./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8 --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 9359a1ca6617de6131ac944004153af0ea740bb1 ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8 --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 9359a1ca6617de6131ac944004153af0ea740bb1 ............................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:25:35,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:35,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:35,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:35,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:35,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:35,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:35,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:35,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:35,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:35,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:35,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:35,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:35,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:35,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:35,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:35,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:35,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:35,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:35,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:35,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:35,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:35,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:35,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:35,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:35,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:35,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:35,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:35,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:35,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:35,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:35,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:35,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:35,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:35,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:35,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:35,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:35,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:35,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:35,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:35,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:35,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:25:35,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:35,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:35,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:35,157 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:35,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:35,157 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:35,157 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:25:35,158 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:35,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:35,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:25:35,166 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:25:35,166 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:35,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:25:35,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:25:35,167 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:25:35,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:35,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:35,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:25:35,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:35,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:35,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:35,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:35,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:35,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:35,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:35,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:35,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:35,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:35,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:35,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:35,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:35,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:35,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:35,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:35,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:25:35,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:25:35,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:35,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:35,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:35,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9359a1ca6617de6131ac944004153af0ea740bb1 [2021-10-13 07:25:35,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:35,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:35,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:35,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:35,473 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:35,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-13 07:25:35,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/9253fd692/2555d52f21044f5ca8396b3f7aed9041/FLAG29eaa2192 [2021-10-13 07:25:35,987 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:35,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-13 07:25:35,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/9253fd692/2555d52f21044f5ca8396b3f7aed9041/FLAG29eaa2192 [2021-10-13 07:25:36,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/9253fd692/2555d52f21044f5ca8396b3f7aed9041 [2021-10-13 07:25:36,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:36,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:36,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:36,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:36,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:36,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34724902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36, skipping insertion in model container [2021-10-13 07:25:36,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:36,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:36,584 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-13 07:25:36,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:36,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:36,640 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-13 07:25:36,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:36,658 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:36,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36 WrapperNode [2021-10-13 07:25:36,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:36,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:36,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:36,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:36,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:36,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:36,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:36,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:36,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:36,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:36,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:36,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:36,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (1/1) ... [2021-10-13 07:25:36,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:36,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:36,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:36,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:25:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:37,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:37,165 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:25:37,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:37 BoogieIcfgContainer [2021-10-13 07:25:37,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:37,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:37,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:37,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:37,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:36" (1/3) ... [2021-10-13 07:25:37,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0fc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:37, skipping insertion in model container [2021-10-13 07:25:37,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:36" (2/3) ... [2021-10-13 07:25:37,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0fc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:37, skipping insertion in model container [2021-10-13 07:25:37,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:37" (3/3) ... [2021-10-13 07:25:37,195 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-13 07:25:37,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:37,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:37,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:37,251 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:25:37,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:25:37,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:37,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:25:37,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:37,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:37,278 INFO L82 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-10-13 07:25:37,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:37,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316010687] [2021-10-13 07:25:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:37,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:25:37,402 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:25:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:25:37,442 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:25:37,445 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:25:37,446 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:37,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:25:37,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:25:37,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:25:37 BoogieIcfgContainer [2021-10-13 07:25:37,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:25:37,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:25:37,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:25:37,475 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:25:37,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:37" (3/4) ... [2021-10-13 07:25:37,480 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:25:37,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:25:37,482 INFO L168 Benchmark]: Toolchain (without parser) took 1095.97 ms. Allocated memory is still 107.0 MB. Free memory was 73.9 MB in the beginning and 56.3 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:37,483 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:37,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.47 ms. Allocated memory is still 107.0 MB. Free memory was 73.7 MB in the beginning and 82.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:37,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:37,485 INFO L168 Benchmark]: Boogie Preprocessor took 45.98 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.6 MB in the end (delta: 790.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:37,486 INFO L168 Benchmark]: RCFGBuilder took 421.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 69.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:37,487 INFO L168 Benchmark]: TraceAbstraction took 289.01 ms. Allocated memory is still 107.0 MB. Free memory was 69.6 MB in the beginning and 56.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:37,488 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 107.0 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:37,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.47 ms. Allocated memory is still 107.0 MB. Free memory was 73.7 MB in the beginning and 82.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.98 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.6 MB in the end (delta: 790.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 421.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 69.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 289.01 ms. Allocated memory is still 107.0 MB. Free memory was 69.6 MB in the beginning and 56.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 107.0 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.5f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 211.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.9ms SsaConstructionTime, 41.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:25:37,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:25:40,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:40,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:40,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:40,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:40,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:40,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:40,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:40,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:40,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:40,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:40,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:40,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:40,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:40,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:40,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:40,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:40,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:40,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:40,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:40,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:40,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:40,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:40,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:40,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:40,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:40,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:40,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:40,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:40,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:40,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:40,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:40,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:40,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:40,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:40,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:40,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:40,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:40,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:40,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:40,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:40,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:25:40,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:40,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:40,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:40,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:40,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:40,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:40,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:40,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:40,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:40,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:40,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:40,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:40,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:40,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:40,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:40,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:40,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:40,352 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:25:40,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:25:40,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:40,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:40,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:40,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:40,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:40,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:25:40,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:40,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:40,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:40,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:40,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:40,355 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:25:40,355 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:40,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:40,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:40,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:40,357 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_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9359a1ca6617de6131ac944004153af0ea740bb1 [2021-10-13 07:25:40,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:40,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:40,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:40,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:40,846 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:40,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-13 07:25:40,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/6523607c0/11818c490bf1464f9debe98abde6dc17/FLAGed9854ddb [2021-10-13 07:25:41,465 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:41,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-13 07:25:41,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/6523607c0/11818c490bf1464f9debe98abde6dc17/FLAGed9854ddb [2021-10-13 07:25:41,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/data/6523607c0/11818c490bf1464f9debe98abde6dc17 [2021-10-13 07:25:41,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:41,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:41,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:41,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:41,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:41,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:41" (1/1) ... [2021-10-13 07:25:41,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400a4a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:41, skipping insertion in model container [2021-10-13 07:25:41,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:41" (1/1) ... [2021-10-13 07:25:41,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:42,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-13 07:25:42,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:42,088 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:42,106 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-13 07:25:42,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:42,146 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:42,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42 WrapperNode [2021-10-13 07:25:42,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:42,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:42,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:42,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:42,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:42,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:42,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:42,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:42,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:42,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:42,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:42,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:42,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (1/1) ... [2021-10-13 07:25:42,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:42,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:42,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:42,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:42,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:44,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:44,760 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:25:44,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:44 BoogieIcfgContainer [2021-10-13 07:25:44,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:44,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:44,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:44,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:44,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:41" (1/3) ... [2021-10-13 07:25:44,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcda75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:44, skipping insertion in model container [2021-10-13 07:25:44,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:42" (2/3) ... [2021-10-13 07:25:44,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcda75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:44, skipping insertion in model container [2021-10-13 07:25:44,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:44" (3/3) ... [2021-10-13 07:25:44,771 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-13 07:25:44,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:44,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:44,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:44,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:25:44,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:25:44,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:44,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:25:44,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:44,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:44,859 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-13 07:25:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:44,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317104974] [2021-10-13 07:25:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:44,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:44,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:44,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:25:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:45,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:25:45,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:45,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:45,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:45,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317104974] [2021-10-13 07:25:45,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317104974] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:45,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:45,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:25:45,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931122773] [2021-10-13 07:25:45,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:25:45,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:25:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:45,865 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:45,876 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-13 07:25:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:25:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:25:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:45,886 INFO L225 Difference]: With dead ends: 19 [2021-10-13 07:25:45,887 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 07:25:45,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 07:25:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 07:25:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-13 07:25:45,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-13 07:25:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:45,913 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-13 07:25:45,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-13 07:25:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:25:45,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:45,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:25:45,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:46,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:46,137 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:46,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:46,138 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-13 07:25:46,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:46,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26702880] [2021-10-13 07:25:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:46,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:46,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:46,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:26:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:26:47,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:02,602 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 07:27:52,840 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from false [2021-10-13 07:27:54,900 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from true [2021-10-13 07:27:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:54,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:05,557 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-10-13 07:28:07,636 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-13 07:28:22,517 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-10-13 07:28:24,594 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-10-13 07:29:09,170 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from false [2021-10-13 07:29:11,248 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from true [2021-10-13 07:29:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:11,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:11,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26702880] [2021-10-13 07:29:11,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26702880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:11,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:11,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-13 07:29:11,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229419131] [2021-10-13 07:29:11,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:29:11,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:29:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-10-13 07:29:11,254 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:13,350 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 07:29:15,425 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 07:29:17,501 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-13 07:29:19,592 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 07:29:21,669 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-10-13 07:29:23,760 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-13 07:29:25,830 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 07:29:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:25,842 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-13 07:29:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:29:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:29:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:25,843 INFO L225 Difference]: With dead ends: 7 [2021-10-13 07:29:25,843 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:29:25,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33470.6ms TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-10-13 07:29:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:29:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:29:25,845 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) [2021-10-13 07:29:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:29:25,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-13 07:29:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:25,846 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:29:25,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:29:25,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:29:25,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:29:25,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:26,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:26,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:29:26,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:29:26,081 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:29:26,082 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:29:26,082 INFO L860 garLoopResultBuilder]: At program point L31(lines 18 32) the Hoare annotation is: true [2021-10-13 07:29:26,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:29:26,082 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-13 07:29:26,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:29:26,083 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-10-13 07:29:26,083 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 29) no Hoare annotation was computed. [2021-10-13 07:29:26,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-10-13 07:29:26,083 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-13 07:29:26,084 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-13 07:29:26,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:29:26,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:29:26 BoogieIcfgContainer [2021-10-13 07:29:26,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:29:26,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:29:26,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:29:26,093 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:29:26,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:44" (3/4) ... [2021-10-13 07:29:26,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:29:26,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:29:26,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:29:26,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:29:26,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:29:26,142 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:29:26,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:29:26,153 INFO L168 Benchmark]: Toolchain (without parser) took 224289.69 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.9 MB in the beginning and 45.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,153 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:29:26,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.04 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.6 MB in the beginning and 63.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.36 ms. Allocated memory is still 79.7 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,155 INFO L168 Benchmark]: Boogie Preprocessor took 64.50 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 60.7 MB in the end (delta: 910.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:29:26,156 INFO L168 Benchmark]: RCFGBuilder took 2472.83 ms. Allocated memory is still 79.7 MB. Free memory was 60.4 MB in the beginning and 51.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,157 INFO L168 Benchmark]: TraceAbstraction took 221328.56 ms. Allocated memory is still 79.7 MB. Free memory was 51.1 MB in the beginning and 47.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,157 INFO L168 Benchmark]: Witness Printer took 49.91 ms. Allocated memory is still 79.7 MB. Free memory was 47.8 MB in the beginning and 45.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:26,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.04 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.6 MB in the beginning and 63.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.36 ms. Allocated memory is still 79.7 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.50 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 60.7 MB in the end (delta: 910.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2472.83 ms. Allocated memory is still 79.7 MB. Free memory was 60.4 MB in the beginning and 51.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 221328.56 ms. Allocated memory is still 79.7 MB. Free memory was 51.1 MB in the beginning and 47.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Witness Printer took 49.91 ms. Allocated memory is still 79.7 MB. Free memory was 47.8 MB in the beginning and 45.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 221261.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.0ms, AutomataDifference: 14646.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.4ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33470.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 25.1ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 61832.0ms SatisfiabilityAnalysisTime, 144137.9ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 3 QuantifiedInterpolants, 616 SizeOfPredicates, 6 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:29:26,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5f566-e516-4381-b3cf-4280d5c63239/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...