./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG --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 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a ............................................................................................................................................................................................................................................................. 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG --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 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:37:28,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:37:28,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:37:28,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:37:28,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:37:28,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:37:28,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:37:28,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:37:28,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:37:28,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:37:28,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:37:28,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:37:28,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:37:28,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:37:28,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:37:28,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:37:28,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:37:28,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:37:28,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:37:28,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:37:28,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:37:28,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:37:28,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:37:28,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:37:28,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:37:28,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:37:28,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:37:28,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:37:28,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:37:28,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:37:28,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:37:28,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:37:28,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:37:28,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:37:28,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:37:28,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:37:28,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:37:28,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:37:28,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:37:28,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:37:28,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:37:28,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:37:29,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:37:29,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:37:29,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:37:29,011 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:37:29,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:37:29,011 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:37:29,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:37:29,012 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:37:29,012 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:37:29,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:37:29,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:37:29,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:37:29,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:37:29,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:37:29,014 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:37:29,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:37:29,015 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:37:29,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:37:29,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:37:29,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:37:29,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:37:29,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:37:29,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:37:29,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:37:29,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:37:29,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:37:29,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:37:29,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:37:29,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:37:29,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:37:29,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:29,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:37:29,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:37:29,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:37:29,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:37:29,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:37:29,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:37:29,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:37:29,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:37:29,022 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2021-10-29 04:37:29,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:37:29,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:37:29,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:37:29,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:37:29,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:37:29,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-10-29 04:37:29,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/58057e1be/ea9ba5bf7b184584afc48f928f656878/FLAGd43dc1e04 [2021-10-29 04:37:29,983 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:37:29,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-10-29 04:37:29,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/58057e1be/ea9ba5bf7b184584afc48f928f656878/FLAGd43dc1e04 [2021-10-29 04:37:30,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/58057e1be/ea9ba5bf7b184584afc48f928f656878 [2021-10-29 04:37:30,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:37:30,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:37:30,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:30,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:37:30,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:37:30,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b5f27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30, skipping insertion in model container [2021-10-29 04:37:30,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:37:30,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:37:30,634 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-10-29 04:37:30,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:30,666 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:37:30,681 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-10-29 04:37:30,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:30,708 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:37:30,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30 WrapperNode [2021-10-29 04:37:30,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:30,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:30,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:37:30,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:37:30,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:30,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:37:30,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:37:30,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:37:30,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:37:30,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:37:30,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:37:30,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:37:30,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (1/1) ... [2021-10-29 04:37:30,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:30,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:37:30,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:37:30,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:37:30,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:37:30,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:37:30,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:37:31,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:37:31,132 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 04:37:31,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:31 BoogieIcfgContainer [2021-10-29 04:37:31,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:37:31,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:37:31,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:37:31,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:37:31,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:37:30" (1/3) ... [2021-10-29 04:37:31,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4a4e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:31, skipping insertion in model container [2021-10-29 04:37:31,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:30" (2/3) ... [2021-10-29 04:37:31,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4a4e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:31, skipping insertion in model container [2021-10-29 04:37:31,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:31" (3/3) ... [2021-10-29 04:37:31,158 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2021-10-29 04:37:31,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:37:31,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:37:31,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:37:31,215 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:37:31,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 04:37:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-10-29 04:37:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:37:31,248 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:31,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:37:31,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 71331668, now seen corresponding path program 1 times [2021-10-29 04:37:31,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:37:31,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812649130] [2021-10-29 04:37:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:31,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:37:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:37:31,392 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:37:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:37:31,444 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:37:31,446 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:37:31,447 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:37:31,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:37:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:37:31,453 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 04:37:31,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:37:31,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:37:31 BoogieIcfgContainer [2021-10-29 04:37:31,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:37:31,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:37:31,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:37:31,481 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:37:31,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:31" (3/4) ... [2021-10-29 04:37:31,485 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:37:31,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:37:31,487 INFO L168 Benchmark]: Toolchain (without parser) took 1117.53 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 57.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:37:31,488 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 84.5 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:37:31,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.12 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 84.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:37:31,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.38 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:37:31,490 INFO L168 Benchmark]: Boogie Preprocessor took 31.39 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 82.3 MB in the end (delta: 634.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:37:31,491 INFO L168 Benchmark]: RCFGBuilder took 368.56 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 71.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:37:31,492 INFO L168 Benchmark]: TraceAbstraction took 328.79 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 58.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:37:31,492 INFO L168 Benchmark]: Witness Printer took 4.69 ms. Allocated memory is still 109.1 MB. Free memory was 58.2 MB in the beginning and 57.7 MB in the end (delta: 487.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:37:31,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 84.5 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.12 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 84.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.38 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.39 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 82.3 MB in the end (delta: 634.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 368.56 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 71.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 328.79 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 58.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.69 ms. Allocated memory is still 109.1 MB. Free memory was 58.2 MB in the beginning and 57.7 MB in the end (delta: 487.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<50 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2021-10-29 04:37:31,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:37:34,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:37:34,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:37:34,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:37:34,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:37:34,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:37:34,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:37:34,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:37:34,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:37:34,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:37:34,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:37:34,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:37:34,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:37:34,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:37:34,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:37:34,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:37:34,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:37:34,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:37:34,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:37:34,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:37:34,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:37:34,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:37:34,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:37:34,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:37:34,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:37:34,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:37:34,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:37:34,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:37:34,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:37:34,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:37:34,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:37:34,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:37:34,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:37:34,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:37:34,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:37:34,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:37:34,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:37:34,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:37:34,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:37:34,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:37:34,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:37:34,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:37:34,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:37:34,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:37:34,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:37:34,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:37:34,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:37:34,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:37:34,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:37:34,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:37:34,264 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:37:34,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:37:34,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:37:34,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:37:34,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:37:34,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:37:34,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:37:34,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:37:34,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:37:34,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:37:34,269 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:37:34,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:37:34,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:37:34,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:37:34,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:37:34,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:37:34,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:37:34,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:37:34,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:34,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:37:34,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:37:34,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:37:34,271 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:37:34,272 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:37:34,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:37:34,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:37:34,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:37:34,273 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2021-10-29 04:37:34,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:37:34,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:37:34,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:37:34,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:37:34,667 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:37:34,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-10-29 04:37:34,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/e7fc07b7e/041ade1054414f1793c136171b7fd268/FLAG46909f6db [2021-10-29 04:37:35,368 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:37:35,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-10-29 04:37:35,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/e7fc07b7e/041ade1054414f1793c136171b7fd268/FLAG46909f6db [2021-10-29 04:37:35,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/data/e7fc07b7e/041ade1054414f1793c136171b7fd268 [2021-10-29 04:37:35,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:37:35,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:37:35,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:35,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:37:35,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:37:35,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:35" (1/1) ... [2021-10-29 04:37:35,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191c4092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:35, skipping insertion in model container [2021-10-29 04:37:35,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:35" (1/1) ... [2021-10-29 04:37:35,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:37:35,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:37:35,948 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-10-29 04:37:35,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:36,007 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:37:36,037 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_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-10-29 04:37:36,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:36,083 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:37:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36 WrapperNode [2021-10-29 04:37:36,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:36,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:36,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:37:36,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:37:36,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:36,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:37:36,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:37:36,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:37:36,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:37:36,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:37:36,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:37:36,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:37:36,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (1/1) ... [2021-10-29 04:37:36,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:36,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:36,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:37:36,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:37:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:37:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:37:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:37:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:37:42,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:37:42,302 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 04:37:42,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:42 BoogieIcfgContainer [2021-10-29 04:37:42,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:37:42,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:37:42,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:37:42,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:37:42,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:37:35" (1/3) ... [2021-10-29 04:37:42,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3bd695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:42, skipping insertion in model container [2021-10-29 04:37:42,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:36" (2/3) ... [2021-10-29 04:37:42,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3bd695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:42, skipping insertion in model container [2021-10-29 04:37:42,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:42" (3/3) ... [2021-10-29 04:37:42,313 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2021-10-29 04:37:42,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:37:42,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:37:42,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:37:42,387 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:37:42,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 04:37:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-10-29 04:37:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:37:42,408 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:42,409 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:37:42,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-29 04:37:42,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:37:42,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321366139] [2021-10-29 04:37:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:42,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:37:42,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:37:42,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:37:42,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:37:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:37:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:37:45,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:38:04,551 WARN L838 $PredicateComparison]: unable to prove that (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 04:38:12,776 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-10-29 04:38:14,810 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-10-29 04:38:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:38:14,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:38:21,165 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-29 04:38:23,220 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-29 04:38:33,516 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-10-29 04:38:35,562 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-10-29 04:38:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:38:35,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:38:35,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321366139] [2021-10-29 04:38:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321366139] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:35,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:35,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-29 04:38:35,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700767330] [2021-10-29 04:38:35,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 04:38:35,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:38:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 04:38:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-10-29 04:38:35,604 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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) [2021-10-29 04:38:38,679 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 04:38:40,743 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 04:38:42,787 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 04:38:44,840 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 04:38:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:53,979 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-10-29 04:38:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:38:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 [2021-10-29 04:38:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:53,990 INFO L225 Difference]: With dead ends: 34 [2021-10-29 04:38:53,990 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 04:38:53,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=23, Invalid=20, Unknown=11, NotChecked=78, Total=132 [2021-10-29 04:38:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 04:38:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-29 04:38:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-10-29 04:38:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-29 04:38:54,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-29 04:38:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:54,022 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-29 04:38:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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) [2021-10-29 04:38:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-29 04:38:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:38:54,023 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:54,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:54,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:38:54,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:38:54,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:38:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-29 04:38:54,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:38:54,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661333942] [2021-10-29 04:38:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:54,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:38:54,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:38:54,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:38:54,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:38:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:54,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:38:54,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:38:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:38:54,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:38:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:38:54,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:38:54,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661333942] [2021-10-29 04:38:54,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661333942] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:54,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:54,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-29 04:38:54,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218208338] [2021-10-29 04:38:54,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:38:54,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:38:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:38:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:38:54,861 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:58,603 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 04:38:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:38:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:38:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:58,605 INFO L225 Difference]: With dead ends: 19 [2021-10-29 04:38:58,605 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 04:38:58,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 04:38:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 04:38:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-29 04:38:58,610 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-29 04:38:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:58,611 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-29 04:38:58,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-29 04:38:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:38:58,611 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:58,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:58,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:38:58,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:38:58,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:38:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-29 04:38:58,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:38:58,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537478901] [2021-10-29 04:38:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:58,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:38:58,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:38:58,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:38:58,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:38:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:59,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:38:59,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:39:17,992 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from false [2021-10-29 04:39:20,058 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from true [2021-10-29 04:39:26,263 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-29 04:39:28,324 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-29 04:39:40,736 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 04:39:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:39:40,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:39:59,428 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from false [2021-10-29 04:40:01,490 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from true [2021-10-29 04:40:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:40:01,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:40:01,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537478901] [2021-10-29 04:40:01,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537478901] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:01,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:40:01,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 04:40:01,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075617797] [2021-10-29 04:40:01,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:40:01,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:40:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:40:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-10-29 04:40:01,518 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-29 04:40:05,783 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from false [2021-10-29 04:40:07,846 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from true [2021-10-29 04:40:09,908 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 04:40:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:12,114 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-29 04:40:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:40:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 9 [2021-10-29 04:40:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:12,115 INFO L225 Difference]: With dead ends: 19 [2021-10-29 04:40:12,116 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 04:40:12,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-10-29 04:40:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 04:40:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 04:40:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:40:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 04:40:12,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-29 04:40:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:12,120 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 04:40:12,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-29 04:40:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 04:40:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:40:12,121 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:40:12,121 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 04:40:12,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-29 04:40:12,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:40:12,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:40:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:40:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-29 04:40:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:40:12,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13658270] [2021-10-29 04:40:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:12,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:40:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:40:12,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:40:12,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:40:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:40:26,640 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:40:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:40:33,157 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:40:33,158 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:40:33,159 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:40:33,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:40:33,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:40:33,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:40:33,364 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 04:40:33,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:40:33,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:40:33 BoogieIcfgContainer [2021-10-29 04:40:33,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:40:33,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:40:33,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:40:33,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:40:33,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:42" (3/4) ... [2021-10-29 04:40:33,392 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:40:33,433 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:40:33,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:40:33,439 INFO L168 Benchmark]: Toolchain (without parser) took 177682.20 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.0 MB in the beginning and 33.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,440 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:40:33,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 41.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,452 INFO L168 Benchmark]: Boogie Preprocessor took 57.19 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 39.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:40:33,452 INFO L168 Benchmark]: RCFGBuilder took 6104.41 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,453 INFO L168 Benchmark]: TraceAbstraction took 171083.72 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.7 MB in the beginning and 35.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,455 INFO L168 Benchmark]: Witness Printer took 43.50 ms. Allocated memory is still 71.3 MB. Free memory was 35.4 MB in the beginning and 33.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:33,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 41.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.19 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 39.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6104.41 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 171083.72 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.7 MB in the beginning and 35.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Witness Printer took 43.50 ms. Allocated memory is still 71.3 MB. Free memory was 35.4 MB in the beginning and 33.3 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<50 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<50 [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 170.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 8 SDslu, 64 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 18.2s SatisfiabilityAnalysisTime, 112.3s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 440 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:40:33,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8eb8ab3-0d25-46d4-9f88-aab34d6bbbbf/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...