./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI --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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................................... 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_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI --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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:19,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:19,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:19,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:19,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:19,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:19,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:19,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:19,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:19,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:19,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:19,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:19,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:19,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:19,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:19,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:19,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:19,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:19,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:20,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:20,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:20,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:20,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:20,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:20,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:20,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:20,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:20,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:20,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:20,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:20,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:20,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:20,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:20,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:20,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:20,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:20,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:20,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:20,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:20,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:20,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:20,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:20,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:20,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:20,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:20,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:20,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:20,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:20,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:20,101 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:20,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:20,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:20,110 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:20,111 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:20,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:20,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:20,111 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:20,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:20,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:20,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:20,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:20,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:20,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:20,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:20,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:20,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:20,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:20,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:20,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:20,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:20,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:20,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:20,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:20,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:20,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:20,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:20,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:20,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:20,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:20,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:20,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:20,122 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_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2021-10-11 02:24:20,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:20,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:20,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:20,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:20,465 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:20,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-11 02:24:20,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/44d1b007a/7431c350ec2f4f8e9c1bc82d7d272558/FLAG5896fa457 [2021-10-11 02:24:21,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:21,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-11 02:24:21,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/44d1b007a/7431c350ec2f4f8e9c1bc82d7d272558/FLAG5896fa457 [2021-10-11 02:24:21,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/44d1b007a/7431c350ec2f4f8e9c1bc82d7d272558 [2021-10-11 02:24:21,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:21,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:21,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:21,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:21,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:21,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772ba4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21, skipping insertion in model container [2021-10-11 02:24:21,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:21,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:21,653 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-11 02:24:21,670 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-11 02:24:21,676 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-11 02:24:21,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:21,687 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:21,712 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-11 02:24:21,716 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-11 02:24:21,720 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-11 02:24:21,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:21,736 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:21,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21 WrapperNode [2021-10-11 02:24:21,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:21,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:21,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:21,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:21,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:21,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:21,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:21,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:21,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... [2021-10-11 02:24:21,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:21,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:21,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:21,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:21,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:22,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:22,129 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:24:22,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:22 BoogieIcfgContainer [2021-10-11 02:24:22,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:22,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:22,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:22,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:22,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:21" (1/3) ... [2021-10-11 02:24:22,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c2402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:22, skipping insertion in model container [2021-10-11 02:24:22,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:21" (2/3) ... [2021-10-11 02:24:22,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c2402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:22, skipping insertion in model container [2021-10-11 02:24:22,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:22" (3/3) ... [2021-10-11 02:24:22,141 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-11 02:24:22,156 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:22,160 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:24:22,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:24:22,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:22,211 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:22,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:22,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:22,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:22,211 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:22,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:22,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 02:24:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:24:22,230 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:22,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:24:22,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash 60704, now seen corresponding path program 1 times [2021-10-11 02:24:22,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:22,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714114496] [2021-10-11 02:24:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:22,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:22,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:22,496 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:22,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:22,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:22,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:22 BoogieIcfgContainer [2021-10-11 02:24:22,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:22,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:22,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:22,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:22,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:22" (3/4) ... [2021-10-11 02:24:22,532 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:24:22,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:22,537 INFO L168 Benchmark]: Toolchain (without parser) took 1115.29 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 91.6 MB in the end (delta: -36.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:22,539 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 71.3 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:22,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.82 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 69.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:22,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:22,544 INFO L168 Benchmark]: Boogie Preprocessor took 29.93 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 67.4 MB in the end (delta: 937.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:22,545 INFO L168 Benchmark]: RCFGBuilder took 321.83 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 54.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:22,546 INFO L168 Benchmark]: TraceAbstraction took 388.51 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 54.4 MB in the beginning and 92.3 MB in the end (delta: -37.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:22,549 INFO L168 Benchmark]: Witness Printer took 6.32 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 91.6 MB in the end (delta: 722.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:22,558 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 96.5 MB. Free memory was 71.4 MB in the beginning and 71.3 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.82 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 69.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.93 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 67.4 MB in the end (delta: 937.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.83 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 54.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 388.51 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 54.4 MB in the beginning and 92.3 MB in the end (delta: -37.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.32 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 91.6 MB in the end (delta: 722.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: 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 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:25,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:25,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:25,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:25,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:25,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:25,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:25,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:25,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:25,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:25,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:25,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:25,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:25,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:25,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:25,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:25,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:25,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:25,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:25,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:25,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:25,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:25,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:25,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:25,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:25,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:25,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:25,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:25,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:25,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:25,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:25,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:25,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:25,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:25,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:25,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:25,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:25,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:25,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:25,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:25,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:25,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:24:25,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:25,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:25,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:25,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:25,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:25,576 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:25,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:25,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:25,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:25,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:25,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:25,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:25,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:25,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:25,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:25,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:25,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:25,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:24:25,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:24:25,581 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:25,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:25,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:25,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:25,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:25,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:24:25,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:25,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:25,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:25,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:25,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:25,584 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:24:25,584 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:24:25,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:25,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:25,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:25,586 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_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2021-10-11 02:24:26,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:26,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:26,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:26,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:26,061 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:26,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-11 02:24:26,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/da5b3bf49/277bf2520ba3435085ca53057dcd8358/FLAGbbb2c6442 [2021-10-11 02:24:26,864 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:26,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-11 02:24:26,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/da5b3bf49/277bf2520ba3435085ca53057dcd8358/FLAGbbb2c6442 [2021-10-11 02:24:27,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/data/da5b3bf49/277bf2520ba3435085ca53057dcd8358 [2021-10-11 02:24:27,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:27,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:27,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:27,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:27,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:27,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b605de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27, skipping insertion in model container [2021-10-11 02:24:27,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:27,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:27,418 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-11 02:24:27,430 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-11 02:24:27,438 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-11 02:24:27,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:27,458 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:27,478 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-11 02:24:27,483 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-11 02:24:27,487 WARN L226 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_73555a94-5318-430d-8a71-31b4ab5a2e65/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-11 02:24:27,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:27,507 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:27,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27 WrapperNode [2021-10-11 02:24:27,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:27,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:27,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:27,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:27,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:27,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:27,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:27,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:27,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... [2021-10-11 02:24:27,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:27,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:27,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:27,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:27,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:24:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:29,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:29,432 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:24:29,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29 BoogieIcfgContainer [2021-10-11 02:24:29,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:29,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:29,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:29,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:29,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:27" (1/3) ... [2021-10-11 02:24:29,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662abca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:29, skipping insertion in model container [2021-10-11 02:24:29,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:27" (2/3) ... [2021-10-11 02:24:29,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662abca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:29, skipping insertion in model container [2021-10-11 02:24:29,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29" (3/3) ... [2021-10-11 02:24:29,454 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-11 02:24:29,477 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:29,481 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:24:29,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:24:29,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:29,564 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:29,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:29,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:29,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:29,565 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:29,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:29,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:24:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:24:29,600 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:29,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:24:29,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-11 02:24:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322485605] [2021-10-11 02:24:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:29,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:24:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:29,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:29,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322485605] [2021-10-11 02:24:29,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:29,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:29,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077186412] [2021-10-11 02:24:29,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:29,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:29,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:29,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:29,922 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-10-11 02:24:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:30,640 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-11 02:24:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:30,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:24:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:30,653 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:24:30,653 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:24:30,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:24:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:24:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:24:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-11 02:24:30,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-10-11 02:24:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:30,693 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-11 02:24:30,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-11 02:24:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:24:30,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:30,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:24:30,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:24:30,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-11 02:24:30,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:30,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243313199] [2021-10-11 02:24:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:31,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:24:31,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:31,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:31,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243313199] [2021-10-11 02:24:31,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:31,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:31,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265233745] [2021-10-11 02:24:31,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:31,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:31,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:31,380 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2021-10-11 02:24:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:31,949 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-11 02:24:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:31,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:24:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:31,957 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:24:31,957 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:24:31,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:24:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:24:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:24:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 02:24:31,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-11 02:24:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:31,961 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 02:24:31,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 02:24:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:31,962 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:31,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:32,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:24:32,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-11 02:24:32,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:32,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866704442] [2021-10-11 02:24:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:32,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:24:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:32,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:32,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866704442] [2021-10-11 02:24:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:32,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686719013] [2021-10-11 02:24:32,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:32,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:32,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:32,643 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 4 states. [2021-10-11 02:24:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:33,096 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-11 02:24:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:33,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:33,104 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:24:33,104 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:33,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:33,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-11 02:24:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:33,106 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:33,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:33,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:33,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:24:33,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:33,322 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2021-10-11 02:24:33,323 INFO L262 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-10-11 02:24:33,324 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-11 02:24:33,325 INFO L262 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-10-11 02:24:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:33 BoogieIcfgContainer [2021-10-11 02:24:33,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:33,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:33,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:33,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:33,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:29" (3/4) ... [2021-10-11 02:24:33,350 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:33,363 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:24:33,363 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:33,363 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:33,363 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:33,413 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73555a94-5318-430d-8a71-31b4ab5a2e65/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:33,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:33,422 INFO L168 Benchmark]: Toolchain (without parser) took 6202.67 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 40.7 MB in the beginning and 37.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,423 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:33,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.72 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 28.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.83 ms. Allocated memory is still 60.8 MB. Free memory was 28.3 MB in the beginning and 44.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,425 INFO L168 Benchmark]: Boogie Preprocessor took 59.11 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:33,426 INFO L168 Benchmark]: RCFGBuilder took 1772.85 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 31.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,427 INFO L168 Benchmark]: TraceAbstraction took 3893.49 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.0 MB in the beginning and 39.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,427 INFO L168 Benchmark]: Witness Printer took 87.41 ms. Allocated memory is still 75.5 MB. Free memory was 39.6 MB in the beginning and 37.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:33,431 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 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.72 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 28.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.83 ms. Allocated memory is still 60.8 MB. Free memory was 28.3 MB in the beginning and 44.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.11 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1772.85 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 31.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3893.49 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.0 MB in the beginning and 39.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Witness Printer took 87.41 ms. Allocated memory is still 75.5 MB. Free memory was 39.6 MB in the beginning and 37.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 29 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...