoopResultBuilder]: At program point L16-3(line 16) the Hoare annotation is: true [2022-11-03 01:49:01,224 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 01:49:01,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:49:01,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:49:01 BoogieIcfgContainer [2022-11-03 01:49:01,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:49:01,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:49:01,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:49:01,248 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:49:01,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:15" (3/4) ... [2022-11-03 01:49:01,251 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:49:01,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-03 01:49:01,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 01:49:01,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:49:01,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:49:01,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:49:01,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:49:01,304 INFO L158 Benchmark]: Toolchain (without parser) took 230799.15ms. Allocated memory is still 67.1MB. Free memory was 45.3MB in the beginning and 34.5MB in the end (delta: 10.9MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,304 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 50.3MB. Free memory is still 30.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:49:01,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.46ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 50.8MB in the end (delta: -5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.50ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:49:01,308 INFO L158 Benchmark]: Boogie Preprocessor took 25.66ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 47.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,309 INFO L158 Benchmark]: RCFGBuilder took 4632.56ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 38.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,309 INFO L158 Benchmark]: TraceAbstraction took 225749.29ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 37.0MB in the end (delta: 575.7kB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,310 INFO L158 Benchmark]: Witness Printer took 57.26ms. Allocated memory is still 67.1MB. Free memory was 37.0MB in the beginning and 34.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:49:01,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 50.3MB. Free memory is still 30.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.46ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 50.8MB in the end (delta: -5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.50ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.66ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 47.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4632.56ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 38.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 225749.29ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 37.0MB in the end (delta: 575.7kB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 57.26ms. Allocated memory is still 67.1MB. Free memory was 37.0MB in the beginning and 34.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 225.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 27 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 210.6s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 6 QuantifiedInterpolants, 1011 SizeOfPredicates, 15 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 01:49:01,550 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-03 01:49:01,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3c172d9-505a-4f7e-9d09-8c2c287d7df4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE